XTERRA Snowdonia Trail Marathon

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10 +

Booked 11 times in the last week
£29.99 - £86.94Free injury protection
Compete within the shadow of England and Wales' highest peak, Snowdon. Great for experienced athletes looking for a new challenge, this mixed-terrain course will take athletes around and up the famous mountain. Come for one of the UK's most testing trail runs and the great event atmosphere.
Ultra Marathon, Marathon, Half Marathon, and 1 more
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Sun 10th Jul 2022
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Caernarfon, United Kingdom
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(4 Reviews)
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The event experience

Based on 2,500 participants


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20 to 50m elevation gain per km

Where and when
Caernarfon LL55 4UR, UK
Start times
Ultra Marathon:
6:30am |
8:30am |
Half Marathon:
9:45am |
Races summary
Here's what races are available for XTERRA Snowdonia Trail Marathon
Route information
The Snowdonia Trail Marathon consist of four different events:
  • Ultra Marathon: 59.8k
  • Trail Marathon: 27.3 Miles
  • Half Marathon: 12.9 Miles
  • 10k
Arguably one of the UK's most challenging trail races, all four races will experience the the truly spectacular surroundings of Snowdonia National Park.
Perfect for all runners, the 10k route is a mixture of road, track and trail, and takes in all the stunning lower slopes of Snowdon. The route then takes runners across the valley, dipping into picturesque woodlands around Dolbadarn Castle, before enduring the gruelling zigzags taking you to the top of Vivian Quarry. From here, it's all back downhill to the finish line along stunning forest trails.
Half Marathon
Boasting over 1192m of ascent up one of Wales' highest peaks, this is one tough half marathon. Right off the start line the route tackles some hills up Llanberis and then Maesgwm, better known as Telegraph Valley.
From here, the route turns left onto the Snowdon Ranger Path for another steep climb. Once reaching the Finger Stone, runners can enjoy the mountainous views along the descent back down the Llanberis Path.
Once back at the road the route diverts through the woodlands past Dolbadarn Caslte with the sting in the tail being the final climb up the infamous Zig Zag path and into the quarries.
Once at the top of Vivian Quarry, the event village is in sight, and its all downhill to the finish from here.
If you're looking for a challenge...you're in the right place. Ascending 1,685 metres over 27 miles of iconic and spectacular trails, this epic race will circumnavigate and eventually climb Wales' highest peak - Snowdon.
This beautiful route show off Wales' stunning trails, panoramic views, and tough climbs, and truly display why Snowdonia National Park is a mecca for outdoor enthusiasts.
The route visits Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass and Snowdon (via the PyG Track to the Finger Stone) before descending to the finish line along the Llanberis Path.
Ultra Marathon
The Ultra route starts alongside the Marathon route up to Maesgwm with epic views of Snowdon. From here, the route drops down towards Rhydd Ddu and travels towards Beddgelert Forest.
From here, the Ultra breaks from the Marathon route to explore the beautiful Cwm Tresgl and Cwm Pennant. Next, runners will rejoin the Marathoners along Afon Glaslyn and Llyn Gwynant to the ascend up Snowdon to the Finger Stone via the PyG track.
A welcome descent down Snowdon along the Llanberis Path awaits as runners race down to the finish line. A paradise for trail runners, theres mountains, forest, stone paths, slate quarries, and tracks to keep you motivated the whole way.
Organiser route images
What's included
  • Great event village
  • Fully distance-marked
  • Refreshment stations
  • Live music at the village
  • Chip-timed results
  • Official event photography
  • On-site first aid
  • Free massage
  • Finisher's medal
  • Post-race goody bag
  • Free Event T-shirt
How to get there
Caernarfon LL55 4UR, UK
Get full directionsExternalLink
By Train
