American 30 km race walk record holder and reigning 20 km champion Kevin Eastler made his 50 km a debut a memorable one Sunday with his victory at the first stop of the USA Race Walking Grand Prix, the 2007 USA 50 km Championships in Chula Vista, Calif.

Eastler's winning time of 4 hours 5 minutes 44 seconds gave him the IAAF B standard for the distance.

Other top finishers were two-time Olympian Philip Dunn (2nd-4:09:54), 2004 Olympian John Nunn (3rd-4:14:16), Ray Sharp (4th-4:26:07) and three-time Olympian and 1999 World Outdoor Championships bronze medalist Curt Clausen (5th-4:27:41).

The men's event served to select athletes who will represent the US at the Pan American Cup of Race Walking in Brazil and the IAAF World Championships in Japan.

Mark Green continued his assault on the masters record book by setting the 50-54 record in a time of 4:37:28.

Heidi Hauch of Fountain Hills, Ariz., easily defended her title in the event, winning in 5 hours, 42 minutes 55 seconds. Karen Karavanic was the runner-up in 6:21:01 and Dora Choi finished third in 6:33:57.

In the accompanying 20 km event, Joanne Dow and Theresa Vaill finished under the IAAF B standard with times of 1:34:21 and 1:34:42. Loretta Schuellein (WalkUSA) achieved an Olympic Trials qualifying performance with her 1:46:21 finish.

The next USA Race Walking Grand Prix event is the USA 1 Mile Championship at the 100th Millrose Games in New York City, which will mark the debut of the event for women at Millrose.

For more information on the 2007 USA 50 km Race Walk Championships, including complete results, visit www.usatf.org