Cadair X

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Take on one of the toughest half marathon routes in the UK with the Cadair X. This mountain race takes runners through woodland, past glacial lakes, along historic trails and up some serious mountain peaks including Cadair Idris. With 1150m of height gain over 21k, step up to your next challenge.
Half Marathon
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Sat, 2 Jul 2022
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Tywyn, United Kingdom
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(1 Review)
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Ty`n-y-cornel, Tywyn LL36 9AQ, UK
Start times
Sat, 2 Jul 2022
Half Marathon:
Here's what races are available for Cadair X
Total height gain: 1100m.
This will be a challenging route starting and finishing at the Tyn-Y-Cornel Hotel. The route follows a steady path along the mountain then enters the Cadair Idris National Nature Reserve.
There first 6k will see the most serious incline, with the 4k - 6k section with the steepest ascent. The ascent continues towards Mynydd Moel before traversing west and ascending to the summit of Cadair Idris, 893m.
The most technical section of descent is just after the summit of Cadair Idris.
Organiser route images
  • Amazing mountain route
  • Well stocked aid stations
Ty`n-y-cornel, Tywyn LL36 9AQ, UK
Get full directionsExternalLink
By Car
The race HQ at the Ty'n y Cornel Hotel is located on the North side of Lake Tal y Llyn off the B4405, just off the A487 near Minffordd. The A487 runs North-South between Dolgellau and Machynlleth. You can reach the hotel via the A470 Cardiff to Llandudno, the A487 from South West Wales, the A494 to Chester and Merseyside and the A458 to Shrewsbury, connecting to the M54 and M6.
By Public Transport
The closest rail station 6 miles away in Machynlleth. This station has direct trains from London and the West Midlands.
There will be the option to camp in a local field. Camping details will follow.
08:00 - 09:40 Registration
10:00 Half Marathon starts
Check Points
  • CP1 - Left before Mynydd Moel & Cut-off point (6k)
  • CP2 - Summit of Cadair Idris (8k)
​- CP3 - Turn off from the Pony Path (10k)
  • CP4 - Mary Jones Chapel (16k)
  • CP5 - Forest (19k)
Cut-off Points
All runners will need to reach the first checkpoint in under 90 minutes from the race start or they will be asked to turn around and return to the event start.
The cut-off is in place for participant and marshal safety.
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Compulsory Kit
  • Waterproof jacket
  • Insulation layer (eg micro-fleece, down gilet)​
  • Water bottle/bladder & race-cup
  • Suitable bag for carrying kit
  • Whistle
  • Fully charged mobile phone
  • Suitable footwear
  • Map/GPS + Compass
  • Hat/buff
Is the Cadair X suitable for all runners?
This is a very technical and challenging route and suitable for experienced mountain runners.
Is there a cut-off time for the Cadair X?
Yes, all runners must make it to the first checkpoint in 90 minutes from the race start.
Do I need to bring any specific kit for the Cadair X?
All runners will need to run with; waterproof jacket, insulation layer (eg micro-fleece, down gilet)​, water bottle/bladder & race-cup, suitable bag for carrying kit, whistle, fully charged mobile phone, suitable footwear, map/GPS + compass, hat/buff.
1 reviews
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