Slieve Binnian
About Slieve Binnian
Slieve Binnian is one of the most dramatic peaks in the Mournes, famous for its granite tors and 'back castles'. The summit ridge provides some of the finest walking in Northern Ireland.
Height & Prominence of Slieve Binnian
Slieve Binnian stands at 747 metres (2451 feet) above sea level, according to Ordnance Survey data. Its topographic prominence is 407 metres, meaning it rises at least that far above the col connecting it to the nearest higher peak. Slieve Binnian is part of the Mourne Mountains. The OS grid reference is J320234, which you can use to locate the summit on any Ordnance Survey Explorer or Landranger map.
Slieve Binnian carries the classification of Marilyn.
Location & Nearest Towns
Slieve Binnian is located in Northern Ireland, Down, within Mourne Mountains AONB. It sits in the Mourne Mountains area. The nearest towns and villages include Silent Valley, Annalong, Kilkeel, 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
- Famous for dramatic granite tors called the 'back castles'
- Overlooks the Silent Valley Reservoir
- One of the most photographed mountains in the Mournes
- The Mourne Wall crosses its summit
- Popular for scrambling on the granite outcrops
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 Binnian
Slieve Binnian is a moderate walk that rewards careful planning. The summit sits at 747m, 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 — Silent Valley — 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
- Kilkeel town centre restaurants
- The Kilmorey Arms
Frequently Asked Questions
Is Slieve Binnian one of the best mountains to climb in the UK?
Yes, Slieve Binnian is considered one of the best mountains to climb in the UK thanks to its scenic routes, 747m elevation, and moderate difficulty level.
What difficulty level is Slieve Binnian?
Slieve Binnian has a difficulty rating of Moderate. Various routes are available for different experience levels.
When is the best time to climb Slieve Binnian?
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 Binnian?
Slieve Binnian stands at 747m (2451ft) 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 Binnian? These peaks are close by and worth exploring.
