In reply to Gordon Stainforth:
> Mind you, I managed Ben Vorlich from the small road on the north side in 1 hr 20 mins just three years ago. Not sure how that compares with Naismith.
That's pretty good. There's an argument that Naismith's should really be applied over the whole outing, not just the ascent part, but in terms of getting to the top of Ben Vorlich from Ardvorlich it's about 900m of ascent with just under three miles of distance (it's a remarkably straight route), so Naismith would have you there in around 2hr 30 mins.
Funnily enough I'm going there this afternoon assuming the forecast better weather does arrive, and I'd expect to be up in 1hr 30 if going that way (and I'm 54), although I'll likely cut across to the nicer NW ridge which adds 15 minutes or so.