NB The Clais Fhearnaig is a great/surprising/pretty/cunning walking route, but I found pushing my bike through there particularly awkward, so I'd advise against this route if you are planning to take your bike.
There is no real problem taking a bike up from the Linn of Quioich to the foot of the Dubh Ghleann (where the Quoich turns from flowing west to flowing south) and there is a great path all the way from there to the ford which lies to the south of Carn Fiaclach (NO 111 959), through the eastern half of this path is no longer shown on OS maps for some reason - the key is to leave the north bank of the Quoich at NO 0974 9523 (a shingle bank just after crossing a stream)
- Start of the 'secret' path
and follow a faint path up an earthy bank through the trees, where it quickly turns into a beautiful single track all the way east to the ford.
- The 'secret' path