The Chevron Houston Marathon and Houston Marathon 2020 Free Streaming Aramco Houston Half Marathon offer participants a unique running experience in America’s fourth-largest city. The fast, flat, scenic single-loop course has been ranked as the fastest winter marathon and second fastest marathon overall by Ultimate Guide To Marathons. Additionally, with more than 200,000 spectators, Ultimate Guide to Marathons has ranked the Chevron Houston Marathon the fourth most crowd-supported marathon.