Ariel drone view of mountainous landscape with rolling clouds flowing over peak

Journal your hikes and share your adventures.

Bag peaks across the UK & Ireland, track your progress and see updates from Donder's growing community of hikers.

Donder's profile view available to users after sign-up, shows example user with progress tracking, hiking journal and user leaderboard

Thumbnail image for Great Treffgarne Mountain showing contour plot for surrounding peak
WLS
Icon of location pin
166m
Icon of vertical, double ended, arrow to symbolise height of mountain

Great Treffgarne Mountain

Icon of mountain used to symbolise the number of ascents made by users

0
Ascents

Thumbnail image for Esgair Greolen showing contour plot for surrounding peak
WLS
Icon of location pin
501m
Icon of vertical, double ended, arrow to symbolise height of mountain

Esgair Greolen

Icon of mountain used to symbolise the number of ascents made by users

0
Ascents

Thumbnail image for Marial Gwyn (Foel Goch) showing contour plot for surrounding peak
WLS
Icon of location pin
520m
Icon of vertical, double ended, arrow to symbolise height of mountain

Marial Gwyn (Foel Goch)

Icon of mountain used to symbolise the number of ascents made by users

0
Ascents

Thumbnail image for Pen y Castell [Anglesey and the Lleyn Peninsula] showing contour plot for surrounding peak
WLS
Icon of location pin
169m
Icon of vertical, double ended, arrow to symbolise height of mountain

Pen y Castell [Anglesey and the Lleyn Peninsula]

Icon of mountain used to symbolise the number of ascents made by users

0
Ascents

Thumbnail image for Fron Hill showing contour plot for surrounding peak
WLS
Icon of location pin
328m
Icon of vertical, double ended, arrow to symbolise height of mountain

Fron Hill

Icon of mountain used to symbolise the number of ascents made by users

0
Ascents

Thumbnail image for Cerrig Gwynion showing contour plot for surrounding peak
WLS
Icon of location pin
527m
Icon of vertical, double ended, arrow to symbolise height of mountain

Cerrig Gwynion

Icon of mountain used to symbolise the number of ascents made by users

0
Ascents