Direct services (including Virgin Trains from London to Bangor) take you to the popular North Wales coastal destinations from most parts of Britain. Make inland connections via the Conwy Valley Line which runs through the Snowdonia National Park to Betws-y-Coed and Blaenau Ffestiniog. Services from the Midlands through Shrewsbury and Machynlleth link up with the Cambrian Line.
The closest station to Llanberis is Bangor, which is just under 10 miles away. A taxi from here will cost approximately £20 or the number 85 bus will take you from the station and cost between £3-£5. It is possible to cycle.
The Bangor to Llanberis bus timetable can be viewed hereExternalLink.
By Car
There's easy access from the North West along the M65 and A55. Motorway links with the Midlands are good too, and the same roads – the M6, M5 and M1 – also bring Snowdonia within easy reach of the South of England.
Parking information will be available in the final raceday instruction pack sent out before the event.
By Sea
There are ferry services which run regularly from Holyhead to Dublin. Please make your own arrangements if you plan to travel by ferry.
By Plane
Transfers from the international airports of Manchester, Liverpool, and Birmingham take less than 2 hours. Please make your own arrangements when travelling this way.
There are a number of accommodation options in the area surrounding the event. Always Aim High recommend The Royal Victoria HotelExternalLink which is within easy walking distance of the event site.
The Padarn HotelExternalLink is also a short walk from the event and is just 100m from the lakefront.
It is recommended that entrants book their accommodation early and mention the Snowdonia Trail Marathon when booking their stay.
Event day logistics
06:30 Ultra Marathon Starts
08:30 Trail Marathon Starts
09:45 Half Marathon Starts
10:15 10k Starts
18:30 Finish line closes
Registration will take place during the day on Saturday and before the race on Sunday morning. It is usually located on the event field in Llanberis situated next to the Community Centre - LL55 4UR.
On the morning of the race, registration closes no later than 15 minutes before the race start.
Confirmed weekend timings and locations will be detailed in your final instructions which will be available on the website and via email 10 days prior to the race.
Race Packs
Race packs can either be posted to entrants 2 weeks before the event for £1.95 or collected from registration at the event site. Please select the option for postage at registration if you wish to have it sent to you.
Age Requirements
All entrants must be the following ages to enter each race:
  • 10k - 17 and older
  • Half Marathon - 17 and older
  • Marathon - 18 and older
  • Ultra Marathon - 20 and older
Compulsory Kit List
All competitors must carry the compulsory kit listed below for the Half Marathon, Marathon, and Ultra Marathon events. 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.
  • Wind proof full body cover - windproof jacket windproof trousers with full lengths arms and legs
  • Suitable off road running shoes - fell/trail shoes
  • Hat and Gloves (head and hand cover)
  • Whistle
  • Emergency food
  • Bumbag/race vest
  • Foil blanket
  • Spare water
  • Suntan lotion
Additional/Advisory Kit
  • GPS device (watch with route downloaded)
  • Mobile telephone
  • Extra long sleeved warm layer
  • Compass & map (If you know how to use them)
  • Poles (we permit people to use poles)
Cut Off Times
There is a compulsory cut off times to safeguard the well being of both athletes and our marshals. Athletes arriving after these times will be offered the choice of returning by foot to the event village or waiting for a shuttle vehicle. Buses to Llanberis are £1.50 should you wish to use them.
Ultra Marathon: 12 Hours
  • 11:40 - Runners must get to the Beddgelert Feed Station at mile 20.5 by this time. This allows for an average speed of 4mph
  • 14:20 - Runners must get from Beddgelert to Pen y Pass at mile 28.67 by this time. This allows for an average speed of 3mph.
  • 18:30 - Runners must get from Pen y Pass to the Finish Line before this time, as this is when the finish line closes. This allows for an average speed of 2pmh.
Marathon: 9 Hrs 30 Mins
  • 10:30 - Runners must get to the Rhydd Ddu feed station at mile 6.1 by this time. This allows an average speed of 4mph.

