Colin's Munros


Circuit of Loch Ossian: Carn Dearg, Sgor Gaibhre & Beinn na Lap
Map 385W, 12 May 2006

Route: 17.2 miles, 1535m=5035' ascent, 7hrs 40mins.

Corrour Station. Looking east over L. Ossian. The summit of Beinn na Lap. Shooting lodge on L. Ossian. A boulder by L. Ossian.

Route The circuit of Loch Ossian, climbing the three Munros of Carn Dearg, Sgor Gaibhre & Beinn na Lap, is only 10% more effort than a trip up Ben Nevis. Beinn na Lap is a very short walk on its own, being just six miles and 550m of ascent. It is easily omitted from the round, saving 3.6 miles and the 550m ascent. Such an omission is a good safety margin if a train needs to be caught at the end of the day.
Heading SW from Corrour Lodge, it is debatable where the best point is to leave the track along Loch Ossian to ascend Beinn na Lap. The main obstacle is the forestry. One possibility is to follow fire breaks from NN40666958 to NN40346963 and then a mile of bogland before the main ascent starts. This would save 2½ miles along the good lochside track, and substitute 2 miles of mountain path with 2 miles of pathless ground. However, the start of the fire break is difficult to find without GPS.
Transport A fit person can easily complete the walk between the first and last trains to Corrour Station, obviating the need to use the Youth Hostel or a return trip to complete the Munros there – until, of course, you want to return to do them again! The only problems are that there are too few trains to do it on a Sunday, and you'll probably have to skip either a cooked breakfast or an evening meal on the day you choose.
Here is the ScotRail timetable as of August 2016. Then the times had not changed by more than a few minutes over the decade that had passed since I did the walk. I recommend taking the earliest train. Then you should be able to catch the second last train back to an evening meal, giving 9½hrs for the walk. The last train is there as back-up and saves carrying gear for a night at the youth hostel.

StationMon-SatMon-Sat Mon-SatMon-Sun
Tyndrum Upr0800103214352031
Spean Bridge0939115515562153

* = Request stop. Speak to guard on train.

StationMon-SatMon-Sat Mon-SunMon-FriSun
Spean Bridge07571156175120101920
Tyndrum Upr09231319191421532106

Terrain: There are a number of miles of excellent track, especially on the north side of the loch, and quite a few miles of good paths. Some poor ground, mostly at the start of the walk, but not too much of it. The notes below give the detail of this.
Weather: 10°C at car; overcast, occasional light showers, cloud base 700-800m.

0855 Arrive at Corrour Station 410   00.0 milesNN35626641No Orange
0910 Track ENE to path end by Loch Ossian Youth Hostel 390 1.1 milesNN37186695 
0945 Wet, peaty track E to Peter's Rock 5151302.5 milesNN39356700 
E/SE without path over wet, peat hacks to:
M Carn Dearg
Hereafter good, firm ground with fast path along ridges.
9415554.25 milesNN41776619Orange
ENE to Pass at Mam Ban 7255655.35 milesNN43256697 
ENE to M Sgor Gaibhre 9558006.15 milesNN44486742weak Orange
1155 NNW to Bealach nan Sgor 802 6.5 milesNN44266790 
N to T Sgor Choinnich 9299256.77 milesNN44376833No Orange
  Head WNW directly towards Corrour Shooting Lodge.
Good firm terrain down to 700m, then poor wet peaty slopes.
At bottom, go along track into forest, ignoring the pigeon
shooting sign else you end up in very wet, deep bogs.
Bridge over R. Ossian at NE end of L.Ossian 3859509.2 milesNN41276964 
1400 Take excellent, surfaced, logging road round the Lodge,
then SW along NW edge of loch to far end of forest.
The road can be left earlier – see above.
39098012.5 milesNN36916740 
NW to main path, path N to ridge,
then NE up ridge to M Beinn na Lap
937152514.25 milesNN37626957Orange
1600 Return SW down ridge path, then
S to road at road junction by Ruigh Nighean Ailein
(Path not always obvious, but easy slopes & terrain.)
410 16.05 milesNN36736724 
1620 S to road junction near Youth Hostel 390 16.35 milesNN36836693 
1635 Return WSW back to Corrour Station 410154517.2 milesNN35626641No Orange

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