The
Indianapolis Motor Speedway Radio Network (known typically as the
IMS Radio Network), is an in-house
radio syndication arrangement which broadcasts the
Indianapolis 500, the
Verizon IndyCar Series,
Indy Lights, and the
Brickyard 400 to radio stations covering most of
North America. The network, owned by the
Indianapolis Motor Speedway and headquartered in
Speedway, Indiana, claims to be one of the largest of its kind in the world. It currently boasts over 400
terrestrial radio affiliates, plus
shortwave transmissions through
AFN, the
LeSEA broadcasting network, and
World Harvest Radio. The network is carried on
satellite radio through
Sirius/
XM, and is also accessible through
online streaming, and downloadable
podcasts. As of 2014, the network claims an audience of 11 million listeners.