I can highly recommend the booklet “The Three Lochs Way” which is available at various Visitors’ Centres, from accommodation providers or online on their website. It has detailed and helpful information about distances, waypoints and coordinates as well as background information on the various points of interest.
*** If you're parking at the given coordinates, the roundtrip for all 6 caches and bonus will be about 4.3 km. Allow 1.5 – 2 hrs, more with children. The path can be done with a good mountain bike, but surely you will be pushing the bike at a couple of places.
*** If you're planning to hike/cycle the entire stage 3 from Garelochhead to Arrochar, please be aware that it is 20.5km/12.7miles and will take about 4.5 - 5 hours.
Take note of the letter/number on the cache lid as you will need it for the bonus.
Almonds GC5MM9D
Peanuts GC5MMBZ
Hazelnuts GC5MMCC
Walnuts GC5MGMY
Coconuts GC5MMCP
Pecans GC5MMD9
Alletun GC5MK0H - N 56° 10.HAC - W 004° 46.WSP