Ambleside, United Kingdom · Saturday, July 11, 2026

Fixed Distance 100K

Lakeland Trails Ultra 100 km

Race completed

100 km Distance

3,783 m Climbing

10.0 Grit · Elite / extreme

54.4326° N, 2.9617° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 38 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 23 hours 13:48 min/km average. Generous. Room to walk the climbs and stop at aid. More forgiving than 81% of 100K races. Measured against 226 races of the same distance. Cut-off calculator →

Field size ~109 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2024 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, July

Daytime high 17°C

Night low 12°C

Rainfall Showers likely

Daylight 16 h 54 m of light

Regional 2001-2020 average for July — NASA POWER, grid elevation 164 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2024	100km	109	George Darvell · 11:16:56	Jen Hadwin · 13:47:40
2023	100km	102	John O'Mahony · 13:17:06	Jennifer Lockett · 15:37:04
2022	100km	85	Steven Sandilands · 14:56:50	Katie Kaars Sijpesteijn · 11:27:23
2021	100km	121	George Foster · 09:30:11	Meryl Cooper · 11:32:19
2019	100.8km	102	Kristof Nowicki · 12:03:12	Katherine Samuelson · 16:40:03
2017	110km	203	Andrew Horrobin · 11:30:58	Sally Ford · 15:02:20
2016	110km	211	Andrew Horrobin · 12:06:37	Sally Ford · 15:19:03
2015	110km	194	Kim Collison · 10:48:57	Sally Ford · 14:49:01
2013	100km	86	Marcus Scotney · 11:38:44	Nicole Taylor · 14:17:03

The field grew 7% between 2023 (102) and 2024 (109). 24% of the 2024 field were women.

DUV results for the 2024 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

terrain This is a rolling course. Expect fast, runnable sections where rhythm is key.
gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

Gear for this race

Chosen for 100 km of trail with 3,783 m of ascent.

Trail Running Shoes 38 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 3,783 m of ascent to walk up.
Headlamps A 23 h limit puts you out there after dark.

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

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

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Black Diamond

Distance FLZ

Lightweight folding trekking poles with FlickLock Z adjustment. 340g per pole.

$170 ★★★★★ 4.7

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

All gear guides →

Overview

The Lakeland Trails Ultra 100 km, organised by Lakelands Trails, is a 100 km trail race in Ambleside, United Kingdom. It has been held 9 times since 2013, with the most recent edition in 2024 seeing 109 finishers. The course features 3783 meters of elevation gain, giving it a climb of 37.8 meters per kilometer.

With a field bigger than 74% of 100k races, this event has a larger field than many of its peers. The 23-hour time limit is more generous than 81% of 100k cut-offs, offering a cutoff pace of 13.8 minutes per kilometer. The entry fee is £155.

Similar races

Other 100K trail ultras, closest in distance first.