July 12, 2025
|
Eryri (Snowdonia) National Park
XTERRA Trail Run World Championship

Trail Half Marathon

Trail Half Marathon

RUN 21K
Note
The information on this page is not yet confirmed, and may be based on the previous years' edition.

One of the toughest half marathons in the UK and now the decider of the 2025 Trail Half Marathon World Championship. This iconic course takes on over 1192m of ascent across 21K, most of which is up Wales’ highest peak - Yr Wyddfa (Snowdon). The views are as stunning as the trails are challenging, with those returning fastest in their age division awarded the title of 2025 XTERRA Trail Half Marathon World Champion.

Registration opens on
Nov 19
Registration Closes on
Jul 11
Registration Closed

COURSE MAPS

This courses below are not yet confirmed, and subject to change.
Run Course
This is one tough Half Marathon with over 1192m of ascent most of which is up Wales’ highest peak.
Close
This is one tough Half Marathon with over 1192m of ascent most of which is up Wales’ highest peak. The hills start almost immediately as you climb up through Llanberis and then Maesgwm, also known as Telegraph Valley. Turning left onto the Snowdon Ranger Path you have a further steep climb up before crossing the railway, reaching the Finger Stone and starting your descent down the Llanberis Path. The views are incredible all the way to Anglesey, but don’t get complacent you haven’t finished yet. Once back down at the road in Llanberis you are diverted through the woods past Dolbadarn Castle with the sting in the tail being the final climb up the infamous Zig Zag path and into the quarries. Reaching the top of Vivian Quarry you’ll be able to see the event village and the finish line down below and better yet, its pretty much all down hill to the finish from here.

sChedule

This schedule is not yet confirmed, and subject to change.
1
Fri 2025.07.11
+
2
Sat 2025.07.12
+

prizes

This information is not yet confirmed, and subject to change.

🏅 Medal

All Finishers

28

WC Titles

€ 3,200

Prize Purse

Total Prize Purse

Position Women Men
1 €1.000 €1.000
2 €400 €400
3 €200 €200

FEES

The fees below have not yet been confirmed, and are subject to change.

RACE FEES

Description Fee
Standard rate £100

RULES & INFO

The information below may be from a previous edition of the event, and is subject to change.

*** Please note this race is for qualifiers only. Refer to the qualification rules ***

Minimum age: 17

CUT-OFF TIME:

14:30 - Mile 11 - Zig Zags roundabout feed station

FEED STATIONS:
Water and High 5 energy drink and gels will be available at 2 and 11 miles.

There will be an emergency water station at mile 7 (Clogwyn Station).
There will be limited supply here so please only take water if absolutely necessary. We are unable to re-fill water containers at this point.

COMPULSORY KIT:

All competitors must carry the compulsory kit listed below. This kit is for your safety due to the often unpredictable and quickly changing mountain conditions and isolated nature of the route.

Spot checks will be in place and anybody found without the required kit will not be allowed to race.

  • Waterproof jacket & trousers - with taped seams and integrated attached hood.

  • Suitable off-road running shoes - fell/trail shoes

  • Hat and Gloves (head and hand cover)

  • Whistle

  • Emergency food

  • Foil blanket

  • Drinking water

  • Mobile telephone

ADDITIONAL PERMITTED / ADVISORY KIT:

  • GPS device (watch with route downloaded)

  • Extra long-sleeved warm layer

  • Compass & map (If you know how to use them)

  • Poles (we permit people to use poles)

  • Suntan lotion


WORLD CHAMPIONSHIP QUALIFICATION
The XTERRA Trail Run World Championship is an annual, invite-only event in which participants must qualify by winning age group slots at qualifying events.

XTERRA Trail Run World Championship: https://www.xterraplanet.com/event/xterra-trail-run-world-championship

QualificationRules: https://www.xterraplanet.com/race-rules/trail-run-world-championship-qualification

POINTS STRUCTURE AND SERIES RANKINGS
Perhaps most significant for those not pushing for a championship crown, the series is also underpinned by the XTERRA Trail Run World Series Ranking - a custom points system that takes into account position, participation, distance, and segments to allow runners to compete individually, regionally, and internationally.

Rankings: https://rankings.xterraplanet.com/trail-run-world-series.php

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