Get an updated road map, a topographic map and weather information for the area you intend to tour.
Decide how far you're comfortable riding each day, keeping in mind that you'll be riding for several consecutive days.
Decide whether you'll camp or stay in hotels, and make appropriate reservations.
Arrange for a friend to accompany you in a car if you don't intend to carry your gear.
Identify secondary and tertiary roads using a road map. Consult travel guides for scenic routes.
Call local transportation authorities for shoulder information, and avoid roads with gravel or no shoulders.
Check prevailing wind conditions, if any, and try not to plan a ride that keeps you heading into the wind.
Schedule rest days (days with fewer miles) after especially long rides.
Plan night stops at the base of hills rather than at the top and before entering areas with narrow roads or high traffic.
Identify stops for water, food and mechanical assistance, and plan accordingly.