A Bay Area Favorite for Endurance Events.

Saturday, April 24, 2027. The 13.1-mile course starts on Mt. Diablo at 3,849 ft and finishes at Arbolado Park in downtown Walnut Creek, dropping 3,664 ft along closed park roads and quiet residential streets. A controlled descent on closed park roads. Cool morning air, panoramic views of the Central Valley to the east and the Bay to the west. The course curves through the oak savannas of Mt. Diablo State Park. Runnable grades, shaded turns. Out of the park and onto rolling country roads. The course flattens slightly, an ideal stretch to settle into goal pace. Quiet residential streets give way to the tree-lined avenues of civilization. The crowd thickens. The finish arch waits at Arbolado Park.

Join this rich tradition going strong since 1993 in downtown Walnut Creek. A turkey trot 5k and 10k plus three ages of kids fun runs. Something for the entire family! Whether coming to compete, or simply in it for the consume contest and time with those closest to you, this celebration embodies what this time of year is all about, giving thanks. So join us in November on Thanksgiving morning to earn those calories back before the big feast. Registration opens in late July.

Join us May 3, 2026, for one of the Bay Area's oldest running traditions happening on the downtown streets of Danville. Events for the entire family. Kids fun runs, USATF certified 5k & 10K courses, along with the buddi love mile (pet owners). Top one mile runners also descend on the town of Danville to run the Mile of Truth. Danville hosts the Pacific Association Grand Prix Championship for the 1 mile event.  All of these flat, fast, family friendly events are perfect for runners of all ages and all abilities.

The event served as a tribute to the brave men and women who gave their lives in defense of America's freedom through their service and sacrifice in the armed forces. Each year, a different branch of the military wss honored, with runners coming together to pay their respects to all who have served.

In 2025, the event expanded to honor First Responders as well, showcasing the Tobin Bolter Memorial 5K—dedicated to Officer Bolter, who made the ultimate sacrifice in the line of duty in 2024.

In 2024 and 2025, with the event being held at Briones Regional Park, participants faced challenging elevation changes and navigated a scenic trail system featuring rolling hills and breathtaking views—a fitting backdrop for a day of remembrance, resilience, and respect.

The Walnut Creek Running Festival marked its 12th year in 2022 and proudly celebrated the 10-year anniversary of its half marathon event. This beloved tradition drew runners from across California and beyond, becoming a seasonal highlight for the city. Held during the festive holiday season, the event immersed participants and spectators alike in the charm of downtown Walnut Creek—with its inviting mix of ice skating, local cuisine, live entertainment, and vibrant shopping scene.

Established in 2011, the festival was created with a mission: to raise much-needed funds for local high school athletic departments. Proceeds from race registrations and generous contributions from community business partners helped provide essential equipment and support for student-athletes, easing the financial burden on families and enabling more students to participate in school sports.

The race course itself offered a scenic experience, guiding runners through a loop around Walnut Creek and winding through several of the city’s most picturesque parks. A beautiful and energizing way to finish the year—whether chasing a personal record or simply soaking in the celebratory atmosphere.

Series Runner connects runners with great events. Runners book their event through Series Runner and get rewarded for accumulating miles. Book - Run - Reward! That simple.

In 2016, Sonoma Raceway called upon Team Blue Sky Events to create  a race to occur in conjunction with their annual Grand Prix race in the month of September. Owning several hundred acres behind the track, this made for an incredibly fun and challenging 5K, dubbed "The bay areas most difficult 5K." Runners who registered also received free entry into the grand prix event that day. The result was pretty remarkable and led to the exposure of this area as a playground for future outdoor events. Enter Tough Mudder... At least for a few years anyways...

Having roots in cycling and Ironman events, we felt it necessary to test the human endurance levels by creating a cycling race that started at the base of the popular Mt. Diablo, a widely known training ground for cyclists. The race started at the entrance kiosk on the north side and ended at the top in the parking lot. We had a lot of fun with this event and met some pretty remarkable cyclists form all over California.

Having a love for all things sports, TBSE by way of one of its race directors inherited this league that was on the rise, and is still in existence today in Walnut Creek. Both Co-ed, experienced, and novice flag football players all came out to play in different level leagues, making for a fun and in some cases a very competitive time.

Back when USA Cycling was known as NORBA, USATF was just beginning to take shape, and race registration meant filling out paper forms on race day with bibs handed out on the spot, a unique challenge was born. This mountain event invited both runners and mountain bikers—along with hybrid athletes—to choose their discipline and embark on a grueling trek from Antioch, crossing two mountains en route to the town of Clayton. The mountain bike race kicked off at 8 a.m., coinciding with a 5K run that started simultaneously in Clayton. Thirty minutes later, the long-distance runners began their ascent. For five years, this event was a Bay Area favorite, attracting top mountain bikers and runners from across the region.

In the early 1990s, a group of multi-sport athletes training at Walnut Creek Sports and Fitness Club (now Forma Gym) sought a new kind of challenge—something competitive and intense, but tailored to their gym community. Since no such event existed, we were brought in to design one that would push the cardiovascular limits of top triathletes and anyone bold enough to tackle a three-discipline competition. By implementing a tiered staging system based on age and skill level, we created a multi-hour event that, while contained indoors, delivered the intensity and excitement of an outdoor race. The result was a well-organized, high-energy experience that everyone thoroughly enjoyed.