Zwift - London - Greater 8 Distance: 21.08 km Duration: 0:39:30 Calories: 610.736 Avg power: 270 W Max power: 400 W Avg heart rate: 124 bpm Max heart rate: 151 bpm Elevation gain: 225 m » View on Zwift → 28 January 2021 31 words Rides Written by thechelsuk.