References

GPS route planner:

https://www.gpsvisualizer.com/draw/

• Plot new routes anywhere in the world and save as GPX files.
• Visualise routes from existing GPX files.

Books:

• AA 50 Walks in Berkshire & Buckinghamshire by Nick Channer
• AA 50 Walks in Oxfordshire by Nick Channer and Ann F Stonehouse
• Chilterns Society 50 Great Walks in the Chilterns by Various Authors
• Around the Valley of the Pang by Dick Greenaway
• Pathfinder Guides Thames Valley and the Chilterns by Nick Channer