CAI - Illinois Family 5k is a running race on October 10, 2026 in Oak Brook, IL, with an entry fee of $70.
Click here for all race details.
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
66°
Typical Low
43°
Based on US Climate Normals data from Lisle-Morton Arboretum, 7 mi from the venue.
Population
8,028
as of 2023
City Elevation
674 ft
Nearest Airport
ORD
Chicago O'Hare International Airport · 10 mi
Time Zone
Central Time
From Endurance Grid
A small town race. Lodging near the start could be limited, so book early.
Every finish line starts with a single decision. Claim your spot at CAI - Illinois Family 5k, put it on the calendar, and turn “someday” into a start date.
24
Days to train
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Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
CAI - Illinois Family 5k
Oct 10, 2026