Llanberis, United Kingdom · Saturday, July 11, 2026

Fixed Distance 50K

Snowdonia Trail Ultra Marathon

Race completed

57 km Distance

2,200 m Climbing

6.2 Grit · Hardcore

53.1181° N, 4.1292° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 39 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 12 hours 12:38 min/km average. Comfortable. Room to walk the climbs and stop at aid. About average for a 50K. Measured against 1058 races of the same distance. Cut-off calculator →

Field size ~163 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2024 edition (60km) — 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 14°C

Rainfall Showers likely

Daylight 16 h 38 m of light

Regional 2001-2020 average for July — NASA POWER, grid elevation 68 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2024	60km	163	Harry Jones · 05:06:43	Rebecca Sleath · 06:56:45
2023	60km	185	Richard Wynne · 05:45:31	Rebecca Hoare · 07:28:57
2022	60km	169	Mauro Persic · 06:14:27	Ellis Cookson · 06:14:03
2019	60km	147	Mark Darbyshire · 05:23:53	Becky Atkinson · 06:45:26
2018	60km	135	Rob Corney · 05:56:05	Andrea Rowlands · 06:47:26

The field shrank 12% between 2023 (185) and 2024 (163). 14% of the 2024 field were women.

DUV results for the 2024 edition (60km) — 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.

Gear for this race

Chosen for 57 km of trail with 2,200 m of ascent.

Trail Running Shoes 39 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 57 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 2,200 m of ascent to walk up.
Headlamps A 12 h limit puts you out there after dark.

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

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

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

Komperdell

Carbon Ultralight Vario 4

4-section folding carbon poles with compact pack size for mandatory gear.

$160 ★★★★★ 4.5

Nitecore

UT32

Dual-beam trail running headlamp (1100 lumens) with spot and flood beams.

$100 ★★★★★ 4.5

All gear guides →

Overview

The Snowdonia Trail Ultra Marathon packed 2200 meters of ascent into a 57-kilometer route starting in Llanberis, demanding an average of 38.6 meters of climbing per kilometer. Organized by Always Aim High Events, the July trail race tested runners on sustained mountain terrain across its 5 editions held between 2018 and 2024.

Despite the vertical load, the 12-hour limit was more generous than 60% of 50k cut-offs, requiring a manageable 12.6 minutes per kilometer to beat the clock. The latest edition in 2024 saw 163 finishers, maintaining a crowd bigger than 88% of 50k fields against a peer group of 2747 events. Entry fees ranged from £95 to £105.

Similar races

Other 50K trail ultras, closest in distance first.