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Y Marilyns

Y Marilyns

by Doug Colton

0 ratings
3 reviews
🌟 Lifestyle
💪 Health & Fitness
Free

Details

  • Released
  • Updated
  • November 27, 2022
  • July 12, 2026

Features

Developer

Doug Colton
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About

Challenge yourself to climb the 159 Welsh Marilyns, hills defined by their height above the surrounding land. Track your ascents with a personal log and an interactive map. Discover these unique geographical features.

✓Climb 159 Welsh Marilyns
✓Track progress
✓Personal log
✓Interactive map
✓OpenStreetMap data
Show original description

What's New in Y Marilyns

5.1

July 12, 2026

Option for the map to stay rotated to your heading Wording for the hils is now selectable e.g. to copy a grid reference

User reviews

Most RecentHighest RatedLowest Rated

Great free app

Does exactly what it says: provides details of the MARILYNS of Wales. I’ve seen some reviews commenting that hills are missing snd sadly they don’t seem to have read what they have downloaded. For a free app I highly recommend
raven_groupraven_group

Incomplete

So many missing off this
kabbykabskabbykabs

Many missing hills

I don’t know what ‘prominent’ in your opinion is.. to include Tal y Fan but not Drum or Foel Fras? Or why not Pen Yr Ole Wen? Quite ‘prominent to their surroundings’. Feels like some strange criteria for hills in North Wales. Won’t use as it doesn’t count so many great welsh mountains.
Sa7tnSa7tn

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FAQ

What are Welsh Marilyns?

Welsh Marilyns are hills in Wales that are at least 150 meters higher than the surrounding land. This classification was created by Alan Dawson in his 1992 book 'The Relative Hills of Britain'.

What features does Y Marilyns offer?

Y Marilyns allows you to track your progress on climbing the 159 Welsh Marilyns. It includes a personal log to record your ascents and an interactive map powered by OpenStreetMap.

Is Y Marilyns free to use?

Yes, Y Marilyns is completely free to download and use. There are no in-app purchases or advertisements.

What devices is Y Marilyns available on?

Y Marilyns is available on iPhone, iPad, and iPod. It is designed for iOS devices.

How often is Y Marilyns updated?

The latest version of Y Marilyns is 4.6.3, and it was last updated on October 13, 2025. This indicates regular maintenance and potential feature additions.

What is the age rating for Y Marilyns?

Y Marilyns has an age rating of 4+. This means it is suitable for users of all ages, with no mature content.

Who developed Y Marilyns?

Y Marilyns was developed by Doug Colton and is brought to you by the Relative Hills Society. The walk descriptions are also provided by the Relative Hills Society.

Does Y Marilyns work offline?

The description does not explicitly state offline functionality. However, it mentions an interactive map from OpenStreetMap, which may require an internet connection for real-time use.