MILWAUKEE — The Milwaukee Mile's past includes more than a century's worth of auto racing's biggest names, from A.J. Foyt to the Unsers and the Andrettis. Now the track's promoters are behind on payments to NASCAR and the Indy Racing League, leaving its future uncertain.

The Milwaukee Mile hosted its two biggest events of the year over the past month: An IndyCar series race May 31 and NASCAR's Nationwide and Camping World Trucks series races June 20. While the IndyCar and Nationwide dates drew decent crowds, the track's promoters still are struggling to meet their financial obligations.

Promoters have paid prize money to teams but they have not fully paid sanctioning fees owed to NASCAR and the IRL Both leagues confirmed those facts to The Associated Press on Tuesday.

The Milwaukee Journal Sentinel has reported that promoters owe NASCAR nearly $1.9 million.