A pace of 12:20/mi is 7:40/km, or 7.8 km/h (4.9 mph). At that pace you finish a 5K in 38:19, a 10K in 1:16:38, a half marathon in 2:41:41 and a marathon in 5:23:22.
Try it at another distance
10K finish times around your target, in 5 seconds steps
Change
Time
Pace
−0:20
1:14:34
7:2712:00
−0:15
1:15:05
7:3012:05
−0:10
1:15:36
7:3412:10
−0:05
1:16:07
7:3712:15
Your target
/mi
+0:05
1:17:09
7:4312:25
+0:10
1:17:40
7:4612:30
+0:15
1:18:11
7:4912:35
+0:20
1:18:42
7:5212:40
Arrow keys nudge the value. Hold Shift for bigger steps.
Finish times at 12:20 per mile
Finish time at this pace for each distance
Distance
Finish time
1K
7:40
1 mile
12:20
5K
38:19
10K
1:16:38
10 miles
2:03:20
Half marathon
2:41:41
Marathon
5:23:22
50K
6:23:11
Splits
Splits per km
km
Split
Elapsed
1
7:40
7:40
2
7:40
15:20
3
7:40
22:59
4
7:40
30:39
5
7:40
38:19
6
7:40
45:59
7
7:40
53:39
8
7:40
1:01:19
9
7:40
1:08:58
10
7:40
1:16:38
Splits per mile
Mile
Split
Elapsed
1
12:20
12:20
2
12:20
24:40
3
12:20
37:00
4
12:20
49:20
5
12:20
1:01:40
6
12:20
1:14:00
Final 0.214 mi
2:38
1:16:38
Equivalent times at other distances
Estimate
Estimated times at other distances (Riegel formula)
Distance
Estimated time
5K
36:45
10 miles
2:06:54
Half marathon
2:49:05
Marathon
5:52:32
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 1:16:38
km7:40/km
17:40
215:20
322:59
430:39
538:19
645:59
753:39
81:01:19
91:08:58
101:16:38
mi12:20/mi
112:20
224:40
337:00
449:20
51:01:40
61:14:00
6.211:16:38
Pace questions runners ask
How long is a marathon at 12:20/mi?
At 12:20/mi a marathon takes 5:23:22 and a half marathon 2:41:41.