Hello. I am planning on walking with 5-7 girlfriends from Sarria to Santiago for my 55th birthday . . . well 60th to be truthful. One friend is planning to cancel because of her knees but I’m hoping to find an alternative - biking. She, and maybe one other for company, would bike while we walk - either with us or another route. The company helping with accommodations says biking isn’t a good idea as she/they would have to take the road or have to be “pretty good on a mountain bike”. Interested in thoughts on biking from Sarria to Santiago. Rocky, hills, ruts, narrow? She’s very polite and cautious so would go out of her way to be courteous to walking pilgrims - of which 5 would be friends. Thank you!