Reviving this thread to plug the Greenock Cut (
http://tinyurl.com/yfryndr) plus Kelly Cut walk from Greenock to Wemyss Bay. Finally got it together to do last weekend, in time to catch it still frozen and snow-bridged in places. It's a great walk, fair distance but no hilly challenges, easy to organise by train, and with added industrial archeology.
Get a return to Wemyss Bay but get off at Drumtrochar on the way out. The trains are only one per hour so it's worth a bit of advance planning. Walk up the hill to the start of the Greenock Cut at Overton (marked with a
P on the Landranger Firth of Clyde map). Follow the Greenock Cut all round the (more or less) contour (views!) to Cornalees Bridge where there's a visitor centre with loos, teas and an exhibition about the history of the Cut. (And last summer they had a swallow's nest with a camera.)
From Cornalees Bridge pick up the path along the Kelly Cut (there are little signs for it), and follow that up to the Kelly reservoir. From there it's downhill all the way to Wemyss Bay.
It's a great leg-stretch. The view back over Greenock is sensational, though I was a little disappointed by the lack of fleshpots at Wemyss Bay. But the station is magnificant.
I've seen distances of 5.5 miles for the Greenock Cut and 6 miles Cornalees Bridge to Wemyss Bay. For a shorter walk you could either miss out the Greenock Cut by taking the track directly over the hill from Overton to Cornalees Bridge, or use it to make a circular walk back to Overton.
The Greenock Cut section is generally OK for any footwear you're likely to use for that kind of distance but the Kelly Cut had some very wet sections, and there are two places where the banks of the cut have been broken through to let the water run down to the newer Daff reservoir - some scrambling/jumping/paddling required. It's all fine with waterproof hiking boots and a bit of care. I guess when there isn't snow melting all over the place it won't be so wet.
Just one slight downside - there was a moment on the way down into Wemyss Bay when I though we might be trapped forever in a maze of mobile holiday home things........... but all part of life's rich variety, innit?