=PR= Races: Birthday Bash 5K

Get ready to celebrate fitness and fun at the =PR= Races: Birthday Bash 5K on Sunday, July 19, 2026, in Fairfax, VA. This vibrant event, hosted at the lively Fairfax Corner, celebrates Potomac River Running's anniversary with a festive atmosphere perfect for runners of all ages and abilities. Participants can choose between a challenging 5K or a delightful 1K Fun Run, making it an ideal outing for both seasoned athletes and families. Historically, the course at Fairfax Corner features a paved, wide route, though runners should prepare for some hills and limited shade, which can make for a tough challenge under typical July conditions. On race day, expect typical highs around 86°F and lows near 67°F, with a 13% chance of precipitation.

What truly sets the Birthday Bash apart is its lively, celebratory spirit. Runners can look forward to a memorable post-race experience, complete with cupcakes, raffles, and engaging activities from various brands. Every pre-registered participant receives an exclusive soft-style =PR= t-shirt, a unique race bib, and free race day photos to capture their accomplishment. The event also offers a digital finisher certificate and post-race snacks, with awards recognizing the top overall male and female finishers, as well as age group placers in the live race.

The start and finish lines are conveniently located at Fairfax Corner, offering ample parking and an energetic hub for all race day activities. Packet pickup is easily managed at the local =PR= Fairfax store, allowing participants to gear up and soak in the pre-race excitement. Join the community for a high-quality race known for its excellent organization and celebratory vibe, ensuring a fun and rewarding experience for everyone involved.