2026 Altra B3 Distance Series Presented by Kelly Benefits
REGISTRATION & UPGRADE INFORMATION

The B3 is where you want to be!

Entry includes:

How To Register or Upgrade

You can sign up for the Altra B3 Distance Series presented by Kelly Benefits on any of the individual B3 race pages (Shamrock 5K, Sole of the City 10K, or Charles Street 12). Simply select the “B3 Distance Series Bundle” on the front page and you’ll register for all three races in one easy step. If you are already registered for one or more of the individual races in the series. you can “upgrade” by registering for the remainder of the races in the series. Once you have done so email us at events@charmcityrun.com and we will provide you with instructions on how to complete your “upgrade”.

Transfer and Deferral Policy

Each race in the Altra B3 Distance Series presented by Kelly Benefits has specific transfer and deferral guidelines. Please review the "Race Information" section located within each event for specific information.