Free race heat tool

Check your race heat readiness in 60 seconds.

Answer a few questions about your race date, expected temperature, recent heat exposure, and comfort in heat. Sweltr returns an educational readiness band and practical next steps.

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Race window2-4 weeks

Heat sessions2-3 recent

Expected tempHot

ReadinessBuilding

Example output

Building readiness

You have enough time and some heat exposure to build a stronger base before race day.

Race or event date

Sport

Expected race temperature

Current heat exposure

Heat sessions in the last 14 days

Comfort training in heat

Sauna access

Your readiness snapshot

Building readiness

You have enough time and some heat exposure to build a stronger base.

Preparation score5/8

Race window: 2-4 weeks
Use case: running

Build the heat base

1Add repeatable exposuresUse 2-3 easy heat exposures per week for the next 2-3 weeks, keeping the first sessions short.
2Pair sauna with easy daysUse sauna after easy runs or rest days, not as a punishment session after hard work.
3Practice cooling and pacingUse the next easy run to rehearse shade, fluid access, and conservative pacing for hot conditions.
4Start the protocolTrack heat load, comfort, and sweat cues in Sweltr so the guided protocol has useful context.

Start tracking in Sweltr Learn about Sweltr

This is an educational readiness check, not medical advice. Heat illness risk depends on health status, medications, acclimation, humidity, pacing, hydration, and race-day conditions.

Timing matters

A hot event next week calls for a different plan than a hot event six weeks away.

Recent exposure matters

Heat readiness is easier to build when recent sessions are consistent and not crammed late.

Comfort matters

RPE, thermal comfort, hydration cues, and sweat timing help explain how heat work is landing.