2025 Altra B3 Distance Series Presented by Kelly Benefits
REGISTRATION & UPGRADE INFORMATION
The B3 is where you want to be!
Entry includes:
Guaranteed entry into each B3 race:
Individual premiums for each race
A finisher medal from each of the three races, plus a one-of-a-kind revamped Altra B3 Distance Series presented by Kelly Benefits finisher item
Commemorative B3 Distance Series Loyalty Pin for those who have participated in the B3 series before
NEW THIS YEAR: A cost savings on bundling all 3 races!
*Please note: We heard your feedback and 2025 registrants will receive a cost savings on the B3 Distance Series bundle in place of an extra B3 Premium. Extra B3 gear will be available for purchase so you can choose something you really love if you’d like!
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.
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.