Rock 'n' Roll Seattle Marathon Wikipedia
The Rock 'n' Roll Seattle Marathon is held annually in Seattle, Washington. It is part of the Rock 'n' Roll Marathon Series organized by Competitor Group, Inc.. The events include a half-marathon (21.0975 km) and a marathon (42.195 km). The inaugural event was held in 2009 and it has become hugely successful in recent years. More than 22000 runners participated in the 2012 edition.