Registration for the next edition has not opened.
We earn a small commission when you register through this link, at no cost to you. Details
Official race websiteRiverfront Park, Miamisburg, OH 45342
The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.
The 10.5-mile bike course climbs 133 feet, about 13 feet a mile: flat.
| Course | Distance | Climbing | Terrain |
|---|---|---|---|
| 10.5 mi Cycling Route in Miamisburg, OhioBike | 10.5 mi | 133 ft | flat |
| 8.6 mi Running Route in Miamisburg, OhioRun | 8.6 mi | 242 ft | rolling |
| 3.1 mi Running Route in Miamisburg, OhioRun | 3.1 mi | 46 ft | flat |
| 3552.6 m Activity Route in Miamisburg, OhioRun | 2.2 mi | 54 ft | flat |
From the course maps the organizers publish on Ride with GPS and MapMyRun; climbing is the total gain the map reports. Courses can change between editions, so check the date on the map.
National lists computed from results, entry fees, course maps and water temperatures; they refresh through the day.
Aggregated from official results (Speedy Feet) for Miamisburg Triathlon. Individual finisher names are not stored here.
At the 2026 2-Person Team Entry, the fastest tenth finished in 1:23:39 or better, the top quarter in 1:32:43, and half the field in 1:41:33; the last tenth came in after 1:55:43.
At the 2026 Solo Entry, the fastest tenth finished in 1:25:41 or better, the top quarter in 1:30:55, and half the field in 1:42:14; the last tenth came in after 2:09:14.
Where a finish time would have placed in 2026.
At the 2026 2-Person Team Entry, the bike decided the most: the middle of the field lost about 8:19 to the top quarter there, 63% of the gap across the legs.
Compared with a typical sprint triathlon in Ohio, the median bike here was 4:53 faster.
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Run 1 | 24:56 | 27:48 | 32:46 | 35:14+ |
| Bike | 32:29 | 35:53 | 41:32 | 44:11+ |
| T2 | 0:55 | 1:04 | 1:33 | 1:56+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
At the 2026 Solo Entry, the run 1 decided the most: the middle of the field lost about 10:07 to the top quarter there, 76% of the gap across the legs.
Compared with a typical sprint triathlon in Ohio, the median bike here was 9:18 faster.
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Run 1 | 24:24 | 26:12 | 33:14 | 37:13+ |
| Bike | 33:08 | 34:07 | 37:07 | 46:23+ |
| T2 | 0:53 | 1:10 | 1:36 | 2:01+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
Down 12 percent since 2025.
All events combined, from official results.
From 2025 to 2026, the field went from 92 to 96 finishers, and the median time dropped from 1:49:54 to 1:41:33.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2026 | 96 (+4%) | 1:41:33 | under 1:23:39 | 1:07:28 |
| 2025 | 92 | 1:49:54 | under 1:28:20 | 1:11:55 |
From each year's official results for the Sprint Triathlon; virtual options are left out.
Slower than most Ohio sprint triathlons
The fastest quarter of the 2026 sprint triathlon field finished under 1:32:43, against 1:25:56 in a typical Ohio sprint triathlon, so times here run 8 percent slower.
Compares the fastest quarter of each field, so walkers and first-timers do not skew it. It reflects the course and the field together: a flat course, cool weather, or a competitive crowd all make times faster.
What the organizers of Miamisburg Triathlon cover on their registration page, in brief.
Schedule and packet pickup
Solo Entries. *** All Solo Participants Start at 7:55. 7:55 Jordan Farris. 7:55 Julie Wilson. 7:55 Mark Cowley. 7:55 Breanna Watts. 7:55 Scott Orlando. 7:55 Terrence Aufermann. 7:55 Alexa Sandler. 7:55 Lindsey Swingler. 7:55 Hannah…
Organize this race? Add details or a correction
New Date: Sunday, September 20!!! We've had a few that can't make the new date so there are a few open spots!
Due to the high water level in the river and construction on the run course, the triathlon has been rescheduled for Sunday, September 20. We made this decision to be able to provide the best and safest race possible.