Welcome to the b3
Baltimore’s First Distance Series
The 2024 Under Armour B3 Distance Series presented by Kelly Benefits
The Baltimore tradition is back in full force! Registration for the 2024 Under Armour B3 Distance Series presented by Kelly Benefits is now open. Sign up for the iconic road-racing series in Charm City and enjoy great swag from Under Armour, including the coveted B3 finisher gear.