Race to Stop the Clot® Fun Run
About this race
Ready, set, go!
The National Blood Clot Alliance is celebrating our 7th annual Race to Stop the Clot® Fun Run in recognition of World Thrombosis Day!
The Race to Stop the Clot® Fun Run is a virtual walk/run and fundraiser, with options to complete a 10K, 5K, or 1 mile course of your choosing anytime from October 10-17. Take your support one step further and sign up to help fundraise! All proceeds support the National Blood Clot Alliance (NBCA) and are 100% tax-deductible.
Your registration fee and any funds you raise before Sept. 30 will count toward our summer fundraising campaign and will be matched!
Registration Options:
- 10K, 5K, and 1 Mile includes a digital race bib, digital finisher certificate, fun challenges and prizes for top fundraisers, and ways to connect with your fellow runners.
- Receive a 20% family discount when you register 4+ people.
- Earn custom race t-shirt when you raise at least $50.
- Complimentary race registration will be automatically applied to anyone who makes an additional donation of $100+ during check out.
Here’s how it works:
- Register and consider fundraising to help support NBCA programs
- Run or walk your selected race distance any time between October 10 and October 17
- Report your race time on the results page
How does my donation help? All donations benefit the National Blood Clot Alliance (NBCA), a 501(c)(3), non-profit, voluntary health organization dedicated to advancing the prevention, early diagnosis and successful treatment of life-threatening blood clots such as deep vein thrombosis and pulmonary embolism. NBCA is the only nonprofit organization in the United States focused singularly on building awareness and community among people who are affected by blood clots or at increased risk for blood clots, including people with clotting disorders, atrial fibrillation, cancer, traumatic injury, and risks related to hospitalization and surgery, lengthy immobility, childbirth, and hormonal birth control.
#Racetostoptheclot
Pick your distance
Running
10K Run/Walk Registration
Includes: -Registration fees -Digital bib and finisher certificate -Access to training/fundraising support to help you achieve your goals -Ability to share pics of your accomplishments and see others -Receive encouragement from teammates all across the country
5K Run/Walk Registration
Includes: -Registration fees -Digital bib and finisher certificate -Access to training/fundraising support to help you achieve your goals -Ability to share pics of your accomplishments and see others -Receive encouragement from teammates all across the country
1-Mile Run/Walk Registration
Includes: -Registration fees -Digital bib and finisher certificate -Access to training/fundraising support to help you achieve your goals -Ability to share pics of your accomplishments and see others -Receive encouragement from teammates all across the country
Typical race-day weather
Based on 10 years of Open-Meteo archive data for this event's race dates in Philadelphia, plus the 3 days either side.
The sun rises at 7:06 AM and sets at 6:29 PM local time (EDT) in Philadelphia on October 10, 2026 — 11h 22m 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
Done this event?
If you've participated in this event, share your experience with other runners
2026 results — Race to Stop the Clot® Fun Run
17 finishers across 3 distances · leading places in the 10K Run/Walk Registration
| Place | Name | Time | Pace |
|---|---|---|---|
| 1 | Brittany Beel | 47:50 | 7:42 /mi |
| 2 | Drew Strombeck | 54:49 | 8:49 /mi |
| 3 | Allison Granos | 54:50 | 8:49 /mi |
| 4 | Karen Adelson | 59:26 | 9:34 /mi |
| 5 | Eric Bruce | 1:30:00 | 14:29 /mi |
Every finisher is on the results page, filterable by distance, gender and age group.
All results by year
Other races near Philadelphia
Different organizers, within 40 miles, in the next three months
Lupus Loop
Stray Cat Scurry
The Race Home: Benefiting Project Home
R.i.p. the Loop with Prtc and Cloudline
🏃 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
Spotted something wrong? Tell us and we'll fix it.