If you are using a gps you will find a lot of free resources and trail maps at GPSFileDepot:
I would also recommend that you use a permethrin based clothing spray if you are going to be in an area that has ticks. Permethrin binds to you clothing, last through several washings, and kills ticks. It is not for your on your skin; clothing only. It is harmful to cats and fish in its liquid form.
Since I started using it many years ago. I havenít been bitten by a tick and havenít brought any into the car or house which keeps the misses happy.