4K Trail Run

Wed May 20 - Thu May 21 2026

4K Trail Run

Wed May 20 - Thu May 21, 2026

Boston, MA 02210 US

CSIOBS Staff Team

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Invite Friends

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View Roster

Enter the name and email address of the members you’d like to invite. Please note that you can only invite up to invites from a RunSignup email address, but you can still email the registration link through your personal email.

How Do You Want to Send These Emails Send from a RunSignup email address.

With this option, we will send an email from noreply@runsignup.com to the members you invite.

Send from my personal email address.

With this option, we will generate a template email you can copy and send through your own email address and mail client.

Email Subject Line

Enter Your Personal Message

Email	First Name	Last Name
Email	First Name	Last Name

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4K Trail Run

4K Trail Run

CSIOBS Staff Team

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4K Trail Run

4K Trail Run

CSIOBS Staff Team

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