Register for the 2021 Big Lake Half Marathon

The 19th Annual Big Lake Half Marathon is returning to Alton, NH on Saturday, May 15, 2021 for another day of scenic New England running! Join thousands of runners and spectators at New Hampshire’s most scenic road race, where you celebrate your finish with an after-party featuring refreshing Smuttynose craft beer and plenty of food!

This event has been cancelled. If you were registered for the event, please check your inbox for an email including more details on what Loco Races is doing to accommodate participants. If you are unable to find this email, including in your spam folder or promotions tab, please email us at and we’ll be happy to assist you!