The Inaugural 21.5K
About this race
Set to take place on May 31, 2026 at 8am, the inaugural 21.5K is a half marathon(+) (13.3 miles) event that celebrates the culture and history of Philly.
Meant to complement the Broad Street Run, held on the first Sunday of May each year, the 21.5K takes place on the final Sunday of May, offering participants a final opportunity to take on a longer distance through the city before the summer heat sets in.
The race begins and finishes in North Philly, creating a route that connects neighborhoods, landmarks, and communities across Philly before returning to where it all started.
Participation is limited to 215 runners and (at least) 35 volunteers, for a goal of 250 total participants — celebrating both Philly (215) and America’s 250th anniversary.
Please note: The INAGURAL 21.5K will take place on an open streets course. Pace groups will help keep the community together, but participants are expected to follow all traffic laws and signals at all times, remain aware of their surroundings, and run safely and responsibly throughout the community.
Pick your distance
Running
The 21.5k (~13.3 miles)
Typical race-day weather
Based on 14 years of Open-Meteo archive data for this event's race dates in Philadelphia, plus the 3 days either side.
The sun rises at 5:34 AM and sets at 8:22 PM local time (EDT) in Philadelphia on May 31, 2026 — 14h 48m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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2026 results — The Inaugural 21.5K
The 21.5k (~13.3 miles) · 77 finishers
| Place | Name | Time | Pace |
|---|---|---|---|
| 1 | Patrick Appleton | 1:28 | 0:07 /mi |
| 2 | Unknown Unknown | 1:39 | 0:07 /mi |
| 3 | Ryan Busa | 1:39 | 0:07 /mi |
| 4 | Unknown Unknown | 1:39 | 0:07 /mi |
| 5 | Unknown Unknown | 1:41 | 0:08 /mi |
Every finisher is on the results page, filterable by distance, gender and age group.
All results by year
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🏃 Plan Your Next Race in Philadelphia
Find upcoming events by distance:
- Philadelphia 5K Races 80 races
- 10K Run Events in Philadelphia 10 races
- Philadelphia Half Marathons 6 races
- Marathons in Philadelphia 7 races
- Philadelphia Running Calendar 2026 117 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 129 Philadelphia events
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