Calories Burned Cycling Fast Calculator - I measured 870 at 82kg
Y.W. Fung · 2026-05-29 · Apple Watch Ultra
870
kcal / hour
435
kcal / 30 min
870
kcal / 60 min
Compared with sitting ~80 kcal/h: +790 extra
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2026-05-29, 82kg, Apple Watch Ultra HR 166 avg. My reference for cycling fast is 870 kcal per hour. 30°C with headwind, 4:30pm on the Tsuen Wan to Tuen Mun bike path. My heart rate shot up on every headwind stretch.
MET 10.1 is the approximate equivalent of my 82kg rate, not a separate measurement. My 82kg reference is 870 kcal/hour. At 70kg, that's about 743. At 98kg, about 1040. The formula (minutes × MET × 3.5 × kg) / 200 is reference only. USDA FoodData is used for food cost, not exercise burn.
What could 30 min cover? About 435 kcal, close to Scoopable Cookie Dough (430 kcal). I'd treat that as a comparison, not a reason to earn a meal.
Fast cycling is a sustained hard ride, not simply a higher number on a bike computer. Riders often seek a long bike path or a clear road to avoid constant braking. On the route from Tsuen Wan toward Tuen Mun, exposed stretches can make wind direction as important as the gradient.
A humid afternoon can make the ride feel relentless even when moving air cools your face. The legs keep working, breathing becomes less conversational and a headwind can turn a familiar stretch into a grind. Traffic, corners and surface changes demand attention; ease off where the path is busy rather than trying to hold the same speed everywhere.
Calories by body weight
Estimated kcal at moderate effort, scaled from the 82kg reference.
| Weight (lbs / kg) | 15 min | 30 min | 45 min | 60 min |
|---|---|---|---|---|
| 125 lbs (56.7kg) | 150 | 301 | 451 | 602 |
| 155 lbs (70.3kg) | 186 | 373 | 559 | 746 |
| 185 lbs (83.9kg) | 223 | 445 | 668 | 890 |
| 215 lbs (97.5kg) | 259 | 517 | 776 | 1035 |
Questions I get
How much does cycling fast burn in 30 minutes?
At my 82kg reference, 435 kcal. I'd adjust for your weight and effort above.
Would I burn the same amount at 70kg?
Probably not. The weight-scaled estimate is 743 kcal per hour, not a personal measurement.
Is the MET figure my actual Watch result?
No. MET 10.1 is an approximate equivalent of the 82kg rate, not another Watch measurement. I use 870 kcal/hour as the starting point.