How to train in the heat

How to Train in the Heat

There's no getting around it: training in hot weather is genuinely challenging. Whether you're preparing for a summer race or simply dealing with Britain's occasional scorching spell, learning how to train effectively in the heat can make an enormous difference to both your performance and your wellbeing.

The good news is that heat adaptation is absolutely possible. Your body becomes more efficient at thermoregulation and cooling itself through sweat production when you consistently expose it to warmer conditions. This doesn't happen overnight, but with the right approach, you can become a far more capable summer runner within just two to three weeks.

Start by easing into it gradually. If you're not used to hot conditions, don't suddenly push your usual paces on the first warm day. Instead, reduce your intensity slightly and focus on building tolerance over time. This measured approach helps your body adapt without overwhelming your cardiovascular system. Many runners find that their early morning sessions offer the perfect opportunity to maintain quality work before temperatures peak, whilst afternoon runs can become easier, slower efforts focused purely on heat acclimatisation.

Hydration is absolutely fundamental. Begin your session well hydrated, and if you're running for longer than sixty minutes, plan to drink fluids during your workout. Water is usually sufficient for runs under ninety minutes, but for anything longer, consider a sports drink containing carbohydrates and electrolytes. The trick is finding what your stomach tolerates whilst moving, which requires genuine experimentation during training rather than on race day.

Clothing choices matter far more than many runners realise. Lightweight, breathable fabrics that wick moisture away from your skin will keep you significantly cooler than cotton. Light colours reflect heat better than dark ones, so save your black kit for winter runs. Don't overdress simply because you're heading outside. Many runners wear far too much in warm conditions out of habit.

Understanding the physiological stress of heat training is important too. Your heart rate will naturally be higher during warm weather efforts, so don't be alarmed if your watch shows elevated numbers. Your perceived effort might feel harder because your body is working to cool itself alongside maintaining your pace. This is completely normal and nothing to worry about.

If you're training seriously for a significant event, consider that British Athletics and most sports scientists recommend undertaking heat training approximately two weeks before competition. This window allows your body to develop the necessary adaptations whilst remaining fresh for race day.

For personalised guidance on heat training strategies tailored to your specific goals and circumstances, our running coaching services can provide expert support. Alternatively, if you'd like to discuss your training approach or explore how we might help, please get in touch with the team today.