Walesby, United Kingdom · Saturday, May 9, 2026

Fixed Distance 50 mi

Dukeries Ultra 40 Mile

Race completed

66 km Distance

not publishedn/a Climbing

3.3 est Grit · Challenging

Calculated from 66 km alone — the organiser has not published an elevation profile. Read 3.3 as a floor, not a verdict.

53.4163° N, 0.2950° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 10.5 hours 9:33 min/km average. Comfortable. Room to walk the climbs and stop at aid. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Tighter than 81% of 50 mi races. Measured against 471 races of the same distance. Cut-off calculator →

Field size ~93 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2024 edition (40.8mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, May

Daytime high 14°C

Night low 8°C

Rainfall Mostly dry

Daylight 15 h 29 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 15 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2024	40.8mi	93	Steven Lord · 05:18:47	Vicky Linfoot · 06:58:18
2023	40.8mi	75	Sam Harrison · 05:55:32	Elizabeth Harvey · 06:48:05
2022	40.8mi	112	Ste Shanks · 05:32:56	Claire Howard · 06:02:46
2021	40.8mi	83	Thomas Shaw · 04:44:40	Marie Sly · 06:52:49
2019	40.8mi	109	Ross Mallett · 05:29:57	Rachael Shelbourn · 05:48:29
2018	40.8mi	105	Robert Payne · 04:57:39	Rachael Shelbourn · 06:25:11
2017	40.8mi	105	Ian Cox · 05:22:30	Gillian Johnson · 05:56:12
2016	40mi	92	David Greenwood · 05:17:31	Karen Nix · 06:24:31
2015	40mi	78	Ben Harris · 05:00:58	Marie Sly · 06:22:48
2014	40mi	56	David Smithers · 05:41:10	Marie Sly · 06:52:03

The field grew 24% between 2023 (75) and 2024 (93). 45% of the 2024 field were women.

DUV results for the 2024 edition (40.8mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

👟 gear

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

By UltraHub Expert

Gear for this race

Chosen for 66 km of trail.

Trail Running Shoes 66 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 66 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 66 km, without the bounce.
GPS Watches Battery life first — a 66 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

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

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 Dukeries Ultra 40 Mile is a trail race in Walesby, United Kingdom, taking place on May 9, 2026. The 66-kilometer course explores forest trails and footpaths through Sherwood Forest, Cresswell Crags, and Clumber Park.

With a 10.5-hour time limit, this race has a tighter cutoff than 81% of 50-mile races. This means runners will need to maintain a pace faster than 9.5 minutes per kilometer to finish. The race has a larger field than 72% of its 50-mile peers, with 93 finishers in its 2024 edition.

Similar races

Other 50 mi trail ultras, closest in distance first.