Mill Race Marathon
The Mill Race Marathon in Columbus, Indiana, offers a fast, Boston-Qualifying course with strong community spirit.
Race Date
Sep 26, 2026
Location
Columbus, IN
Quick facts
- Date
- Saturday, September 26, 2026
- Location
- Columbus, Indiana
- Distance
- Half marathon (13.1 mi) + 26.2M, 5K run | kids run
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Yes
- Finishers on record
- 16,633
Highlights
Good For
Atmosphere
The Experience
The Mill Race Marathon in Columbus, Indiana, is a well-established event, first run in 2013 and now in its 12th edition. It’s known for its fast, certified course, making it a prime location for runners aiming for personal bests or seeking a Boston Marathon qualifying time.
The race typically sees around 1,000 finishers, with a notable 41% of participants returning year after year, underscoring its appeal. The event is more than just a race; it’s a community celebration, offering a full marathon, half marathon, 5K, and a kids' fun run, ensuring a weekend of activities for all ages.
Runners can expect a flat and fast course, ideal for achieving fast times, complemented by a welcoming atmosphere. The typical race-day weather in late September offers comfortable temperatures for racing.
Race-provided description
Mill Race Marathon in Columbus, Indiana features a Boston-Qualifying marathon, half marathon, 5K, and Kids Fun Run with a fast course, race weekend events, and community celebration.
Course Info
USATF CertifiedCourse Type
Loop Course
Terrain
road
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
USATF Certified Course
IN22021TDK · Mill Run Half Marathon
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Quality Score
Standout7912 years running
~946 finishers a year
growing or steady
41% returning runners
USATF certified · 2 timing sources
runners from 1 state
winner 1:04:14
typical high 75°F
Race Day Weather
5-year historical avgStart (Low)
58°
Afternoon (High)
75°
Warm — hydration strategy is key, start conservatively
0.1"
Precipitation
10 mph
Wind
72%
Humidity
Historical Finish Times
How 16,633 finishers actually crossed the line across 12 years.
Most recent
2025
Total finishers
16,633
Median time
2:18:28
Latest turnout
1,018
States
10
Turnout by year
2017–2025
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the Mill Race Marathon?
The Mill Race Marathon is held on Saturday, September 26, 2026.
Where does the Mill Race Marathon take place?
It takes place in Columbus, Indiana.
What distances does the Mill Race Marathon offer?
The half marathon (13.1 miles), plus 26.2M, 5K run | kids run.
Is the Mill Race Marathon course flat and good for a PR?
The Mill Race Marathon is a ultra-flat, loop course course. The course is USATF-certified, so finish times can be used for qualifying.
How many people run the Mill Race Marathon?
HalfRuns has finish records for 16,633 runners who have completed the Mill Race Marathon.
HalfRuns editorial — independent, no paid placement.
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