- Chiltern District tourism http://www.chiltern.gov.uk/tourism
- Chiltern Society http://www.chilternsociety.org.uk/ Walks, Events and Volunteering Opportunities in the Chilterns
- Chilterns Area of Outstanding Natural Beauty http://www.chilternsaonb.org
- Chilterns Conservation Volunteers http://www.chilternsociety.org.uk/
- Cyclist's account of The Ridgeway http://www.myra-simon.com/bike/ridgeway.html
- Cyclists' Touring Club http://www.ctc.org.uk
- Dennis Harvey http://www.harveyd.fsnet.co.uk/ridgeway.htm
- Endurance GB http://www.endurancegb.co.uk/
- English Heritage http://www.english-heritage.org.uk
- Equine Ramblers UK http://www.equineramblersuk.co.uk/