As an ex local theres more than enough to keep you busy for days around Colne and Nelson.
Just after coldwell use the Boulesworth moor bridleway down into wycoller (tea and cake stop) and then the footpaths to Trawden are a good ride – I head up from Nelson and return along the Leeds/Liverpool canal – Single Speed is around 2 1/2 hours
The valley sides are very steep in and around Colne so any footpath is fair game.
Dont forget Hebden Bridge is just over the hill – about 10 miles away
Or you can ride up the roman road from Worsthorne over to Widdops res and up to Eygypt then down to Todmorden
Email me if you need more