The Inaugural 21.5K
- Date
- May 25, 2026
- Distance
- The 21.5k (~13.3 miles) · The 21.5K (Virtual… On Your Own Type Jawn)
From the Organizer
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.
Distances & Pricing
Race Location
About This Sport
From Endurance Grid's Founder
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.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
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.
Coming Up
More running races in PA
Run For Their Tomorrow 5k
5K
Pittsburgh Melanoma Foundation 5k Run/Walk
5K
1st Annual Bridgeville Boro 5k
5K
LVRR August Summer Series 5K
5K
Frequently Asked Questions (FAQs)
- What is The Inaugural 21.5K?
- The Inaugural 21.5K is a running event held in Philadelphia, PA. Learn more about the different endurance sports here.
- When and where is The Inaugural 21.5K?
- Monday, May 25, 2026 in Philadelphia, PA at 900 W Hunting Park Ave, Philadelphia, PA. Check the official event page for exact start times and wave schedules.
- How do I register for The Inaugural 21.5K?
- Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.
The Inaugural 21.5K
May 25, 2026