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Ben Oss seen whole from the next hill: a broad, rounded top above the dark water of a hill loch, with a sharper peak behind its shoulder under grey cloud.
Crianlarich and Tyndrum

Ben Oss

A Munro of 1,030 metres, number 101 of the 282.

On the hill todayI was up today
The hill

Ben Oss stands right beside Ben Lui in the hills south of Tyndrum, in Loch Lomond and The Trossachs National Park.

The two stand together at the head of Glen Fyne, which carries on as the long sea loch, Loch Fyne.

On its other side, about two kilometres to the east, is Beinn Dubhchraig, and the two are often climbed together. The park authority says the slopes of the pair carry one of the last stretches of Caledonian forest, mixed with birch.

The authority, which spells the hill Beinn Oss, sees the high ground here as rocky summits and ridges, wild, remote and exposed.

The start
Dalrigh, on the A82 about a mile before Tyndrum on the road from Glasgow.
The way
In the park authority's walk you go over Beinn Dubhchraig first, then on to Ben Oss with Loch Oss in view. The way back is very like the way out.
Underfoot
The park authority warns it can be a wet hike to start with.
Under snow
No avalanche forecast covers this hill, but that does not mean there is no risk under snow. The avalanche service's forecasts begin on 17 December 2026.
Summit
Grid reference NN 287 253
Parking
The park authority points to Dalrigh and its turning off the A82.
Bus and train
Tyndrum has Citylink coaches and Tyndrum Lower station. From there, the park authority's directions are a walk of about a mile along the A82 towards Glasgow to the Dalrigh turning.
Toilets and food
In Tyndrum, Forestry and Land Scotland points to the public toilets at the Green Welly Stop.
On the hill today
0° to 4°Rain on the summit, 1,030 m. Feels like −4° in the wind.

West wind to 12 mph, gusting 25
Rain, about 7 mm
Light from 7.52am to 6.16pm, ten hours

Sat 17Clear−2° to 4° on top · 6 mph, gusts 14
Sun 18Clear−4° to 3° on top · 7 mph, gusts 14
Mon 19Drizzle−5° to 5° on top · 9 mph, gusts 19

A weather model's forecast for the height of the summit, not a report from the hill. Read the mountain forecast the evening before: West Highlands forecast, Southeastern Highlands forecast, Ben Oss, Stirling, Southwest Highlands mountain forecast.

October2026

MTWTFSS

Going another day?

Choose the day you mean to climb.Near or far: the light you will have, and what the summit is likely to be doing.

Photographs by gregory666, alan hinnrichs and szymon lupinski, via Google

Accessed from Dalrigh on the A82 and on a long walk through forests of pine and birch, many people choose to tick off both Dubhchraig and the nearby neighbour Oss.The Loch Lomond and The Trossachs National Park Authority, on its page of Munros reached by public transport
Before you go

Carry

  • A paper map and a compass, and the skill to use them
  • Waterproofs, warm layers, hat and gloves
  • Food and drink
  • A head torch, a whistle and a first aid kit
  • A survival bag
  • Boots with a good grip

Under snow and ice this is a different day, with short light and the risk of avalanche. It needs an ice axe, crampons, winter boots and the skill to use them.

If something goes wrong

  • Dial 999, ask for the police, then mountain rescue
  • Give a six-figure grid reference: the summit is NN 287 253
  • Say how many are hurt, how many are with you, and your number
  • Register to text 999 before the day: text the word register to 999

The summit is optional. Turning back is the right decision whenever the cloud, the wind or the light say so.

How to call for help in the hills · Safety and skills for the hills · ThinkWINTER

From our readers

Nobody has written from Ben Oss yet. If you were up, yours would be the first.

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Read more elsewhere

For the route itself, take the map and read these.

Sleep and eat at its foot

Next along: Beinn Dubhchraig, Ben Lui, Beinn a' Chleibh, Beinn Bhuidhe. Checked on 10 October 2026. The facts on this page are the Loch Lomond and The Trossachs National Park Authority's, the Outdoor Access Trust for Scotland's and Forestry and Land Scotland's; the forecasts are the Mountain Weather Information Service's and the Met Office's. Height and position from The Database of British and Irish Hills, v18.3, adapted, CC BY 4.0. This page is not a route description and does not replace a map.