I'd recommend against that bit of the trail, I'm afraid - I remember it being pretty rough even on a hybrid. Here's a pic of it: http://www.geograph.org.uk/photo/130240 !

Looks like someone has fixed Chapel Lane already and it'll be in the next cycle.travel map update (next week or two).

Arghhh: :) given the A628 is so heavily used by HGVs due to the M67 you would think that sustrans/TPT would have ensured the off road bit was suitable for all cyclists... 

The Premier Inn at Rostherne/ Bucks Lane is still open :), thought there are other hotels on A50 to west of now de-trunked B5569: I was diverted along there because chapel lane bridge over new duelled A556  was closed:

Hotel receptionist said it was because they added cycle lanes then decided was too narrow for that...

NB also diversions around Rostherne (Chessire cycleway route 70).

NB going west I used the penultimate off road bit beside A628 (in rain): terrible: its was a steep rocky river with only a horse antimotorcycle gate midway so a 1 foot step for a Touring bike: I don't see how they can view this as a cycle route: better to put Cyclists Warning triangles and a 30mph limited with cameras between Dunford bridge-A628 junction and Longendale trail start. I thought the last section you mentioned sounded a bad idea and they seemed to be gaps in west bound traffic so I rode the road (its so narrow walking doesn;t look much help):  but I got overtaken badly by an HGV.  Bad driving persisted all the way along the B road to Glossop. Normal service was resumed after Glossop.

Is it worth putting a warning on that section: I would not go that way again: I think the TPT are being reckless in thinking of  it as  a cycle route.

Regards

NB I wore my brakes blocks out in a day due to peak grit :)