Splits & Seams

Guides

Racing in heat & humidity: a gear list

Hot, humid racing is a big part of the reason this site exists. This page lists general gear categories and habits for the heat. Specific products will only be added after Rachel has tested them.

Safety first. Heat illness can become a medical emergency. The CDC lists the warning signs of heat exhaustion and heat stroke. Learn them before a hot race, and stop and get help if you notice them.

Why humidity matters

Sweat cools you when it evaporates. When the air is already humid, less of it evaporates, so you get hotter even while you're dripping. Many endurance athletes watch the dew point as well as the temperature for this reason.

Clothing

Hydration and electrolytes

Cooling

Skin