Blue, Central Gully Grade I 

Purple, South Central Grade II

Red, South Rib Grade II 

Green, Upper Snow Field Grade I

Yellow, Central Direct Grade I 

If you start at the car park in the link there is a river crossing where you can will have to crouch under a railway bridge to get to the track. Some bog and accent then you hit the North West side and go around the north face, you you will then see the horse show where the majority of these routes lye. 

Summit, Ben Lui, Beinn a'Chleibh (optional) 

Distance, 7 miles 11.3km

Time, 5-7 hours 

Parking, Glen Lochy Forestry Car Park