A customer from Seattle, WA on 8/1/11
Riding from Fort Flager to Port Angeles on the 8 mile stretch of SR 20 between SR 19 and HWY 101 needs to be taken seriously. It is comprised of a single lane in each direction and is a winding, hilly road. The sight lines are minimal and the posted speed limit is 55 mph. Most drivers exceed that limit and drift off into the shoulder on turns. The traffic is constant and includes tractor trailers (double long), transit vans, delivery trucks, and other large vehicles. The shoulder ranged from being several inches wide, several inches wide with a crumbling edge leading to a steep drop off, or crowded by a guard rail forcing a rider into traffic. Unlike, say HWY 101, the SR 20 shoulder was far too narrow for the conditions.
Overall I found the Adventure Cycling descriptions of roads I traveled on along this route to lack sufficient detail to be helpful. YMMV.
The map itself was heavily abused and held up well, the descriptions of services and other information was helpful and appreciated. The map was easy to read/follow and the elevation information was great (although note that scale changes!).