Running in hot weather in the UK used to be a two-week-a-year problem. Not this summer. Britain has just come through its third heatwave of 2026, and the Met Office has now logged a record eight days above 34°C — beating both 1976 and 2020. For the first time in the record books, 35°C has been recorded in May, June and July of the same year. UKHSA heat health alerts have covered large parts of England for days at a time.
So here's the honest question for anyone who runs: do you just stop until September? No. You adjust. Here's how UK runners — and the clubs they run with — are actually getting through it.
Move the Run, Don't Cancel It
Timing is the single biggest lever you have, and it's free. Tarmac holds heat long after the sun has gone, so the worst window is roughly 11am to 5pm, and the best is early — genuinely early. A 6:30am run in a heatwave can be fifteen degrees cooler than the same route at 3pm, and it's the one time of day the pavement hasn't been baking for hours.
If mornings aren't yours, go late — after 8pm, once the sun is off the streets. And change where you run, not just when:
- Chase shade. Park loops, canal towpaths and tree-lined streets over open roads and exposed seafronts.
- Run near water. Fountains, taps, a café you can duck into. Plan the refill in, don't hope for one.
- Shorten the loop. Three laps of a two-mile circuit near your car or your front door beats one big out-and-back you have to finish.
This is exactly what most clubs are already doing — quietly shifting the Tuesday run an hour earlier, swapping the road session for a shaded park loop. The run isn't cancelled. It's moved.
Let Go of the Pace
Here's the bit that catches people out: in real heat, your body is doing two jobs at once. It's powering you forward and pushing blood to your skin to cool you down. Same effort, higher heart rate, slower pace. That's physiology, not weakness — and fighting it is how a nice evening run turns into a bad one.
So run by effort, not by the number on your watch. If you can't hold a conversation, you're going too hard for the conditions, whatever your splits say. Drop the tempo session. Take the walk break. Nobody has ever regretted the easy version of a 30°C run.
If that sounds like an argument for running with other people, it is. The social pace group — the one that exists to chat rather than chase — is the perfect heatwave run, and most clubs already have one.
Know When to Stop
This is the part worth taking seriously, because heat illness doesn't announce itself politely. Stop, get in the shade, and drink if you notice any of these:
- Goosebumps or chills while you're hot
- You've stopped sweating
- Dizziness, a thumping headache, or nausea
- Confusion, or a sudden loss of coordination
That last pair is a medical emergency, not a "walk it off" moment. And when UKHSA has an amber alert up and you're genuinely unsure — take the rest day. It costs you nothing. There is no run in July that's worth a hospital trip, and the fittest people you know are the ones who are still running in September.
Why the Heat Is Easier With a Club
Nobody skips a hot run because they're lazy. They skip it because they're on their own, it's 29°C, and there's no one to notice either way.
That's the whole case for running with people, and it gets stronger in a heatwave, not weaker. Someone notices if you've gone quiet. Someone knows the route with the shade and the working water fountain. Someone brought the spare bottle. And someone is expecting you at 6:30am, which is the only reason any of us have ever got out of bed at 6:30am.
The catch is the admin. When a club moves its run because of the heat — earlier start, new meeting point, park instead of road — that change goes out on WhatsApp and is buried under forty messages by teatime. Half the group turns up at the old time. Half doesn't turn up at all.
That's the bit RunClub fixes. Find a club near you, see exactly when and where the next run actually sets off — heat change and all — and tap to say you're coming, so the club knows who to expect and you know you're in the right place at the right hour.
The Summer Isn't Cancelled
Record heat is genuinely changing how Britain runs, and pretending otherwise is how people get hurt. But the answer was never to stop. Run earlier. Find the shade. Slow right down. Carry more water than you think you need. And do it with people who'll notice how you're going.
Find a club near you and see when their next run sets off at run-club.app — because the run that actually happens is the one you turn up to.
