After three series held in Nairobi, Athletics Kenya will select the national relay team at Lornah Kiplagat tartan track near Iten on Saturday.
The team will fly the national flag at the IAAF World Relay Championships set for Yokohama, Japan, on May 11-12.
AK decided to make the one-day trials an invitational event after experiencing high turn out in the first two legs. The third leg held at Nyayo Stadium last Saturday was invitational.
Alfred Kipketer, the former world junior 800m champion, was among top athletes that competed in the third leg. Kipketer, who has been out of action due to injuries, is best remembered for beating two-time Olympic 800m champion David Rudisha during the Rio Olympic trials inside Kipchoge Keino Stadium in Eldoret.