I just got back from my 5th year in a row of snow biking in Durango. It's is so much fun and it's easy on the body. Almost anyone can do it. I've got my sister-in-law & now my husband snow biking. Donna & Mike at Durango Snowbike Experience are wonderful! After a 3 hour lesson you will be able to go down most any trail on the mountain. Donna & Mike are so patient and basically just good people!! I would highly recommend snow biking at Durango Mountain Resort to anyone young, old, experienced or not. I think it's probably easier if you already know how to ski but certainly not required. I bike down trails that I was too scared to ski down. It's a blast!