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Half marathon pace chart: pace per km and per mile, with 5K/10K/15K/20K splits for every goal time
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A half marathon is 21.0975 km (13.1094 miles). The chart below turns every goal time from 1:15 to 3:00 into the pace you need per kilometre and per mile, and the clock you should see at 5 km, 10 km, 15 km, 10 miles and 20 km if you run it evenly. Want a negative split instead? Drag the curve in the planner under the chart. It builds your own split table from the goal time and sends the plan straight to your Apple Watch.
Jump to a goal time: 1:15 1:30 1:45 2:00 2:15 2:30 2:45 3:00
| Finish | per km | per mile | 5 km | 10 km | 15 km | 10 mi | 20 km | Your plan |
|---|---|---|---|---|---|---|---|---|
| 1:15:00 | 3:33 | 5:43 | 17:46 | 35:33 | 53:19 | 57:13 | 1:11:06 | Plan it → |
| 1:20:00 | 3:48 | 6:06 | 18:58 | 37:55 | 56:53 | 1:01:02 | 1:15:50 | Plan it → |
| 1:25:00 | 4:02 | 6:29 | 20:09 | 40:17 | 1:00:26 | 1:04:50 | 1:20:35 | Plan it → |
| 1:30:00 | 4:16 | 6:52 | 21:20 | 42:40 | 1:03:59 | 1:08:39 | 1:25:19 | Plan it → |
| 1:35:00 | 4:30 | 7:15 | 22:31 | 45:02 | 1:07:33 | 1:12:28 | 1:30:03 | Plan it → |
| 1:40:00 | 4:44 | 7:38 | 23:42 | 47:24 | 1:11:06 | 1:16:17 | 1:34:48 | Plan it → |
| 1:45:00 | 4:59 | 8:01 | 24:53 | 49:46 | 1:14:39 | 1:20:06 | 1:39:32 | Plan it → |
| 1:50:00 | 5:13 | 8:23 | 26:04 | 52:08 | 1:18:12 | 1:23:55 | 1:44:17 | Plan it → |
| 1:55:00 | 5:27 | 8:46 | 27:15 | 54:31 | 1:21:46 | 1:27:43 | 1:49:01 | Plan it → |
| 2:00:00 | 5:41 | 9:09 | 28:26 | 56:53 | 1:25:19 | 1:31:32 | 1:53:45 | Plan it → |
| 2:05:00 | 5:55 | 9:32 | 29:37 | 59:15 | 1:28:52 | 1:35:21 | 1:58:30 | Plan it → |
| 2:10:00 | 6:10 | 9:55 | 30:49 | 1:01:37 | 1:32:26 | 1:39:10 | 2:03:14 | Plan it → |
| 2:15:00 | 6:24 | 10:18 | 32:00 | 1:03:59 | 1:35:59 | 1:42:59 | 2:07:59 | Plan it → |
| 2:20:00 | 6:38 | 10:41 | 33:11 | 1:06:22 | 1:39:32 | 1:46:48 | 2:12:43 | Plan it → |
| 2:25:00 | 6:52 | 11:04 | 34:22 | 1:08:44 | 1:43:06 | 1:50:36 | 2:17:27 | Plan it → |
| 2:30:00 | 7:07 | 11:27 | 35:33 | 1:11:06 | 1:46:39 | 1:54:25 | 2:22:12 | Plan it → |
| 2:35:00 | 7:21 | 11:49 | 36:44 | 1:13:28 | 1:50:12 | 1:58:14 | 2:26:56 | Plan it → |
| 2:40:00 | 7:35 | 12:12 | 37:55 | 1:15:50 | 1:53:45 | 2:02:03 | 2:31:41 | Plan it → |
| 2:45:00 | 7:49 | 12:35 | 39:06 | 1:18:12 | 1:57:19 | 2:05:52 | 2:36:25 | Plan it → |
| 2:50:00 | 8:03 | 12:58 | 40:17 | 1:20:35 | 2:00:52 | 2:09:41 | 2:41:09 | Plan it → |
| 2:55:00 | 8:18 | 13:21 | 41:28 | 1:22:57 | 2:04:25 | 2:13:30 | 2:45:54 | Plan it → |
| 3:00:00 | 8:32 | 13:44 | 42:40 | 1:25:19 | 2:07:59 | 2:17:18 | 2:50:38 | Plan it → |
Build your own split plan
The chart is an even split. Here you choose the shape: pick the goal time and the number of splits, then drag either end of the line. Start slower and finish faster for a negative split. The total always stays on your goal time.
