Slieve Commedagh
About Slieve Commedagh
Slieve Commedagh is the second highest peak in Northern Ireland. The famous Mourne Wall climbs its slopes, and the summit provides outstanding views across the Mournes.
Height & Prominence of Slieve Commedagh
Slieve Commedagh stands at 765 metres (2510 feet) above sea level, according to Ordnance Survey data. Its topographic prominence is 215 metres, meaning it rises at least that far above the col connecting it to the nearest higher peak. Slieve Commedagh is part of the Mourne Mountains. The OS grid reference is J327278, which you can use to locate the summit on any Ordnance Survey Explorer or Landranger map.
Slieve Commedagh carries the classification of Marilyn.
Location & Nearest Towns
Slieve Commedagh is located in Northern Ireland, Down, within Mourne Mountains AONB. It sits in the Mourne Mountains area. The nearest towns and villages include Newcastle, Slieve Donard, Mourne Wall, and others, where you can find accommodation, pubs, and supplies before or after your walk.
For official access information and any seasonal restrictions, check the Mourne Mountains AONB authority.
Interesting Facts
- Second highest peak in Northern Ireland
- The Mourne Wall passes over its shoulder
- Name means 'mountain of watching' in Irish Gaelic
- Often combined with Slieve Donard in a classic ridge walk
- Part of the Ulster Way long distance footpath
Safety Tips
Always check forecasts before setting out. Summit conditions differ dramatically from valley level.
Carry map, compass/GPS, water, food, first aid, whistle, torch, and waterproofs.
Tell someone your route and return time. Stick to marked paths. Be ready to turn back.
Ask for Police, then Mountain Rescue. Know your grid reference.
On the Mountain: Walking Slieve Commedagh
Slieve Commedagh is a moderate walk that rewards careful planning. The summit sits at 765m, where conditions can feel distinctly different from the valley — wind speeds are typically 30–50% stronger above 800m, and the temperature drops roughly 1°C for every 100m of ascent. In cloud, the cairn at the top can be hard to spot, so keep a map and compass to hand even on well-marked paths.
After your walk, the nearest village — Newcastle — is a good place for a pint and a debrief. For detailed route descriptions and trip reports from other walkers, Walkhighlands NI is an excellent resource.
Nearby Dining
- The Anchor Bar, Newcastle
- Donard Hotel
Frequently Asked Questions
Is Slieve Commedagh one of the best mountains to climb in the UK?
Yes, Slieve Commedagh is considered one of the best mountains to climb in the UK thanks to its scenic routes, 765m elevation, and moderate difficulty level.
What difficulty level is Slieve Commedagh?
Slieve Commedagh has a difficulty rating of Moderate. Various routes are available for different experience levels.
When is the best time to climb Slieve Commedagh?
The best season is Spring to Autumn. Summit temperatures are typically 5–10°C colder than the valley, and conditions can change rapidly.
Why Visit Slieve Commedagh?
Slieve Commedagh stands at 765m (2510ft) in Northern Ireland, Down. Classified as a Marilyn, it is a rewarding destination for hikers, climbers, and photographers.
Browse our UK mountains directory to discover more peaks, or see all mountains A–Z.
Nearby Peaks to Explore
Looking beyond Slieve Commedagh? These peaks are close by and worth exploring.
