text: Biking through the Arboretum is safer and more pleasant than biking along MN 5/Arboretum Blvd (narrow shoulder). Biking west to east is free (donation box); the ticket counter is toward the east end of Arboretum Dr. I'm not sure if the Arboretum permits free east to west transit for bicyclists wanting safe passage on their way to bike camping at Carver Park Reserve (Lake Auburn Campground), or points west.