Includes all mountains and hills with at least 150 m prominence in Wales. Now with 158 peaks, this peak challenge has been updated over the years since created by Alan Dawson in his 1992 book "The Relative Hills of Britain". Thanks to peakery member Mark Trengove for maintaining on peakery.
Highest peak
Snowdon
3,560 ft / 1,085 m
Most prominent peak
Snowdon
3,406 ft / 1,038 m prom
Most climbed peak
Moel Fama
1,640 climbs
Most difficult peak
Waun Fach
Class 1
Difficulty breakdown
Class 1/2 55 peaks
Class 3/4 4 peaks
Highlights
- Climb the highest and most prominent peaks in Wales
- Explore the finest hills throughout the principality
- Marvel at the complex geology of the country
- Visit Wales' largest islands
- Enjoy the sea views from the coastal hills.
Latest climbs
"Nice one along a section of the 'Sarn Helen' Roman road. Want to come back to this one for a longer explore from the West. I came in from 51°46'18.5"N 3°39'27.7"W - parked outside the 'Dove Workshop' centre." — adventure-stricken • Sep 26, 2026
"I had planned a 12-mile route a few months ago for this, starting at the waterfall in the south. However, I had wild camped the previous 2 nights near Pen Y Fan and decided to tick off 3 Welsh Marilyn's before heading home. This meant I ended up taking the shortest possible route. The weather was perfect, and only see two hikers and two mountain bikers. The zip world launch tower is nearby, so don't be alarmed by any screams now and again ;-) " — adventure-stricken • Sep 26, 2026
"4th and final Welsh Marilyn of the day! Wasn't my planned 'loop' route starting from the fort near Carn Goch, due to no available parking spaces. Not a bad one, with some great views of 'The Black Mountain '. You can see the entire ridge from Tair Carn Isaf, across to Garreg Lwyd, Foel Fraith and Garreg Las. Brought back fond memories of my early days ticking off all those Nuttalls. " — adventure-stricken • Sep 6, 2026
"2nd Welsh Marilyn of the day. What began as a nice trail through the forest soon ended and turned into my usual off-trail adventure towards the north end, where the trail ends and you have to fight your way through the 'wild'. Decided to take the road back to the car." — adventure-stricken • Sep 6, 2026
"Another Sunday Welsh Marilyn's mission. This was the 1st of the day. Took the opportunity to do an extended route and take in the trig point and true summit of Mynydd Y Betws. Seems to be conflicting info in terms of the two summits, Mynydd Y Betws and Mynydd y Gwair, when researching online. Going by OS maps, the two summits do not have the same heights. That's obvious when you get out there! If you're not a 'purist', you could just cheat and park up on the road and spend a few minutes walking to the Marilyn summit. I like to try and work for it a bit; otherwise, it just feels like cheating ;-)" — adventure-stricken • Sep 6, 2026