Arizona · Marathon · 5K
The Marathon Project
The Marathon Project is a marathon and 5K event held in Chandler, Arizona. Its next confirmed date is Saturday, December 12, 2026. About 147 runners take part across all distances.
- Race day
- December 12, 2026
- Location
- Chandler, AZ
- Field size
- ~147 runners
Race details
- Date
- Saturday, December 12, 2026
- Location
- Chandler, Arizona
- Distances
- Marathon, 5K
- Field size
- About 147 runners
- Course
- 144 ft gain
- Registration
- runsignup.com
- Official website
- themarathonproject.com
Registration, course & weather
- Registration status
- Open
- Entry fee
- Listed fee for the longest distance, $500 (from themarathonproject.com, checked September 26, 2026)
- Start time
- 7:00 AM MST
- Course profile
- Out-and-back course; Road surface; 144 ft gain, 144 ft loss (estimated from third-party elevation data); Boston qualifier
- Typical race-day weather
- about 48°F at the start, 68% humidity, 3 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 26, 2026)
About the The Marathon Project
A Premier Race Weekend Experience. The Marathon Project - As Fast As Possible. Comprehensive race info available at: www.themarathonproject.com
More marathons in Arizona
Coming up next, by confirmed date.
-
Buckeye Marathon, Half Marathon, 10K, 5K and 1 Mile Fun RunBuckeye, AZ1 Mile Fun Run10K5KHalf Marathon +2 more ~237 runners
-
Lost Dutchman MarathonApache Junction, AZMarathonHalf Marathon10K8K Trail Run +1 more ~2,200 runners
-
Lost Dutchman Marathon, Half Marathon, 10K and 8KApache Junction, AZ10K Run2 Mile Fun Run (Saturday8K Trail RunHalf Marathon +1 more ~400 runners
-
Yuma Territorial Marathon, Half Marathon, 10k and Team RelaySomerton, AZMarathonHalf Marathon10K5K ~2,148 runners
More races in Chandler
More upcoming races in Arizona
Keep exploring
- All races in Arizona
- 5Ks in Arizona 113 upcoming races
- 10Ks in Arizona 70 upcoming races
- Half Marathons in Arizona 49 upcoming races
- Marathons in Arizona 13 upcoming races
- 5Ks in the United States 6,000 upcoming races
- Marathons in the United States 594 upcoming races
- Winter Marathons
- December Marathons
- December races in Arizona
- Marathons in California 39 upcoming races
- Marathons in Utah 19 upcoming races
- Marathons in Nevada 14 upcoming races
- Marathons in New Mexico 9 upcoming races
Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
The Marathon Project: common questions
- When is the The Marathon Project?
- The next confirmed date is Saturday, December 12, 2026.
- Where is the The Marathon Project held?
- In Chandler, Arizona.
- What distances does the The Marathon Project offer?
- Marathon and 5K.
- How many people run the The Marathon Project?
- About 147 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the The Marathon Project?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the The Marathon Project?
- Yes — registration is open. Listed fee for the longest distance, $500 (from themarathonproject.com, checked September 26, 2026).
- What time does the The Marathon Project start?
- 7:00 AM MST.
- What is the course like at the The Marathon Project?
- Out-and-back course; Road surface; 144 ft gain, 144 ft loss (estimated from third-party elevation data); Boston qualifier.
- What is race-day weather usually like at the The Marathon Project?
- about 48°F at the start, 68% humidity, 3 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 26, 2026).
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.