I had a couple of questions regarding necessary gear - we are using WIDE format roadbooks produced by Rally Navigator (which is totally freaking amazing!!!
) to make the routes.
You will need a wide format roadbook holder (preferrably motorized), an adjustable odometer and a compass of some sort (usually a GPS unit set to display Heading)
Here is my basic and very functional setup:
More info: How to Ride a Route Using a Roadbook
Dave at Rally Management Services
is always a good resource if you need gear or advice.