TRUE EFFORT

RUNNING ANALYTICS FOR HOT PLACES

Hot runs.
Honest fitness.

Translate every hot run into a cool-condition equivalent, understand heat strain and HR drift, and get race predictions that account for the conditions you actually train in.

Hong Kong
32°C
Singapore
31°C
Dubai
38°C
Miami
30°C
Today’s True EffortLast 7 days⌄
Cool-equivalent pace4:41 /km+19 sec/km faster
Thermal strainHighStrain score 78/100
Heat loadSE 12 km/hWind
Cool-equivalent pace trend4:41/km
HR drift (latest run)+12%Moderate rise
Heat accumulationHighAfter 85 min
Race day prediction3:19:2210°C · low strainYour potential range3:16–3:24
Weather-adjusted

See the cool-condition equivalent of every run.

Understand the heat

Track thermal strain, heat load and HR drift.

Race-day clarity

Predict performance in the conditions that count.

Train smarter

Make every hot run count for more.

SEE THE TRUTH BEHIND THE HEAT

Your hot run.
Its cool-condition equivalent.

True Effort combines weather, humidity, wind, heart-rate response and duration to show the work your body actually did—not just the pace your watch recorded.

Your run · 38°C5:00 /km
28°C
Temp
78%
Humidity
SE 12 km/h
Wind
Cool-equivalent4:41 /km
24°C
Dew point
45%
Humidity
Low
Wind

RACE-DAY SCENARIOS

Plan for race day. Know your range.

Understand how conditions affect the prediction before the start line.

Open dashboard
Ideal day10°C · Low strain3:19:22
Cool morning16°C · Low strain3:24:08
Typical24°C · Moderate strain3:31:47
Hot & humid28°C · High strain3:41:33

FOR RUNNERS AND COACHES

Train the athlete.
Not the weather.

See whether pace changed because fitness fell—or because the weather made the same effort more expensive. Use the dashboard to review runs, spot rising heat strain and set realistic race targets.

Open my dashboard

I used to guess how my fitness would hold up in the heat. Now I know.

— Daniel P., marathon runner

Stop guessing. Start training with clarity.

See the performance behind every hot run.

See my True Effort