Ben Lui is one of those mountains that you can spot from miles away. That distinctive north-east coire — Coire Gaothach — makes it instantly recognisable as you drive through Tyndrum, a massive sculpted bowl carved into the mountainside that looks almost too dramatic to be real. Every time we’d passed it on previous trips, we’d said “we need to do that one.” On a crisp April morning, we finally got round to it.
At 1,130m, Ben Lui is the highest peak in the Southern Highlands west of Crianlarich and one of the finest-looking mountains in Scotland. It’s also been designated a National Nature Reserve for its rare arctic-alpine flora — similar to Ben Lawers further east, the calcium-rich rocks support plant species that have survived here since the last Ice Age.
This was Munro number 13 for us and it turned out to be one of the more memorable days we’ve had in the mountains so far.
Route Overview
- Ben Lui — Munro — Mountain of the Calf — 1,130m
- Total distance: 16.9km (out and back via Glen Cononish)
- Total ascent: 1,016m
- Moving time: ~4.5 hours
- Difficulty: Strenuous — long walk-in followed by sustained steep ascent
| Munro Name | Pronunciation | Translation | Height |
|---|---|---|---|
| Ben Lui | Ben Loo-ee | Mountain of the Calf | 1,130m |
The standard route approaches from the east via Glen Cononish, starting from the Dalrigh car park on the A82. A long, flat walk-in along the River Cononish is followed by a steep ascent up the south-east ridge to the summit. The route avoids the steeper ground of Coire Gaothach, which is a winter mountaineering route.
Getting There and Parking
The hike starts from the small free car park at Dalrigh, just off the A82 south of Tyndrum. There’s space for around 10 cars and it fills quickly on popular days — an early start is recommended, especially on summer weekends.
From Glasgow, the car park is about 90 minutes up the A82. From Edinburgh, allow around two hours. Tyndrum itself has shops, cafés, and accommodation if you’re making a weekend of it.
The Walk-In — Glen Cononish
From the car park, you follow the track along the River Cononish heading west. This is a long walk-in of roughly 5km on a fairly flat Land Rover track, which serves as a nice warm-up before the real climbing begins. The river and the surrounding glen are beautiful — on our day, the early morning light was catching the water perfectly and there wasn’t a breath of wind.
After passing Cononish Farm, the track starts to narrow and you begin to see Ben Lui properly for the first time. The scale of it is impressive — that enormous coire opens up ahead of you and the mountain seems to grow with every step. The walk-in is the longest of any Munro we’ve done from this area, but it’s pleasant and atmospheric rather than tedious.
The South-East Ridge — The Ascent
Where the track ends and the mountain begins, the character of the day changes completely. The ascent up the south-east ridge is steep and sustained — there’s no getting away from the fact that you’re climbing over 1,000m on this one, and after the long walk-in, your legs know about it.
We took the path that heads up the south-east ridge, which avoids the steeper and more dangerous ground of Coire Gaothach. The gradient is punishing in places, but the views behind you as you gain height are fantastic — you can see right back down the glen towards Tyndrum and beyond, with the River Cononish threading through the valley below.
Higher up, the terrain becomes rockier and the path less defined. We found ourselves picking our way through some boulder fields, but nothing too technical. The final push to the summit ridge is exposed and on a windy day it would demand extra care.
looking down from the path
Ben Lui Summit — 1,130m
The summit sits at 1,130m and the views are superb. To the east, Ben More and Stob Binnein are prominent across the Crianlarich hills. To the north, Ben Challum rises above Tyndrum. On a clear day, the views stretch west towards the coast and you can pick out the hills of Argyll.
But the most dramatic view is looking down into Coire Gaothach itself. From the summit ridge, you can peer over the edge into the massive north-east coire — in winter, this fills with snow and becomes one of Scotland’s classic winter mountaineering routes, but even in spring and summer, the scale of it is breathtaking.
