Cross-training through a hot summer

Wearing headphones with both earbuds jammed in cuts you off from critical auditory cues on the trail. You need to hear the warning of an overtaking runner, the rattle of a snake, or the rush of wind before a storm. Keep one ear open or use bone-conduction headphones at a low volume. If you need to pass someone, announce your presence early and clearly with a friendly “on your left” rather than silently brushing past them.

Improving your sleep does not require expensive gadgets or complicated routines. Consistency is the primary lever: going to bed and waking up at the same time every day stabilizes your circadian rhythm. Keeping the bedroom below sixty-eight degrees Fahrenheit mimics the natural drop in core body temperature that signals the brain to rest. If you struggle to wind down, try turning off all screens one hour before bed to allow natural melatonin production to rise.

We collected the heat-specific advice in our notes on hot days.

Your pace will drop, and accepting this shift is the first step toward a successful mountain run. At high altitude, the atmospheric pressure is lower, meaning there are fewer oxygen molecules in each lungful of air, which causes your heart rate to spike on even modest inclines. “You have to swallow your pride,” says an experienced mountain runner from Colorado who regularly trains at 10,000 feet. If you try to maintain your sea-level paces, you will redline your cardiovascular system within the first mile — leaving you struggling for breath and energy for the rest of the day.