Meantime, it's worth bearing in mind that wummer has a couple of advantages over summer - there are less midges in the cold and the wind, and the hills are a wee bit quieter. Not a lot of folk like being out in the wummer weather.
Start/finish: Dalwhinnie. Glasgow/Edinburgh to Inverness trains stop here and the Inverness Citylink bus.
Map: OS Landranger 42
Route: I cycled south from Dalwhinnie on the cycle route which starts close to the Dalwhinnie junction on the A9. Follow it to Balsporran Cottages, take the track down to the railway line and cross the level crossing. I chained up the Brompton here. Continue along the track. Ignore the first track to the right but take the second. Follow it up the northeast ridge of Geal Charn. It eventually becomes a more enjoyable path. From Geal Charn follow the path that continues south to the bealach between it and A'Mharconaich and join a track. Where it drops to the bealach a path leaves to the left. It's boggy at first but quickly improves. It gently climbs onto the ridge of A'Mharconaich and junctions with another path at a small cairn. Turn left and enjoy a level stroll to the top. I returned to the bealach and followed the track back down to Balsporran Cottages.