Welwyn Garden City, United Kingdom · Saturday, March 20, 2027

Fixed Distance 50K

London Lea Valley 50 km

152 days away
50 km Distance
not publishedn/a Climbing
2.5 est Grit · Entry level

Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.

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51.8017° N, 0.2069° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 9 hours 10:48 min/km average. Firm. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. About average for a 50K. Measured against 1058 races of the same distance. Cut-off calculator →
Field size ~256 Large. Rarely out of sight of another runner.

DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, March

Daytime high 10°C
Night low 2°C
Rainfall Mostly dry
Daylight 12 h 06 m of light

Regional 2001-2020 average for March — NASA POWER, grid elevation 66 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2026 50km 256 Charlie Allenby · 03:27:52 Kelsey Price · 03:46:26
2025 50km 246 Dirk Schlueter · 03:30:05 Emily Owen · 03:58:08
2024 50km 235 Yi-Lun Shen · 03:36:15 Teresa Reason · 04:02:45
2023 50km 106 Richard Loader · 03:23:32 Anna Brown · 04:23:29
2022 50km 100 Paul Brennan · 03:40:19 Kristina Kucar · 03:55:38
2021 50km 125 Chris Holmes · 03:14:20 Kristina Kucar · 03:42:56

The field has held steady: 246 in 2025, 256 in 2026. 27% of the 2026 field were women.

DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

  • gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.

Gear for this race

Chosen for 50 km of trail.

  • Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 50 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 50 km, without the bounce.
  • GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

Salomon

Sense Ride 5

RunRepeat found the Salomon Sense Ride 5 to have immaculate lockdown and a smooth and stable ride, making it confident on moderate trails and steep downhills. I…

★★★★★ 4.5

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Tailwind

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

Garmin

Enduro 3

Ultra-endurance GPS watch with solar charging and 300+ hour battery in GPS mode.

$900 ★★★★★ 4.8
All gear guides →

Overview

The London Lea Valley 50 km trail race, organized by Camino Ultra, will take place on March 20, 2027, in Welwyn Garden City, United Kingdom. The entry fee is £57-59.

With a field bigger than 94% of 50k races, this event has a relatively large number of participants compared to its peers. The 9-hour time limit means a pace of 10.8 minutes per kilometer, which is tighter than 65% of 50k cut-offs, leaving less margin for error than most races of this distance. This will be the seventh edition of the race, which first ran in 2021. The latest edition in 2026 saw 256 finishers.

Similar races

Other 50K trail ultras, closest in distance first.