Compare Trail Ultra Marathon Races

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Race Name Ultra-Trail Snowdonia UTS 100KM by UTMB Ultra Marathon Race in May 2026 near Llanberis Ultra-Trail Snowdonia UTS 100KM by UTMB Ultra Marathon Race in May 2025 near Llanberis
Landscape eryri snowdonia landscape eryri snowdonia landscape
Difficulty Score
Distance 98km 102km
Elevation 4633metres 6494metres
kilometer effort 144km-effort 165km-effort
General Info

General Info

General Info

Month May May
Organiser UTMB UTMB
Town/City Llanberis Llanberis
County State Gwynedd Gwynedd
Country Wales, United Kingdom Wales, United Kingdom
Continent Europe Europe
National Park Name Eryri / Snowdonia Eryri / Snowdonia
Distance and Elevation

Distance and Elevation

Distance and Elevation

GPX File 2026 UTS 100KM by UTMB GPX Route File UTS 100KM by UTMB GPX Route File
Ground Type trail trail
Elevation Type mountainous mountainous
Lowest Elevation 9metres 57metres
Max Elevation 990metres 1061metres
Elevation Profile
Elevation Per KM 47m/km 64m/km
Average Altitude 300metres 400metres
Distance Type 100km / 62 miles 100km / 62 miles
Steepest Downhill Amount 51% 51%
Steepest Hill 50% 50%
Uphill Amount 48% 45%
Flat Amount 6% 5%
Downhill Amount 45% 50%
Trajectory Difference 0 metres 0 metres
Trajectory same same
Climbing

Climbing

Climbing

Categorised Climb Amounts 13 19
Categorised Climb Every KM 7km 5km
Categorised Climbs Total Length 38.00km 37.30km
Average Categorised Climb Length 2.33km 1.96km
Percent of Race Categorised Climbs 38% 37%
Average Categorised Climb 2.92/4 2.84/4
Categorised Biggest Climb Length 6.40km 6.40km
Cat Biggest Climb Elevation 878metres 879metres
Average Categorised Climb Elevation 276metres 319metres
Navigation and Route

Navigation and Route

Navigation and Route

Direction Type loop loop
Navigation Type fully marked course fully marked course
Mountain Ranges eryri / snowdonia, carneddau, Glyderau eryri / snowdonia, carneddau, Glyderau
Long Distance Route
Timing and Cut-offs

Timing and Cut-offs

Timing and Cut-offs

Days 2 2
Days Type multi day non stop multi day non stop
Start Time morning morning
Finish Cut-Off Time 30hours 32hours
Time Between CPs 4 hours 4 hours
Time of Day day and night time day and night time
Time of Week weekend weekend
Pace Speed to Finish 3.26kmh 3.15kmh
Checkpoints and Support

Checkpoints and Support

Checkpoints and Support

Support Types checkpoints - aid stations checkpoints - aid stations
Checkpoints Amount 7 7
Checkpoints /100km 7.14checkpoints/100km 7.00checkpoints/100km
Checkpoints Distance 14km 15km
Sleep Type trail nap trail nap
Environmental Conditions

Environmental Conditions

Environmental Conditions

For The Trail
Average Temp 11c 11c
Temperature cool cool
Biodiversity Ranking 142/201 142/201
Season spring spring
Participants and Entry

Participants and Entry

Participants and Entry

UTMB Stones 3 stones 3 stones
Participant Amount 900 900
Entry Type pay to race pay to race
Entry Fee £239 £239
Entry Fee Per KM £2.39/km £2.39/km
Average Yearly Price Increase
Performance and Difficulty

Performance and Difficulty

Performance and Difficulty

DNF Rate 36% 36%