Suggestions for ride

Hello,

I currently run the swimming coaching for swimmers in the Blue Mountains and am hoping to organise some off road rides that my group of teenage swimmers can do on a roughly monthly basis for summer.

The group will be based at Glenbrook and I am generally looking at rides on Saturday mornings or afternoons before or after their swimming training. Unfortunately I know very little about off road riding so any advice, tips or ideas on how to plan and prepare for something like this would be appreciated.

Corin