A pace of 4:00/km is 6:26/mi, or 15.0 km/h (9.3 mph). At that pace you finish a 5K in 20:00, a 10K in 40:00, a half marathon in 1:24:23 and a marathon in 2:48:47.
Try it at another distance
10K finish times around your target, in 5 seconds steps
Change
Time
Pace
−0:20
36:40
3:405:54
−0:15
37:30
3:456:02
−0:10
38:20
3:506:10
−0:05
39:10
3:556:18
Your target
/km
+0:05
40:50
4:056:34
+0:10
41:40
4:106:42
+0:15
42:30
4:156:50
+0:20
43:20
4:206:58
Arrow keys nudge the value. Hold Shift for bigger steps.
Finish times at 4:00 per km
Finish time at this pace for each distance
Distance
Finish time
1K
4:00
1 mile
6:26
5K
20:00
10K
40:00
10 miles
1:04:22
Half marathon
1:24:23
Marathon
2:48:47
50K
3:20:00
Splits
Splits per km
km
Split
Elapsed
1
4:00
4:00
2
4:00
8:00
3
4:00
12:00
4
4:00
16:00
5
4:00
20:00
6
4:00
24:00
7
4:00
28:00
8
4:00
32:00
9
4:00
36:00
10
4:00
40:00
Splits per mile
Mile
Split
Elapsed
1
6:26
6:26
2
6:26
12:52
3
6:26
19:19
4
6:26
25:45
5
6:26
32:11
6
6:26
38:37
Final 0.214 mi
1:23
40:00
Equivalent times at other distances
Estimate
Estimated times at other distances (Riegel formula)
Distance
Estimated time
5K
19:11
10 miles
1:06:14
Half marathon
1:28:15
Marathon
3:04:00
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 40:00
km4:00/km
14:00
28:00
312:00
416:00
520:00
624:00
728:00
832:00
936:00
1040:00
mi6:26/mi
16:26
212:52
319:19
425:45
532:11
638:37
6.2140:00
Pace questions runners ask
How long is a marathon at 4:00/km?
At 4:00/km a marathon takes 2:48:47 and a half marathon 1:24:23.