From the Organizer
Spring is here, and it's the perfect time to dust off your running shoes! Shake off the winter hibernation and join us for the First Call 5K, 10K, and Half Marathon. This is your chance to set the tone for an incredible 2026 race season. This year’s race takes place on the lightning-fast Glacial Drumlin and Fox River Trails—so fast, it’s faster than flat! Don’t miss out—The First Call is part of the exciting Chilly Willy Winter Run Series.
Events
Weather
Typical Conditions
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
45°
Typical Low
26°
Chance of Rain
27%
Based on US Climate Normals data from Waukesha Wwtp, 1 mi from the venue.
Host City
About Waukesha, WI
Population
70,779
as of 2023
City Elevation
797 ft
Nearest Airport
MKE
General Mitchell International Airport · 18 mi
Time Zone
Central Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at First Call 5K, 10K, & 1/2 Marathon, put it on the calendar, and turn “someday” into a start date.
269
Days to train
- Race
- First Call 5K, 10K, & 1/2 Marathon
- Date
- March 21, 2027
- Location
- 810 W College Ave, Waukesha, WI
Coming Up
More Running races near Waukesha, WI
Independence Day Run
1K · 5K · 10K · Half Marathon · From $42.50 · FOX RIVER PARK
4 miles away
Run With The Cops
5K · From $40 · 494 W Main St
Less than a mile away
Christmas Clearing Council Jingle Bell Jog and Walk
2 Mile / 3K · 5K · Other · From $5 · The Ingleside Hotel and Lake Country Trail
5 miles away
Procrastination Run
1K · 5K · 10K · Half Marathon · From $35 · 1927 E Sunset Drive
4 miles away
From Endurance Grid
About These Sports
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Running
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.
Rucking
Covering a distance on foot under a weighted rucksack — from timed solo challenges to longer team events.
Frequently Asked Questions (FAQs)
- What is the First Call 5K, 10K, & 1/2 Marathon?
- First Call 5K, 10K, & 1/2 Marathon is a running and rucking race held in Waukesha, Wisconsin on March 21, 2027. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the First Call 5K, 10K, & 1/2 Marathon?
- Sunday, March 21, 2027 in Waukesha, Wisconsin at 810 W College Ave. Check the event page for exact start times and wave schedules.
- How do I register for the First Call 5K, 10K, & 1/2 Marathon?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
First Call 5K, 10K, & 1/2 Marathon
Mar 21, 2027