The Marathon Project
- Date
- December 12, 2026
- Distance
- Gold Wave Marathon · Pro Marathon · TMP 5k
From the Organizer
A Premier Race Weekend Experience.
The Marathon Project - As Fast As Possible.
Comprehensive race info available at:
www.themarathonproject.com
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
69°
Typical Low
38°
Chance of Rain
11%
Based on US Climate Normals data from Tempe Asu, 10 mi from the venue.
Host City
About Chandler, AZ
Population
278,123
as of 2023
Elevation
1,211 ft
Nearest Airport
PHX
Phoenix Sky Harbor International Airport · 13 mi
Time Zone
Mountain Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at The Marathon Project, put it on the calendar, and turn “someday” into a start date.
187
Days to train
- Race
- The Marathon Project
- Date
- December 12, 2026
Coming Up
More Running races near Chandler, AZ
Sloth Run 5K/10K/13.1 PHOENIX
Half Marathon · 10K · 5K
19 miles away
July 4th Run 5K/10K/13.1 PHOENIX
Half Marathon · 10K · 5K
19 miles away
Tunnel to Towers 5K Run & Walk - Tempe, AZ
5K
8 miles away
9/11 Heroes Run - Phoenix, Arizona
8 miles away
From Endurance Grid
About This Sport
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.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
- What is The Marathon Project?
- The Marathon Project is a running race held in Chandler, Arizona on December 12, 2026. 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 Marathon Project?
- Saturday, December 12, 2026 in Chandler, Arizona at 5700 W North Loop Rd, Chandler, AZ. Check the event page for exact start times and wave schedules.
- How do I register for The Marathon Project?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
The Marathon Project
Dec 12, 2026