August 29 - September 1, 2025 4 days of exciting and challenging racing in the green mountains of VermontRegistration opening in early June! REGISTER TODAY! Registration for the 2025 GMSR is now open! You can register on Bikereg.Click here to read our latest email with changes to this year’s event.Please see the GMSR Facebook page for the latest information about this year’s GMSR. Thanks to Our Sponsors Add Your Heading Text Here