Sat
24
Oct
2026
Marathon Eryri
Llanberis, GwyneddWAL
Eryri (Snowdonia)
Marathon· Road
Marathon Eryri — Llanberis, Gwynedd, Wales.
EventsFind this location on a map 4 editions
WALRunningTrail (provisional)22K · 22 km / 13.7 mi24.5K · 24.5 km / 15.2 mi25.4K · 25.4 km / 15.8 mi25K · 25 km / 15.5 mi
Ultra-Trail Snowdonia by UTMB® — ERYRI 25K
Llanberis, Gwynedd · WAL
No future date listed
About Ultra-Trail Snowdonia by UTMB® — ERYRI 25K
Ultra-Trail Snowdonia by UTMB® — ERYRI 25K is a running event in Llanberis, Gwynedd, Wales. Recorded disciplines include 22K, 24.5K, 25.4K, 25K. The listed surface is trail (provisional). No future date is currently listed on ATHRECS. The ATHRECS archive includes editions from 2023 to 2026. This describes the editions recorded here, not the event's founding date or complete history.
Athlete profiles
Explore some of the athletes with recorded results at Ultra-Trail Snowdonia by UTMB® — ERYRI 25K.
Dates, starts & entry
Times are local to the race. Select the entry route for your distance.
The next date has not been announced here. Check the race website for updates.
Location & race day
Listed venue / area
Llanberis, GwyneddWAL
Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.
About the race
Historical course record. Trail classification is provisional, based on inclusion in the UTMB Index; course surface has not been independently verified. Actual course distances are retained separately from UTMB Index categories.
- Surface:
- Trail (provisional)
Results
Public-figure or athlete-approved ATHRECS results, plus verified organiser links.
Sun, 17 May 2026
22K · 22 km / 13.7 mi
Sun, 18 May 2025
24.5K · 24.5 km / 15.2 mi
Sat, 11 May 2024
25.4K · 25.4 km / 15.8 mi
Sat, 13 May 2023
25K · 25 km / 15.5 mi
Past races
22K · 22 km / 13.7 miFinishedResults
Sun, 17 May 2026
Historical UTMB source record. Trail classification provisional. Ascent 1100 m. UTMB Index category 20K is not the course distance.
24.5K · 24.5 km / 15.2 miFinishedResults
Sun, 18 May 2025
Historical UTMB source record. Trail classification provisional. Ascent 1310 m. UTMB Index category 20K is not the course distance.
25.4K · 25.4 km / 15.8 miFinishedResults
Sat, 11 May 2024
Historical UTMB source record. Trail classification provisional. Ascent 1372 m. UTMB Index category 20K is not the course distance.
25K · 25 km / 15.5 miFinishedResults
Sat, 13 May 2023
Historical UTMB source record. Trail classification provisional. Ascent 1300 m. UTMB Index category 20K is not the course distance.
More running nearby
Sat
23
Jan
2027
Fri
14
May
2027
Eryri by UTMB®
Llanberis, GwyneddWAL
100K / 100M / 20K / 50K / Ultra· Trail
Eryri by UTMB® — an official UTMB World Series Event.
UTMB World Series EventSat
10
Jul
2027
Snowdonia Trail Marathon Eryri
Llanberis, GwyneddWAL
13.2mi / 27.2mi / 44.1K / 9.8K· Trail
Snowdonia Trail Marathon Eryri in Llanberis.
Date
TBC
Ultra-Trail Snowdonia by UTMB® — Eryri 50K
Llanberis, GwyneddWAL
50K / 51.4K / 55.6K / 55K / 56K / 57.7K· Trail (provisional)
Historical results collected from the UTMB Index.
6 past editions
Race detailsDate
TBC
Pedol Peris 2026
Llanberis, GwyneddWAL
Padarn Lake Hotel
17.5mi / 8.2mi· Fell
Pedol Peris 2026 — an officially published 17.5mi race at Padarn Lake Hotel.
Date
TBC
XTERRA Snowdonia Trail Marathon Eryri — SNOWDONIA TRAIL ULTRA MARATHON ERYRI, STOPPED, SHORTENED
Llanberis, GwyneddWAL
43.2K· Trail (provisional)
Historical results collected from the UTMB Index.
1 past editions
Race detailsDate
TBC
Ultra-Trail Snowdonia by UTMB® — UTS 100M
Llanberis, GwyneddWAL
163K / 164.4K / 168K / 169.7K· Trail (provisional)
Historical results collected from the UTMB Index.
4 past editions
Race details