I am contemplating traveling the parts of Route 66 I haven't done this fall-basically all of it except Illinois. The plan is to fly to St. Louis, rent a vehicle and drive to the end in Santa Monica, visit relatives in Leucadia and fly home from San Diego. I have lots of the guide books and maps, but I need some practical advice on how long to allow for the drive. I expect to see a moderate amount of the sites, but not every single route variation or alternative route. So, if you have experience, please relate your trip. Should I allow an average of 100 miles a day, 150 or ? So far my only must stop is the Wigwam Motel in Holbrook, AZ. Missed staying there on a visit twenty years ago because I was e=ignorant. Won't ,ake that mistake twice. Thanks for the advice.