After a record year in 2014, the number of U.S. Half Marathon finishers declined in 2015. Following similar trends other race distances, the half marathon distance experienced a net loss of 3% year-over-year.
The second running boom appears to be backing off as runners retreat from non-traditional races. After more than two decades of consistent and often double-digit increases, the number of recreational athletes completing road races declined for the second straight year in 2015.
The annual Running USA State of the Sport: Largest Road Races shows in 2015 that the top five largest races retain their top billing, while seven races move into the top 50 and a number of others move up in the rankings.