Easy walks around the Mourne Mountains

You can enjoy the Mourne landscape without choosing a summit climb. Start with two short forest and lake routes, or consider the longer walk to Ben Crom. Compare the distance as well as the grade: easy ground can still make a long outing.

Compare the published routes
Walk	Distance	Difficulty
Tollymore Arboretum Path	~0.6 km	Easy
Castlewellan Lakeside Walk	~3.9 km	Easy
Silent Valley to Ben Crom Dam	~10 km	Easy · NI Water level one

Read each route for its start, surfaces and access. A grade is a comparison, not a guarantee of suitability.

For a short woodland outing: Tollymore Arboretum

The Arboretum Path is the short option among Tollymore’s waymarked trails. Enjoy the trees and woodland setting without committing to the park’s longer river or mountain routes.

Begin with the information board at the main car park and choose the Arboretum Path. Wear footwear suited to forest surfaces and use the park’s current trail board for the loop you intend to follow.

Arboretum Path: start and route → · More about Tollymore →

For a lake circuit: Castlewellan

Castlewellan’s Lakeside Walk follows the lake on broad forest paths. Its circular shape makes it a useful option when you want a longer stroll than the Arboretum Path, with the lake and wooded slopes keeping the landscape varied.

Use the Lakeside car park and the published trail information. Parts of the route are shared with mountain bikes, so stay aware of other trail users.

The castle beside Castlewellan Lake. Photo credit & licence

Lakeside Walk: start and route → · More about Castlewellan →

For a longer valley day: Silent Valley to Ben Crom

The Ben Crom Dam Walk follows the tarmac road through the valley from Silent Valley. It brings you into the mountain landscape without adding a summit ascent.

At about 10 km return, this is a longer walk despite the lower published grade. Leave enough energy and daylight for the journey back; choose a shorter park trail if that distance does not suit the group. Follow NI Water’s current access information and signs.

Ben Crom Reservoir beneath Slieve Bearnagh. Photo credit & licence

Ben Crom Dam Walk: distance and start → · Visit Silent Valley → · Mourne dams and reservoirs →

Choose by the whole outing

Think about the least experienced walker, the distance, surfaces, slopes and the journey home. An easy grade helps compare routes; it does not guarantee that a walk suits every person, wheelchair or pushchair.

A short route can include steps. Silent Valley’s Reservoir Trail, for example, is a shorter alternative but has NI Water’s level-two grade. Read each route’s ground and access notes rather than choosing on length alone.

Read the Reservoir Trail details → · Prepare for your walk → · Compare the forecast →

Sources & further reading

Checked 2026-10-09. Distances are rounded from the linked route catalogue. WalkNI describes Tollymore’s Arboretum Path as 0.4 miles; Forest Service describes the Blue Trail as half a mile. Use the current park trail board for your chosen loop. Original NI Water grades are retained alongside the guide’s comparison grades.

walkni.com · www.nidirect.gov.uk · walkni.com · www.niwater.com

Choose the ground that suits you

Which Mourne walks suit beginners?

Start with the short blue Arboretum Path at Tollymore or the green Lakeside Walk at Castlewellan. Both are graded easy by WalkNI.

Tollymore’s arboretum loop is around 0.6 km with gentle slopes and firm paths that have some loose material. Castlewellan’s lake circuit is around 3.9 km on relatively flat, even surfaces. Choose by the distance and terrain your group can manage; an easy grade does not promise step-free access or suitable conditions on the day.

Plan the rest of the day →

Read the source: WalkNI — Tollymore Arboretum Path · WalkNI — Castlewellan Lakeside

Can I enjoy mountain scenery without climbing a summit?

Yes. Newcastle’s coast, Castlewellan Lake and Silent Valley bring mountain scenery within reach without a summit climb.

For a short reservoir outing, choose Silent Valley’s 1.7 km return Reservoir Trail, which includes gravel and steep steps. For a longer walk below the summits, the road to Ben Crom is 10 km return. The forest walks at Tollymore offer rivers, bridges and trees instead of exposed high ground.

Explore Newcastle and nearby places →

Read the source: NI Water — Silent Valley trails · WalkNI — Castlewellan Lakeside · Forest Service / nidirect — Tollymore Forest Park

Which walks are short, relatively flat or clearly waymarked?

For the shortest marked loop, choose Tollymore’s blue Arboretum Path. For a longer, relatively flat circuit, follow Castlewellan’s green Lakeside Walk.

The red River Trail at Tollymore is about 5.3 km and has steps, roots and uneven sections; the longer black Mountain and Drinns circuit is about 14.3 km and strenuous. Silent Valley’s Reservoir Trail is short but has steep steps, while the tarmac walk to Ben Crom is easy in grade but long at 10 km return.

Plan the rest of the day →

Read the source: WalkNI — Tollymore Arboretum Path · WalkNI — Castlewellan Lakeside · WalkNI — Tollymore River Trail · WalkNI — Tollymore Mountain and Drinns · NI Water — Silent Valley trails

How do Tollymore, Castlewellan and Silent Valley compare?

Choose Tollymore for river woodland and old stone bridges, Castlewellan for a relatively flat lake circuit, and Silent Valley for reservoir engineering and mountain scenery.

Tollymore has several colour-marked circular trails, from the short arboretum loop to demanding hillside walks. Castlewellan’s 3.9 km green Lakeside Walk circles the water and is shared with an easy mountain-bike route. Silent Valley offers a short 1.7 km return reservoir trail with steps, or a 10 km return tarmac road walk to Ben Crom. Check each park’s current notices before choosing.