We had our jam sandwiches sheltered behind the cairn and took in the panorama. Reaching the summit was a brilliant feeling — the combination of the long approach, the sustained climb, and the quality of the views made this feel like one of the most complete mountain days we’d had.
The Descent
The return follows the same route back down the south-east ridge and along Glen Cononish. The steep sections require care on tired legs, but once you’re back on the glen floor, it’s a straightforward walk back along the river to the car park.
The total distance of nearly 17km means this is one of the longer Munro days in the area. Our total time of just under 5 hours 40 minutes included a good stop at the top. Make sure you’re carrying enough food and water for the distance — there’s no shop or café along the way.
When to Climb Ben Lui
Summer (May–September) is the best time for this route. The long walk-in is at its driest and most pleasant, the south-east ridge is straightforward, and long days give you plenty of time for the distance.
Autumn (October–November) brings golden colours in Glen Cononish and often exceptional visibility. The shorter days mean you need to plan carefully given the long walk-in — you don’t want to be caught out on the return as the light fades.
Winter (December–March) is a different proposition entirely. The south-east ridge becomes a proper winter mountaineering route, and Coire Gaothach is a classic snow and ice climb that attracts experienced mountaineers. Crampons, an ice axe, and winter skills are essential. Don’t attempt the standard route in winter without the right experience and equipment.
Spring (March–April) — when we did it — can be excellent if you catch good weather. Lingering snow on the upper sections is possible, and the coire can hold snow well into May. Check MWIS forecasts carefully.
Combine With
Ben Lui is usually a standalone day given the total distance and ascent. However, experienced walkers sometimes extend the route to include Beinn a’ Chleibh (Munro, 916m), which sits on a ridge to the north-west and can be reached from the bealach without returning to the glen floor.
The Tyndrum area has plenty of other Munros for a multi-day trip. Ben Challum is accessible from a layby just up the A82, and Ben More and Stob Binnein are a short drive east along the A85. Cruach Ardrain and Beinn Tulaichean are also within easy reach.
Tips for This Route
- The walk-in is long but lovely. Don’t rush it — Glen Cononish is beautiful and you’ll need the energy for the climb ahead.
- Carry plenty of water and food. At nearly 17km, this is a full day. There’s no reliable water source on the upper mountain.
- Avoid Coire Gaothach in summer. The standard route up the south-east ridge is the safe option. The coire is a winter route and the steep ground can be loose and dangerous in dry conditions.
- Start early. The combination of long walk-in and steep ascent means you need the full day, especially in the shoulder seasons.
- The summit ridge is exposed. Wind can be fierce up here — bring a proper windproof jacket and warm layers regardless of valley conditions.
Frequently Asked Questions
How hard is Ben Lui? The long walk-in (10km round trip on flat ground) combined with over 1,000m of ascent makes this one of the more demanding Munros in the area. It’s not technical on the standard route, but it requires good fitness and stamina. Allow 5–7 hours.
Is Ben Lui good for beginners? The length and sustained ascent make this a tough introduction to Munro bagging. Build up with shorter mountains first — Schiehallion or Meall Bhuide are much better starting points. Once you’ve done a few and are confident with longer days, Ben Lui is a fantastic objective.
Where do you park for Ben Lui? Small free car park at Dalrigh, just off the A82 south of Tyndrum (FK20 8RY). Space for around 10 cars — arrive early on popular days.
Can you climb Ben Lui via Coire Gaothach? In winter, Coire Gaothach is a classic Grade I/II snow climb and one of the most popular winter routes in the Southern Highlands. In summer, the coire is not recommended — the steep ground is loose and the standard south-east ridge is a much better option.
Is Ben Lui suitable for dogs? The walk-in along Glen Cononish is fine for dogs. The steep south-east ridge is more demanding — fit, experienced mountain dogs can manage it, but it’s a long day for them too. Keep dogs on a lead near Cononish Farm where there’s livestock.
