A pace of 12:50/mi is 7:58/km, or 7.5 km/h (4.7 mph). At that pace you finish a 5K in 39:52, a 10K in 1:19:45, a half marathon in 2:48:14 and a marathon in 5:36:28.
Try it at another distance
10K finish times around your target, in 5 seconds steps
Change
Time
Pace
−0:20
1:17:40
7:4612:30
−0:15
1:18:11
7:4912:35
−0:10
1:18:42
7:5212:40
−0:05
1:19:13
7:5512:45
Your target
/mi
+0:05
1:20:16
8:0212:55
+0:10
1:20:47
8:0513:00
+0:15
1:21:18
8:0813:05
+0:20
1:21:49
8:1113:10
Arrow keys nudge the value. Hold Shift for bigger steps.
Finish times at 12:50 per mile
Finish time at this pace for each distance
Distance
Finish time
1K
7:58
1 mile
12:50
5K
39:52
10K
1:19:45
10 miles
2:08:20
Half marathon
2:48:14
Marathon
5:36:28
50K
6:38:43
Splits
Splits per km
km
Split
Elapsed
1
7:58
7:58
2
7:58
15:57
3
7:58
23:55
4
7:58
31:54
5
7:58
39:52
6
7:58
47:51
7
7:58
55:49
8
7:58
1:03:48
9
7:58
1:11:46
10
7:58
1:19:45
Splits per mile
Mile
Split
Elapsed
1
12:50
12:50
2
12:50
25:40
3
12:50
38:30
4
12:50
51:20
5
12:50
1:04:10
6
12:50
1:17:00
Final 0.214 mi
2:45
1:19:45
Equivalent times at other distances
Estimate
Estimated times at other distances (Riegel formula)
Distance
Estimated time
5K
38:15
10 miles
2:12:03
Half marathon
2:55:57
Marathon
6:06:50
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 1:19:45
km7:58/km
17:58
215:57
323:55
431:54
539:52
647:51
755:49
81:03:48
91:11:46
101:19:45
mi12:50/mi
112:50
225:40
338:30
451:20
51:04:10
61:17:00
6.211:19:45
Pace questions runners ask
How long is a marathon at 12:50/mi?
At 12:50/mi a marathon takes 5:36:28 and a half marathon 2:48:14.