USN's exclusive national TV coverage of the world's oldest annual marathon will showcase an expanded field of 36,000 runners tackling the historic 26.2-mile course, including many of the sport's elite marathoners and wheelchair racers.

This 2-hour race pre-show preview will have analysis of the race venue, interviews previously recorded on Saturday 19 April with many of the racers an in-depth coverage of any and all race related items.