  • 11:40 - Runners must get to the Beddgelert feed station at mile 11.4 by this time. This allows an average speed of 4mph.

  • 14:20 - Runners must get from Beddgelert to Pen y Pass at mile 19.5 by this time. This allows for an average speed of 3mph.

  • 18:30 - Runners must get from Pen y Pass to the Finish Line before this time. This allows for an average speed of 2pmh.
For Marshal Welfare, Half and 10k runners will need to finish within the following times.
Half Marathon: 6 Hrs 30 Mins
10k: 2 Hrs 30 Mins
Always Aim High Events's logo
Always Aim High Events
Always Aim High Events was founded in 2010 by Tim Lloyd and Nigel 'Kenny' Kendrick. The first event was the now iconic Slateman Triathlon 2011 attracting just over 400 competitors (it now regularly exceeds 1,000), with a vision that included the Snowman and Sandman - the three events which now make up the Adventure Triathlon Series. From that one event we now host 34 all inclusive events over 9 weekends, with many more planned for 2019 and beyond. In 2015 Always Aim High Community Events was set up as a not for profit organisation to help with engaging with and hosting local community events. At Always Aim High we are extremely proud about delivering the UK's ultimate triathlon, cycling, running and swimming challenges in the most beautiful and iconic locations that we can find. From epic mountain, coastal and city triathlons, to breathtaking cycle sportives which cover the length and bredth of Snowdonia, there's something for everyone at Always Aim High Events!
View more Always Aim High Events events
Spectator Info
The event village is family-friendly and all the events are held in locations with lots on offer for families. Always Aim High pride themselves on creating a great atmosphere for spectators who can track the person they are supporting using an app so they don't miss them at key points.
Is there an age limit to enter the Snowdonia Trail Marathon?
All 10k and Half Marathon runners must be 17+ and Marathon/Ultra runners must be 18+.
When is registration for the Snowdonia Trail Marathon?
The registration process can be completed on either the Saturday afternoon before the event or the Sunday morning of the race.
Where can I access results from the Snowdonia Trail Marathon?
Race times will be posted live as well as uploaded online after the event.
When will I receive my final instructions for the Snowdonia Trail Marathon?
Final race instructions will be sent out to entrants 10 days before the event.
How will I receive my race pack for the Snowdonia Trail Marathon?
Race packs can either be posted out to entrants for £1.95, or you can pick your pack up from registration at the event village.
Is there compulsory kit I have to bring to the Snowdonia Trail Marathon?
Yes, there is a compulsory kit list for the event which is detailed in the raceday section of this event page.
Are there cut-off times for the Snowdonia Trail Marathon?
Yes, there are cut-off times for each of the events which are detailed in the raceday section of this event page.
Will there be nutrition at the Snowdonia Trail Marathon?
Yes, water, energy drinks, and gels will be available at drinks stations which are detailed in the online maps. The most accurate information will be available in your final raceday instructions posted out 10 days before the event.
Can I use walking poles at the Snowdonia Trail Marathon?
Yes, walking poles are permitted.
Can I wear headphones at Snowdonia Trail Marathon?
Only the use of bone conducting headphones are permitted, any other headphones are not.
Is there somewhere to park at the Snowdonia Trail Marathon?
Parking information will be available in the final raceday instruction pack.
How do I find my race photos from the Snowdonia Trail Marathon?
If you purchased a photograph package you should have received an email with a reference number and information on how to find and download your images. Photos taken on the day and available for purchase can be viewed at Mel Parry Photography.
Is there live tracking at the Snowdonia Trail Marathon?
Live tracking is provided by our timing partners TDL. To access the live tracker, download the app or access their website using the link that will be in your final instructions.
4 reviews
Did the Marathon in 2019
Brilliantly brutal event. Nothing prepared me for "running" up a mountain. The "path" up was anything but, I'd call it scrambling although I'm sure experienced people wouldn't! One you must do, but probably only once! The aid stations were pretty poor with only fruit and gels at some stations. This would have been very basic for a normal rod marathon let alone a tough one that took me 8hr30 - the guys and girls doing the ultra would have had the same.
Did the Half Marathon in 2019
Buzzin’,as I ended up on the podium! 😉. Had my folks and wife with me to witness my greatest achievement yet. The set up was fantastic,everyone was super friendly,would definitely go to another event by Always Aim High 👊.
Did the Marathon in 2019
A stunning route with a mix of challenges. Very well organised and route is well marked out. My knee went quite early on so I had to walk the final 13miles!The climb up to the summit is beautiful, busy with walkers also but we just pushed them off the mountain (joke!). We were very fortunate with the weather, it wasn’t too hot or too cold, I ran the whole race without the need to pull on a long sleeve top or remove layers. The aid stations are well placed out but I strong recommend ensuring you can carry at least 1 litre of water plus electrolytes, I found I was refilling my bottles at the final 2 (or 3 aid stations). Fantastic support from spectators or walkers passing by, the marshalls were very friendly and encouraging too - big up to Beddgelert Marshall ‘Sean’ for walking the final mile with me. A very painful downhill descent and finally crossing the line in 8hrs 15mins led to a very emotional finish, but so worth it!
Did the Marathon in 2019
Excellent event. Well marshalled with plenty of water stations. Friendly, supportive atmosphere. Good organisation.
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£29.99 - £86.94Free injury protection

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