Earth Day Fun Run on the Albany County Helderberg-Hudson Rail Trail on Saturday, April 21. Albany County Helderberg-Hudson Rail Trail. The out-and-back course is appropriate for the whole family and all skill levels. Runners, walkers, joggers, rollerbladers and skaters, and those with a stroller are all welcome to participate. Registration begins at 8:00 AM and the race will start at 9 AM. For more information, and to register early, visit www.mohawkhudson.org.