Top tips for training and racing in the heat

Top tips for training and racing in the heat

By Lia Stubbings. Marketing at ZONE3 

Runner, swimmer, cyclist, triathlete and recently turned ultrarunner! 

Last weekend I took on my first ultramarathon which just so happened to fall on the hottest day of the year so far. Running 50km in 30-degrees definitely wasn’t easy, but there were things I kept doing to keep the heat at bay. If you’re training this weekend or taking part in a race, take these little tips and tricks with you 

Time of day is important! 

This one is pretty self-explanatory but get up and out before the midday sun or wait until late evening if you can when it’s much cooler. Of course, this isn’t possible if you’re taking part in an event that starts at a certain time, but if you’re heading out for a training run, try to stick to cooler parts of the day.  

Chase the shade  

Trails are often a lot cooler to run on than roads, so if you can, find a nice shady route to keep you covered from the heat of the sun.  

Keep covered to keep cool 

This one sounds counter intuitive but covering up to keep cool really helps. I wore a lightweight technical t-shirt for my ultra which stopped me from getting burnt on my shoulders and chest. I also made sure to wear a breathable cap throughout the day, not a visor! I knew I was going to be exposed to the sun all day and I really didn’t want to end up with a burnt head.

SPF!

I will hammer home to anyone who will listen about how important SPF is. We should be wearing SPF 50 on our faces all year round, not just in the summer months. If you’re heading out this weekend, make sure to apply a factor 50 sun cream before you go out. There are a lot of sports ones on the market that are sweat and water resistant. Make sure you apply it to your face, the back of your neck, the tops of your ears and any exposed areas. The last thing you want is to come back from your run or race with a sunburn. As I was in the sun for several hours, I kept reapplying it throughout the day too.  

Hydration is key  

Whether you’re heading out for a 5km shakeout or 50km ultra, take water and electrolytes with you. If you have an event on Sunday, start adding electrolytes to your water a couple of days in advance to help your body stay hydrated. Drink plenty of water in the days leading up to your event and especially the day before.  

Salt tablets  

Salt tablets were my best friend at the ultra! I was struggling about halfway through from nausea due to the heat and a fellow runner offered me some of her salt tablets and it perked me right up. I continued to take them throughout the remaining 25km to keep me going. I would advise carrying these with you and taking them throughout your run/race, especially if it’s a long session. I had the Salt Stick Fast Chews in Lemon & Lime flavour. If you’re new to salt tablets like I was, don’t be put off by their name! The ones I had were not salty at all, they just work to maintain your electrolyte levels, reduce heat stress, and boost stamina.  

Dunk your hat and get a cool towel!  

At every water station and checkpoint, they had hat dunking buckets. If you’re able to, dunk your hat in cold water and put it straight onto your head, it works a treat! I also did this with a buff I kept around my wrist. My secret life saving device was my cool towel. I got it from Amazon and it’s a game changer for running in the heat. You wet it, wring, shake it out and it stays ice cold. I kept it around my neck (and it actually made its way onto my head under my hat for a bit too when I got really warm).  

Don’t be a hero  

If you need to slow down or walk to get your heart rate down, do! This sort of weather is not the time to be going for PB’s. Slow down if you need to, take on plenty of fluids, stick to the shade and cooler times of the day and if you feel it’s too hot to go out, don’t go. One or two missed training sessions isn’t going to be the be all and end all of your training!  

I hope these little tips help you on your next training session or race in the heat. If you try any, let us know how you got on and tag us on social media @ZONE3Official .  

