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London Marathon

Sunday, April 25, 2027 · London, UK

Updated May 2026

Site of the first sub-2-hour marathon in a record-eligible race in history (Sabastian Sawe, 1:59:30 at the 2026 edition); the same race produced Tigst Assefa's 2:15:41, the women-only world record. The flat profile is conducive to records, but London also carries one of the deepest recreational fields in the sport, with a heavy charity-runner share that pulls the average finish time long compared to faster-course WMMs.

Kenyan Running Difficulty Index3.9 / 10How the course actually runs
Kenyan Running Elite Field Index9.5 / 10How deep the field around you is

The score breakdown

The Kenyan Running Difficulty Index combines four weighted factors. The heaviest weight (35%) is on Tactical Brutality. That is what a Kenyan coach watches first: where the field actually blows up.

Topographic Stress (30% weight)4.1 / 30
Atmospheric Stress (20% weight)6.0 / 20
Course Friction (15% weight)7.5 / 15
Tactical Brutality (35% weight)12.0 / 35
  • Course Friction score reflects congestion + narrow streets + Tower Bridge severity.

Score confidence: preliminary. Computed from public course, weather, and prize data; calibration against 5K split data and coach review is in progress.

Course profile

Elevation gain
127m / 420ft
Elevation loss
161m / 531ft
Surface
paved smooth
Bridges
1 (moderate)
Late-stage climbs (after mile 18)
None significant.
Profile notes
Predominantly flat. Notable downhill segment at the 5km mark. Macro profile is fast; micro layout is technical due to narrow streets.

Race day

Date
Sunday, April 25, 2027
Field size
56,640

Weather (historical)

Median temp
11.5°C
Humidity
65-80%
Wind
Historically minimal wind

Prize money

Total purse
Full breakdown not published by organizer; top-line figures shown below
Winner
$55K
2nd / 3rd
$30K / $22.5K
Course record bonus
$25K
World record bonus
$125K
Time bonuses
Sub-2:02:00 (M) / Sub-2:15:00 (W) yields $150,000
Notes
Elite appearance fees include performance clauses linked to finishing.

Course records

Men's record1:59:30Sabastian Sawe (KEN), 2026
Women's record2:15:25Paula Radcliffe (GBR), 2003

Recent winners

Top East African winners (Kenya, Ethiopia, Eritrea, Uganda) across the last 10 verified editions: 10 men, 9 women.

YearMen's winnerTimeWomen's winnerTime
2026Sabastian Sawe (KEN)1:59:30WRTigst Assefa (ETH)2:15:41
2025Sabastian Sawe (KEN)2:02:27Tigst Assefa (ETH)2:15:50
2024Alexander Mutiso Munyao (KEN)2:04:01Peres Jepchirchir (KEN)2:16:16
2023Kelvin Kiptum (KEN)2:01:25Sifan Hassan (NED)2:18:33
2022Amos Kipruto (KEN)2:04:39Yalemzerf Yehualaw (ETH)2:17:26
2021Sisay Lemma (ETH)2:04:01Joyciline Jepkosgei (KEN)2:17:43
2020Shura Kitata (ETH)2:05:58Brigid Kosgei (KEN)2:18:58
2019Eliud Kipchoge (KEN)2:02:37Brigid Kosgei (KEN)2:18:20
2018Eliud Kipchoge (KEN)2:04:17Vivian Cheruiyot (KEN)2:18:31
2017Daniel Wanjiru (KEN)2:05:48Mary Keitany (KEN)2:17:01

Training for London Marathon?

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