Rowing · Concept2 formula

2:40 split: watts, times and calories

A 2:40 /500m split is 85 watts. Held for 2,000 m, that is 10:40.0.

Power
85 W
85.4 W exactly
2,000 m
10:40.0
at 2:40
5,000 m
26:40
at 2:40
Calories / hour
594
monitor (175 lb rower)

Use your own numbers: open the rowing calculator →

The calculation

pace = 160 s ÷ 500 m = 0.3200 s/m · watts = 2.80 ÷ 0.3200³ = 85.4 W

This is Concept2’s formula (watts calculator). Calories use the widely documented monitor formula, 4 × 0.8604 × watts + 300 per hour, which assumes a 175 lb rower — see Concept2’s calorie calculator for the correction for your weight.

Times at 2:40 /500m

DistanceTime
500 m2:40.0
1,000 m5:20.0
2,000 m10:40.0
5,000 m26:40.0
6,000 m32:00.0
10,000 m53:20.0
21,097 m (half marathon)1:52:31.0
42,195 m (marathon)3:45:02.4

Calories by bodyweight

RowerCalories per hourPer 30 minutes
55 kg (121 lb)502251
65 kg (143 lb)540270
75 kg (165 lb)577289
85 kg (187 lb)615308
95 kg (209 lb)653327
105 kg (231 lb)691345

Other splits

Last reviewed: 2026-10-04 · Disclaimer

FAQ

2:40 split — questions

About 85 watts, using Concept2’s formula watts = 2.80 ÷ (split ÷ 500)³.

Holding 2:40 per 500 m for 2,000 m gives 10:40.0.

The Concept2 monitor shows about 594 calories per hour at 85 W, assuming a 175 lb (79 kg) rower. Concept2’s correction: subtract 300 and add 1.714 × your weight in pounds.