Drag either end of the line up or down (or use the slider): the other end mirrors it, so the plan always finishes on your goal time. Faster is higher.
| Split | To | Pace | Split time | Elapsed |
|---|
Run this plan on your Apple Watch
Send the plan to Vanoor and it lands in My Workouts with every split's target pace already set. Sync it, and on race day the Watch shows the band for the split you're in and whether you're inside it. Switch on Off-pace alert in Settings → Alerts and it taps your wrist when you drift out.
On an iPhone with Vanoor, Send to Vanoor opens the app with this plan. On a computer it shows a QR code to scan with your iPhone.
Saved as a .vanoor file. On iPhone, open it from Downloads in the Files app and choose Vanoor; from a computer, AirDrop or email it to your iPhone.
No Vanoor yet? Get it on the App Store. It's 7 days free, then $14.99 once. The plan is built in your browser; nothing is uploaded.Even-split times; the last 1.0975 km is run at the same pace. Rounded to the second.
How to use the chart
- Pick a realistic goal. A recent 10K time × 2.1 is a fair half marathon prediction for a trained runner; ×2.2 if your long runs are short.
- Read across: a 1:45 half is 4:59/km, which puts 5 km at 24:53, 10 km at 49:46, 15 km at 1:14:39 and 20 km at 1:39:32.
- Check the 10 km split on the day. If you're more than a minute ahead of the chart at 10 km, you started too fast; the second half will collect the debt.
Even, negative or positive split?
The chart is an even split. Most personal bests are run as a slight negative split (the second half a touch faster), and most blow-ups as a large positive one. The planner above turns the same goal time into splits that start a few seconds slower and finish faster; negative vs positive split explains when each shape wins, and the marathon and half marathon pacing guide covers hills, fuelling and what to do when the plan slips.
Running the plan on Apple Watch
Apple's Workout app can show a pace alert around one target. Vanoor runs the whole plan: build it in the planner above and tap Send to Vanoor (or draw the same curve in the app), then sync. On the wrist you see the target band for the split you're in, whether you're inside it, and how many seconds you are ahead of or behind plan. With the Off-pace alert on, you get a haptic when you drift, so there is no arithmetic to do at 18 km.
Half marathon pace — quick answers
What pace is a 2-hour half marathon per mile?
9:09 per mile (5:41 per km). 10 km in 56:53, 10 miles in 1:31:32, 20 km in 1:53:45.
What pace is a 1:45 half marathon per mile?
8:01 per mile (4:59 per km). 10 km in 49:46, 10 miles in 1:20:06.
What pace is a 1:30 half marathon?
4:16 per km, or 6:52 per mile. 10 km in 42:40, 10 miles in 1:08:39.
What pace is a 1:50 half marathon?
5:13 per km, or 8:23 per mile. 10 km in 52:08, 10 miles in 1:23:55, 20 km in 1:44:17.
What pace is a 1:55 half marathon?
5:27 per km, or 8:46 per mile. 10 km in 54:31, 10 miles in 1:27:43, 20 km in 1:49:01.
What pace do I need for a sub-2 half marathon?
Anything faster than 5:41 per km (9:09 per mile) on an even split. Plan for 5:38–5:39/km to leave a buffer for drink stations and a crowded start, and keep 10 km at or just under 56:30.
What pace is a 2:10 half marathon?
6:10 per km, or 9:55 per mile. 10 km in 1:01:37, 10 miles in 1:39:10, 20 km in 2:03:14.
What pace is a 2:15 half marathon?
6:24 per km, or 10:18 per mile. 10 km in 1:03:59, 10 miles in 1:42:59, 20 km in 2:07:59.
What pace is a 2:30 half marathon?
7:07 per km, or 11:27 per mile. 10 km in 1:11:06, 10 miles in 1:54:25, 20 km in 2:22:12.
Should I run a half marathon at an even pace?
Even to slightly negative. Use the chart for the even version and the negative split calculator if you want the second half a few seconds per km faster.
Can my Apple Watch show these splits during the race?
Apple's app shows one pace alert; Vanoor shows the target band for each kilometre of the plan and, with the pace alert on in Settings → Alerts, buzzes when you leave it.
Last checked 18 September 2026.
Every figure in the chart and the answers above is computed from the race distance (21.0975 km) and the goal time, then rounded to the second. Nothing here is copied from another chart. The generator is half_marathon_chart_html() in this site's build script.
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