Find Trail Ultra Marathon Races

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Race Landscape Video Difficulty Score Distance Elevation Month Compare Races
Lon Las Cymru 250 Mile Ultra Marathon Race Through Wales in October cambrian mountains mid wales landscape environment
531.29 407.00km 6287metres October Compare this race
The Dragons Back 380km Multi Stage Ultra Marathon Race Through Wales in September cadair idris mountain wales landscape eryri trail ultra-marathon views
691.39 373.00km 17029metres September Compare this race
Apex Running Slate Trail Ultra 145km Ultra Marathon Race in October near Snowdonia eryri snowdonia landscape
245.92 145.00km 3892metres October Compare this race
Ultra X Wales 110km Multi Stage Ultra Marathon Race in August near Snowdonia Eryri cadair idris mountain wales landscape eryri trail ultra-marathon views
224.85 111.00km 4295metres July Compare this race
Ultra-Trail Snowdonia UTS 100KM by UTMB Ultra Marathon Race in May 2025 near Llanberis eryri snowdonia landscape
102.00km 6494metres May Compare this race
GB Ultras Snowdon 100 Mile Ultra Marathon Race in September Near Snowdonia eryri snowdonia landscape
298.43 160.00km 6253metres September Compare this race
Ultra-Trail Snowdonia UTS 100KM by UTMB Ultra Marathon Race in May 2026 near Llanberis eryri snowdonia landscape
98.00km 4633metres May Compare this race
GB Ultras Snowdon Ultra 50 Mile Ultra Marathon Race in September near Betws Y Coed yr wyddfa snowdon eryri national park views landscape trail running ultra marathon
173.78 71.00km 3308metres September Compare this race
Apex Running Ultra Tour of the Quarries 87km Ultra Marathon in October Near Bangor eryri snowdonia landscape
177.39 87.00km 2829metres October Compare this race
UTS 100M Ultra-Trail Snowdonia by UTMB 100 Mile Ultra Marathon Race in May near Llanberis eryri snowdonia landscape
364.25 160.00km 9795metres May Compare this race
UTS 50K Ultra-Trail Snowdonia by UTMB Ultra Marathon Race in May near Snowdonia eryri snowdonia landscape
176.24 49.00km 3384metres May Compare this race
Apex Running 14 Peaks Ultra Welsh 3000s Ultra Marathon in June near Eryri Snowdonia eryri snowdonia landscape 205.70 51.90km 3730metres June Compare this race
GB Ultras Ultra Wales 50 Mile Ultra Marathon Race in June near Dolgellau cadair idris mountain wales landscape eryri trail ultra-marathon views
184.69 82.00km 3289metres June Compare this race
Run Through Trails Snowdonia Sea2Sky 53K Ultra Marathon in August Near Barmouth cadair idris mountain eryri snowdonia national park landscape vista
129.32 53.00km 1742metres August Compare this race

🏃 Course Basics & Intensity

Distance
The total length of the race in kilometers or miles.
Elevation per KM
The average vertical gain every kilometer; higher numbers mean steeper races.
Kilometer Effort
The "real-feel" distance combining flat length and vertical climbing into one effort metric.
Difficulty Score
A unique rating calculated from distance, ascent, and terrain technicality.
DNF Rate
The percentage of runners who historically do not finish the race.
Ground Type
Defines the surface, such as hard-packed trail, technical mountain rock, or bog.

⛰️ Climbing & Peaks

Categorised Climbs
The total number of significant, sustained uphill sections on the course.
Avg/Max Altitude
The average and peak heights above sea level you will reach during the race.
Uphill/Downhill %
The percentage of the course spent climbing, descending, or running on flat ground.
Steepest Hill
The maximum gradient percentage you will encounter on the toughest climb.
Cat Biggest Climb
The length and total vertical gain of the single largest climb in the race.

⏱️ Logistics & Timing

Finish Cut-Off
The total time allowed to reach the finish line before being disqualified.
Pace to Finish
The minimum speed (km/h) required to beat the cut-offs, including aid station stops.
Start Time
Whether the race begins in the morning, evening, or at night.
Time of Day
Indicates if you will be running through the day, the night, or both.
Trajectory
Defines if the race is a single loop, a point-to-point, or an out-and-back route.

⛺ Support & Entry

Checkpoints
The total number of aid stations and the average distance between them.
Support Types
Details if the race is self-supported or provides water, food, and medical aid.
Navigation Type
Whether the course is fully marked with flags or requires map-and-compass skills.
UTMB Stones
The number of qualifying stones awarded for entry into the UTMB World Series Finals.
Entry Fee per KM
The total cost of the race divided by its distance for easy price comparison.

🌲 Environment & Beauty

Beauty Spot Rating
A star rating based on the scenic landmarks and views along the route.
Mountain Ranges
The specific mountain groups the race traverses (e.g., Eryri, Glyderau).
Wilderness %
The proportion of the course that takes place in wild, unmanaged natural habitats.
Avg Temp
The typical temperature expected during the month the race is held.