A half-marathon is a long-distance running event that covers a distance of 13.1 miles (21.1 kilometers). It is a popular choice for runners who want to challenge themselves without committing to the full 26.2 miles of a marathon. Half-marathons are often held in various locations and can attract both amateur and experienced runners. Participants in half-marathons typically train for several months to build their endurance and speed. Many races offer support stations along the route, providing water and energy drinks to help runners stay hydrated. Events like the Rock 'n' Roll Half Marathon series often feature live music and entertainment, making the experience enjoyable for both runners and spectators.