Bikers participating in a triathlon will slow down traffic on some local roads in Peachtree City Saturday morning.

The Tri-PTC Spring Triathlon will last from 7 a.m. until noon, with areas affected including Willowbend Road, Hip Pocket Road, Kelly Drive, McIntosh Trail, Robinson Road and Colonnade.

Most of the other activity for the triathlon will take place on the city’s cart path system and in Lake Peachtree.