 Austin also hosts the Texas Rollergirls flat-track roller derby league.The region is also home to several endurance and multi-sport race events, including the Austin Marathon, the Capitol 10K race, and the Capital of Texas Triathlon.Sizeable running, swimming and bicycling communities make use of a network of trails and greenbelts centered on the Lady Bird Lake Hike and Bike Trail and local pools like Barton Springs Pool.