Since Baltimore based apparel company Under Armour signed on as the title sponsor of the Baltimore Marathon, registration has increased dramatically. The announcement was made last week on August 27 and since that time nearly 900 participants have registered. All runners participating in Under Armour's Baltimore Marathon and CareFirst BlueCross BlueShield Half-Marathon will receive an Under Armour LooseGear shirt as part of the registration fee.

"Under Armour apparel is a great fit for the Baltimore Running Festival," said Lee Corrigan, principle of Corrigan Sports Enterprises, the event coordinator. "The news that Under Armour has signed on as title sponsor and will be providing shirts to marathoners and half-marathoners has spread throughout the running community and is fueling the registration increase."

The Baltimore Running Festival takes place Saturday, October 18. In addition to the marathon and half-marathon, other events include the Fila 5K, GEICO Team Relay and Kid's Fun Run. All races are limited and filling quickly--4,000 for the marathon, 3,000 for the half-marathon, 750 teams for the relay and 1,200 for the 5K.

As a result of the Baltimore Running Festival, more than $1 million was raised for charity in the first two years of the event.

Online registration can be found at the race Web site or call (410) 605-9381 to have a brochure mailed.