how long is the iron horse trail?
<answer> The Iron Horse Trail extends 4.24 miles through the length of San Ramon as part of East Bay Regional Park District’s Iron Horse Regional Trail. <context> Iron Horse Trail. The Iron Horse Trail extends 4.24 miles through the length of San Ramon as part of East Bay Regional Park District’s Iron Horse Regional Trail (running from Pleasanton to Concord). The trail is flat, paved and wheelchair accessible. The trail is reachable from many points throughout San Ramon.