More recently I have been using https://cycle.travel/ for route planning although some of the older group rides can be viewed or downloaded from the links below

When Route link
September 2017 Danube - Passau to Vienna
August 2017 Southampton to Portsmouth
July 2017 Woking canals
June 2017 ViaRhona - main part of route Lyon to Montpelier
April 2017 St Malo - Evran loop
April 2017 Hayling to Portsmouth Loop
April 2017 Alresford to Droxford loop
March 2017 Stockbridge to Winchester
January 2017 Farnham to Churt
December 2016 Wimbledon to Woking
November 2016 Alresford to Alton
November 2016 Didcot to Basingstoke
October 2016 Whitchurch to Inkpen
October 2016 New Forest South
October 2016 Silchester Brimpton loop
October 2016 Hare Warren Down
September 2016 Rotherwick, Stratfield Saye, Bramley loop
September 2016 Windsor Jubilee River loop
September 2016 Whitchurch South Loop
August 2016 Devon C2C - Day 1
August 2016 Devon C2C - Day 2
August 2016 IoW Sunshine Trail
July 2016 TPT Day 1 - Southport to Warrington
July 2016 TPT Day 2 - Warrington to Glossop
July 2016 TPT Day 3 - Glossop to Doncaster
July 2016 TPT Day 4 - Doncaster to York
April 2016 St Malo to Dinan and Dinan to St Malo