2025 4K Trail Run

Join us on Wednesday, May 21st or Thursday, May 22nd (rescheduled for Thursday, June 26) for the most unique race in Boston!

Limited spots are available for corporate sponsors and individual runners for June 26th!

Individual Registration

Friend of the island or a fan of the race looking to join this year's trail run? Register yourself as an individual to run on our rescheduled date of Thursday, June 26th. The deadline to register is Friday, June 20, 2025.

Corporate Team Registration

Every team has a unique registration link. If your team has already registered, please reach out to your Team Captain for your registration link. If your team has not registered yet, contact sponsorships@cathleenstoneisland.org to register today. The deadline to register as a corporate team is Friday, June 13, 2025.

Increase Your Impact

Support this year's annual fundraising campaign!
Runners and teams can make a direct impact on Boston's youth by completing their own fundraising campaign. Plus, fundraisers have a chance to win some great prizes!

Peer to Peer - Learn More

$44,407

Raised of $85,000

$85,000

4K Trail Run

2025 4K Trail Run

Limited spots are available for corporate sponsors and individual runners for June 26th!

Individual Registration

Corporate Team Registration

Increase Your Impact

Support this year's annual fundraising campaign!
Runners and teams can make a direct impact on Boston's youth by completing their own fundraising campaign. Plus, fundraisers have a chance to win some great prizes!

$44,407

Raised of $85,000

Presenting Sponsor

Champion Sponsor

Elite Sponsor

Winning Sponsor

Competitive Sponsor

Race Sponsor

In Kind Supporter

4K Trail Run

2025 4K Trail Run

*Limited spots are available for corporate sponsors and individual runners for June 26th!*

Individual Registration

Corporate Team Registration

Increase Your Impact

Support this year's annual fundraising campaign!Runners and teams can make a direct impact on Boston's youth by completing their own fundraising campaign. Plus, fundraisers have a chance to win some great prizes!

$44,407

Raised of $85,000

Presenting Sponsor

Champion Sponsor

Elite Sponsor

Winning Sponsor

Competitive Sponsor

Race Sponsor

In Kind Supporter

Limited spots are available for corporate sponsors and individual runners for June 26th!

Support this year's annual fundraising campaign!
Runners and teams can make a direct impact on Boston's youth by completing their own fundraising campaign. Plus, fundraisers have a chance to win some great prizes!