London Marathon 2027
- Date
- April 25, 2027
- Location
- London, United Kingdom
- Distance
- 42.2 km
- Difficulty
- Easy
- Field
- 59,830 finishers
The 2027 London Marathon takes place on Sunday, April 25, 2027 in London, United Kingdom. Point-to-point 26.2-mile course starting from three color-coded starts in Blackheath and Greenwich, merging before mile 3 in Woolwich. Race-week weather is typically 6°C to 15°C.
Training for the London Marathon?
Coach Icarus builds your plan around your fitness and your schedule.
The course
Point-to-point 26.2-mile course starting from three color-coded starts in Blackheath and Greenwich, merging before mile 3 in Woolwich. It passes the Cutty Sark in Greenwich, crosses Tower Bridge just before halfway, loops through Canary Wharf and the Isle of Dogs, then returns along the Embankment past Big Ben and Parliament to finish on The Mall in front of Buckingham Palace. Mostly flat with gentle undulations; closed roads.
Course summary source: sportstravelmagazine.com
Course map & elevation
Distance
42.3 km
Elevation gain
50 m
Elevation loss
79 m
High / low
52 / 3 m
🛰️ Community-sourced GPX with DEM-corrected elevation — not an organizer-verified course.
Race-week weather
Typical high
15°C
Typical low
6°C
Year-to-year swing
±2.2°C
Rain
1.5 mm/day
Based on 2020-2025 of race-week history, with peak gusts around 19 km/h.
Difficulty
Entry difficulty: Lottery / ballot — separate from how hard the course itself is.
Race facts
- Official race site
- tcslondonmarathon.com ↗
- Start time
- 09:35
- Field size
- 59,830 finishers (2026)
- Boston qualifier
- Yes
Distances: 42.2 km
When is the London Marathon 2027?
The 2027 London Marathon takes place on Sunday, April 25, 2027.
Training for the London Marathon?
Coach Icarus builds your plan around your fitness and your schedule.
Predict your finish time
Enter one recent race result and get predicted finish times across 5K, 10K, half marathon, and marathon.
Predicted Finish Time
52:07
Pace / km
5:13
Pace / mile
8:23
| Distance | Predicted Time |
|---|---|
| 5K | 25:00 |
| 10K | 52:07 |
| Half Marathon | 1:55:00 |
| Marathon | 3:59:47 |
Predictions assume similar fitness, course, and conditions — they are a starting point for goal setting, not a guarantee.
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