MammothMarch Boston

The MammothMarch Boston takes place on Saturday, June 6, 2026, at 6:45 AM EDT starting from Wompatuck State Park on Union Street in Hingham, Massachusetts, USA. This 20-mile hiking challenge must be completed within 8 hours on National Trails Day 2026, exploring the undeveloped, heavily wooded state park with its 3,500 acres of trails, streams, and ponds – located just 20 miles south of downtown Boston.

Event Logistics and Participant Information:

• Venue: Wompatuck State Park – a hidden attraction on Boston's South Shore with 3,500 acres of trails, streams, and ponds.
• National Trails Day: This event takes place on National Trails Day 2026, joining one of the nation's biggest hiking events.
• Finisher Medal: All participants who complete the 20 miles within the 8-hour time limit receive a finisher medal.
• Sold Out: The event is sold out for 2026. A waitlist is available for those wishing to be notified if additional tickets become available.
• Enhanced Refund Protection: Information and FAQs regarding refund protection are available on the event website.
• Community: Described as an amazing community of nature-lovers, hikers, and MammothMarch addicts.
• Reviews: Past event reviews and participant testimonials are available on the MammothMarch website.

Route and Atmosphere:

• Scenic Highlights: Explore the undeveloped, heavily wooded Wompatuck State Park with its network of trails, streams, and ponds – a natural oasis just 20 miles south of downtown Boston.
• Terrain: Forested trails, typical of New England state park landscapes. The 20-mile course is designed to challenge hikers while showcasing the park's natural beauty.
• Challenge Format: Master the challenge of hiking 20 miles at a stretch within 8 hours. Participants finish exhausted but proud and happy.
• Picture-Perfect Getaway: MammothMarch Boston makes for an ideal weekend getaway – a beautiful day of hiking combined with proximity to Boston's amenities.
• Community Vibe: Join a community of like-minded outdoor enthusiasts. After two sold-out years in a row, this event has become a beloved tradition on the South Shore.
• Spectator Experience: Friends and family can cheer participants at the start and finish within Wompatuck State Park, with opportunities to explore the park during the event.

MammothMarch Boston 2026 invites hikers to tackle 20 miles in 8 hours on National Trails Day through the scenic trails of Wompatuck State Park in Hingham, Massachusetts – a sold-out community celebration of nature, endurance, and achievement.