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zone3official
18/06/25
What a weekend up at Windermere 💦⛰️ The Great North Swim brought big energy, beautiful scenery, and plenty of Zone3 kit in the water. We had an awesome crew of ambassadors taking on the 5km swim, shoutout to @livs_is_livs who did it in skins 👏 and to @chloedooley who showed up and gave it everything. And a massive congrats to Zone3 Pro @j0m3sf1 for taking the win in the SwimRun - absolutely flying out there, despite the weather warnings! Open water season is officially on, and we’re buzzing to be part of it. @great_swim
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zone3official
18/06/25
What a weekend up at Windermere 💦⛰️ The Great North Swim brought big energy, beautiful scenery, and plenty of Zone3 kit in the water. We had an awesome crew of ambassadors taking on the 5km swim, shoutout to @livs_is_livs who did it in skins 👏 and to @chloedooley who showed up and gave it everything. And a massive congrats to Zone3 Pro @j0m3sf1 for taking the win in the SwimRun - absolutely flying out there, despite the weather warnings! Open water season is officially on, and we’re buzzing to be part of it. @great_swim
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zone3official
18/06/25
What a weekend up at Windermere 💦⛰️ The Great North Swim brought big energy, beautiful scenery, and plenty of Zone3 kit in the water. We had an awesome crew of ambassadors taking on the 5km swim, shoutout to @livs_is_livs who did it in skins 👏 and to @chloedooley who showed up and gave it everything. And a massive congrats to Zone3 Pro @j0m3sf1 for taking the win in the SwimRun - absolutely flying out there, despite the weather warnings! Open water season is officially on, and we’re buzzing to be part of it. @great_swim
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zone3official
15/06/25
What a weekend at the Great North Swim in Windermere! As proud swim sponsors, we loved being part of the action. Even with the odd downpour, spirits stayed high and the atmosphere was electric - a true celebration of community, determination, and open water adventure.
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zone3official
10/06/25
This weekend, the Zone3 team also volunteered at the incredible 24-Hour Swim Relay at Shepperton @levelwateruk 🏊‍♀️ We're proud to support Level Water, a charity that gives children with disabilities the opportunity to learn to swim, offering 1-to-1 lessons that empower kids with confidence, movement, and freedom in the water. The 24 hour event brought swimmers together for a non-stop relay challenge, raising vital funds to provide these lessons across the UK. To everyone swimming, supporting, and staying awake through the night: thank you for making a difference. This is what sport is all about.
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zone3official
10/06/25
This weekend, the Zone3 team also volunteered at the incredible 24-Hour Swim Relay at Shepperton @levelwateruk 🏊‍♀️ We're proud to support Level Water, a charity that gives children with disabilities the opportunity to learn to swim, offering 1-to-1 lessons that empower kids with confidence, movement, and freedom in the water. The 24 hour event brought swimmers together for a non-stop relay challenge, raising vital funds to provide these lessons across the UK. To everyone swimming, supporting, and staying awake through the night: thank you for making a difference. This is what sport is all about.
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zone3official
10/06/25
This weekend, the Zone3 team also volunteered at the incredible 24-Hour Swim Relay at Shepperton @levelwateruk 🏊‍♀️ We're proud to support Level Water, a charity that gives children with disabilities the opportunity to learn to swim, offering 1-to-1 lessons that empower kids with confidence, movement, and freedom in the water. The 24 hour event brought swimmers together for a non-stop relay challenge, raising vital funds to provide these lessons across the UK. To everyone swimming, supporting, and staying awake through the night: thank you for making a difference. This is what sport is all about.
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon delivered everything we love about race season - historic backdrops, electric energy, and a community of athletes pushing themselves to new limits 🏁 As Official Swim Sponsor, we were proud to support one of the UK’s most iconic triathlons. The Zone3 kit was out in force, powered by the passion of our ambassador team and the dedication of every single participant! 👉 Swipe to see our fave visitor of the weekend @blenheimpalacetriathlon
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zone3official
09/06/25
Blenheim Palace Triathlon 2025 brought together athletes, ambition, and the unmistakable energy of race season. 💥 As the Official Swim Sponsor, Zone3 was proud to support the event which included the British and English Sprint Distance Championships and GB Age-Group Team Qualifier. With athletes of every level pushing their limits and our ambassadors leading from the front, it was a weekend to remember. The rain came down, but the spirit? Unshakeable. The determination? Unstoppable. The atmosphere? Electric ⚡ From first-time triathletes to GB hopefuls, every stroke, step, and smile was a reminder of why we do this. Thanks to everyone who stopped by to chat! And huge kudos to everyone who raced! @blenheimpalacetriathlon
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zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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Z
zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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Z
zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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Z
zone3official
23/05/25
Planning a staycation with open-water swims on the agenda? Don’t hit the road without these 5 holiday essentials that blend performance, comfort, and innovation, whether you're taking the plunge or soaking in the scenery. 🧭 1. Zone3 Waterproof Phone Pouch Stay safe + snap the moment. This buoyant, watertight pouch keeps your phone sealed from the elements while floating beside you for easy access:GPS, safety calls or that post-swim selfie, sorted. 🏖 2. Swim Safety Buoy Not just for visibility, our buoys offer a float to grab hold of when you need a breather in the water, plus are in-water storage for your dry kit and valuables. They're lightweight, eco-conscious, and swimmer-approved for peace of mind. 🕶 3. Waterhaul x Zone3 Sunglasses Sustainably made from ocean plastic and engineered for active wear, these polarised shades reduce glare off the water and keep you looking sharp on swim breaks. 🫖 4. Zone3 Ocean Bottle Hydration with a mission. This vacuum-insulated bottle keeps drinks cold (or hot) and supports ocean cleanup with every purchase. Perfect for post-dip teas or mid-hike refreshment. 🧥 5. Thermo-Tech Changing Robe From freezing lakes to rainy beaches, this super-insulated robe wraps you in warmth while you change. Windproof, water-resistant and cosy enough to live in between swims. 💬 Got a UK swim spot to recommend? Drop your favourite below and let the community know where you’re diving in next 👇
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zone3official
14/05/25
Are you ready for the Arla Great North Swim in June? @zone3official takes you through ‘sighting’ in open water, so you swim in the right direction and don’t zig zag your way around. Practicing sighting before the event will make sure you swim in a straight line and ensures you don’t swim further than you need to on the day. If you’re swimming in the pool, why not grab a bottle and use it as a marker at the end of your lane. Try to lift your eyes or head to look at it every few strokes. If you can practice in the open water, a landmark in the distance is a good marker to swim towards too! #openwaterswimming #zone3 #zone3official #greatnorthswim2025
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zone3official
01/05/25
Introducing the all-new Glide Wetsuit — engineered to help new triathletes and open-water swimmers feel fast, supported, and in control from their first swim to their final stroke. Whether you're stepping into open water for the first time or building confidence ahead of race day, Glide is your perfect entry point. Its performance-enhancing design combines flexibility where it counts, balanced buoyancy, and durable comfort, helping you conserve energy, swim naturally, and stay focused on your goals. Comment 'Glide' for more info sent straight to your DMs.
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zone3official
01/05/25
Introducing the all-new Glide Wetsuit — engineered to help new triathletes and open-water swimmers feel fast, supported, and in control from their first swim to their final stroke. Whether you're stepping into open water for the first time or building confidence ahead of race day, Glide is your perfect entry point. Its performance-enhancing design combines flexibility where it counts, balanced buoyancy, and durable comfort, helping you conserve energy, swim naturally, and stay focused on your goals. Comment 'Glide' for more info sent straight to your DMs.
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