A pace of 3:40/km is 5:54/mi, or 16.4 km/h (10.2 mph). At that pace you finish a 5K in 18:20, a 10K in 36:40, a half marathon in 1:17:21 and a marathon in 2:34:43.
Try it at another distance
10K finish times around your target, in 5 seconds steps
Arrow keys nudge the value. Hold Shift for bigger steps.
Finish times at 3:40 per km
Finish time at this pace for each distance
Distance
Finish time
1K
3:40
1 mile
5:54
5K
18:20
10K
36:40
10 miles
59:01
Half marathon
1:17:21
Marathon
2:34:43
50K
3:03:20
Splits
Splits per km
km
Split
Elapsed
1
3:40
3:40
2
3:40
7:20
3
3:40
11:00
4
3:40
14:40
5
3:40
18:20
6
3:40
22:00
7
3:40
25:40
8
3:40
29:20
9
3:40
33:00
10
3:40
36:40
Splits per mile
Mile
Split
Elapsed
1
5:54
5:54
2
5:54
11:48
3
5:54
17:42
4
5:54
23:36
5
5:54
29:30
6
5:54
35:24
Final 0.214 mi
1:16
36:40
Equivalent times at other distances
Estimate
Estimated times at other distances (Riegel formula)
Distance
Estimated time
5K
17:35
10 miles
1:00:43
Half marathon
1:20:54
Marathon
2:48:40
These are estimates from the Riegel formula, T2 = T1 × (D2 ÷ D1)^1.06. They assume you’ve trained for the other distance, so treat them as a guide, not a promise.
10K 36:40
km3:40/km
13:40
27:20
311:00
414:40
518:20
622:00
725:40
829:20
933:00
1036:40
mi5:54/mi
15:54
211:48
317:42
423:36
529:30
635:24
6.2136:40
Pace questions runners ask
How long is a marathon at 3:40/km?
At 3:40/km a marathon takes 2:34:43 and a half marathon 1:17:21.