At the end of January, February and March we hold our renowned London Marathon training runs, which are open to ALL runners whether you are a member of an affiliated running Club or not.
The course is mainly along quiet country roads through the stunning Ashridge Forest with a small section on the towpath of the Grand Union canal. The routes are fully marshaled with water stops and our much-loved jelly baby stop! At the end there will be a steaming cup of tea or coffee and a mammoth cake waiting for you!

https://www.gadevalleyharriers.co.uk/london-marathon-training-runs/