London Marathon: Pacing & Race-Day Strategy
Flat, fast, and famous for huge crowds and world records.
- Where:
- London, United Kingdom
- When:
- Saturday, April 24, 2027
- Course:
- Flat · fast · loop
- Best run as:
- Negative split
Course & elevation
London is flat and fast, with a downhill nudge in the first few miles and no significant climbs. The separate start lines merge by mile 3, and the course winds past Cutty Sark, Tower Bridge near halfway, Canary Wharf, and finishes on The Mall.
- Start → Finish
- 160 → 30 ft
- Net
- −130 ft
- Total gain
- ≈ 246 ft
Key moments
- Mile 3The three start lines converge here. It gets crowded, so be patient finding space.
- Mile 12.5Tower Bridge is iconic and loud. Resist the urge to surge.
- Mile 19–22Canary Wharf’s twisting streets can break your rhythm.
- Mile 26Past Big Ben and onto The Mall for the finish.
Pacing strategy
A strong negative-split course. Crowds early can be congested, so don’t panic about a slightly slow first mile. Settle in and build through the second half.
Pacing by goal time
Checkpoint splits for four common goals at London Marathon. These are effort-even rather than pace-even: the paces shift with the course profile, so climbs are slower and descents faster by the amount the grade actually costs. For any other goal time, use the planner below.
| Checkpoint | Sub-3:00 | Sub-3:30 | Sub-4:00 | Sub-4:30 |
|---|---|---|---|---|
| Mile 3.1 | 20:066:45/mi | 23:277:52/mi | 26:478:59/mi | 30:0810:07/mi |
| Mile 6.2 | 40:366:53/mi | 47:228:02/mi | 54:089:11/mi | 1:00:5410:19/mi |
| Mile 9.3 | 1:01:196:53/mi | 1:11:328:02/mi | 1:21:459:11/mi | 1:31:5810:20/mi |
| Mile 12.4 | 1:21:596:53/mi | 1:35:388:02/mi | 1:49:189:11/mi | 2:02:5810:20/mi |
| Mile 15.5 | 1:42:416:53/mi | 1:59:488:02/mi | 2:16:549:11/mi | 2:34:0110:20/mi |
| Mile 18.6 | 2:03:246:55/mi | 2:23:588:04/mi | 2:44:329:13/mi | 3:05:0510:23/mi |
| Mile 21.7 | 2:24:036:53/mi | 2:48:048:02/mi | 3:12:049:11/mi | 3:36:0510:20/mi |
| Mile 24.9 | 2:44:446:53/mi | 3:12:118:02/mi | 3:39:389:11/mi | 4:07:0610:20/mi |
| Finish | 2:58:306:53/mi | 3:28:158:02/mi | 3:58:009:11/mi | 4:27:4410:19/mi |
Grade adjustment is a model, not a promise. It assumes even effort and ignores wind, heat, and how well your legs handle sustained descent — which on a steep course is often the deciding factor.
Plan your mile splits
Enter your goal time to get a mile-by-mile pacing band for London Marathon. The negative split option is pre-selected to suit this course.
| Mile | Pace | Elapsed |
|---|---|---|
| 1 | 9:25/mi | 9:25 |
| 2 | 9:24/mi | 18:49 |
| 3 | 9:23/mi | 28:11 |
| 4 | 9:21/mi | 37:33 |
| 5 | 9:20/mi | 46:53 |
| 6 | 9:19/mi | 56:12 |
| 7 | 9:18/mi | 1:05:29 |
| 8 | 9:16/mi | 1:14:45 |
| 9 | 9:15/mi | 1:24:00 |
| 10 | 9:14/mi | 1:33:14 |
| 11 | 9:13/mi | 1:42:27 |
| 12 | 9:11/mi | 1:51:38 |
| 13 | 9:10/mi | 2:00:48 |
| 14 | 9:09/mi | 2:09:57 |
| 15 | 9:07/mi | 2:19:04 |
| 16 | 9:06/mi | 2:28:10 |
| 17 | 9:05/mi | 2:37:15 |
| 18 | 9:04/mi | 2:46:19 |
| 19 | 9:02/mi | 2:55:21 |
| 20 | 9:01/mi | 3:04:23 |
| 21 | 8:60/mi | 3:13:23 |
| 22 | 8:59/mi | 3:22:21 |
| 23 | 8:57/mi | 3:31:19 |
| 24 | 8:56/mi | 3:40:15 |
| 25 | 8:55/mi | 3:49:10 |
| 26 | 8:54/mi | 3:58:03 |
| 26.22 | 8:53/mi | 4:00:00 |
Fueling & hydration
Lucozade Sport and water are offered at regular stations along the course. Take your own gels on a fixed schedule; the flat, crowd-charged miles make it easy to forget to fuel.
Weather
Mild and often damp London spring, typically 45–60°F and occasionally warm.
Dial in your pacing & fueling
New to how training builds toward a race like this? Start with Anatomy of a Running Plan, find your zones with the pace calculator, and plan race-day nutrition with the fueling calculator.
Related marathon guides
Train for London Marathon
Build a free, personalized marathon plan that progresses you safely to race day, with paces tuned to your goal.
Create your free plan