On your marks, get set, run.
For some people in Sunday's YMCA Road Race, that run will last 21.1 kilometres (half-marathon), while others will opt for a shorter distance and will pound the pavement for five or 10 km.
The race begins with the half-marathon start at 8 a.m., followed at 8:15 by the 10km start, and the 5km start at 8:45.
Those races will be over by the time the Healthy Kids Marathon stages the final leg of a 42.2km elementary school project that began a month ago. Kids will run three laps (two km) around Masich Place Stadium.
From 11 - 2 p.m., the Family Y on Massey Drive will be a hive of fun kids activities, part of the Y's North America-wide celebration of Healthy Kids Day. Admission is free of charge.