Last weekend's track and field highlights featured plenty of relay action. In Nairobi on Saturday, the Kenyans Mercy Cherono, Irene Jelagat, Ann Karindi and Perin Nenkampi set a new world 4 x 1500-meter relay record of 17:05.72, breaking the former mark of 17:08.34 set five years ago by a team from the University of Tennessee.
The United States is typically favored in any major 4 x 400-meter competition, but the Americans were edged by a men's team from the Bahamas at the Penn Relays Saturday. The quartet of Michael Mathieu, Demetrius Pinder, Chris Brown and Ramon Miller ran 3:00.78 to edge the U.S., which finished in 3:03.31. David Verburg, Manteo Mitchell, Kyle Clemons and Kind Butler raced for the U.S. The Americans won the women's 4 x 400 (3:25.62) and the men's 4 x 100 (38.57) , while Jamaica won the women's 4 x 100 (42.81).
In an individual race during Saturday's Drake Relays, Kristin Castlin upset World champion Brianna Hollins in the 100-meter hurdles, finishing in 12.57 seconds to Rollins' 12.58.
Sprint coaches and runners can check out a new four-part series about training for the 400 meters. Topics include basic 400-meter training; speed development; diversifying your training; and finishing strong.