The National Track and Field Championships in Niigata were the main event this weekend, but up north where it's cooler there were three important road races. Chuo University won the 7-stage, 66.2 km university men's race at Saturday's 71st Oga Ekiden in Akita. Hakone Ekiden winner Aoyama Gakuin University led on the first two stages, but on the 7.5 km Third Stage Chuo's Rei Yamahira took