Lace up your shoes for the Western Pacific Half Marathon, 10K, and 5K on March 28, 2026, in Fremont, California! Starting and finishing at the scenic Quarry Lakes Regional Recreation Area, this event offers a distinctly flat and fast course, making it an ideal opportunity for runners aiming for a personal best. The routes primarily traverse well-maintained dirt and fire trails with some gravel sections and a small amount of pavement at the start and finish, running along the historic Alameda Creek Trail and offering picturesque views around the lakes and towards the bay.

Prepare for a smooth and enjoyable race experience with virtually no hills to challenge your stride. Aid stations, strategically placed approximately every 2-3 miles, are renowned for being fully stocked with water, sports drinks, gels, pretzels, candy, and even a "Holy Trinity" of fruit like bananas, watermelon, and oranges, along with other treats. Runners consistently praise the fantastic and cheerful volunteers who ensure a well-supported and managed event. Typical race day conditions in late March boast comfortable highs around 65F and lows around 48F, with a low 8% chance of precipitation, providing excellent running weather.

Beyond the inviting terrain, the Western Pacific Half Marathon distinguishes itself with a connection to history, utilizing parts of the original Western Pacific Trail once crucial for the Transcontinental Railroad. The race, organized by the reputable Brazen Racing, welcomes all levels of participants, including a unique "Hiker Division" for the half marathon, ensuring everyone can enjoy the beautiful Bay Area scenery and earn a coveted train-themed finisher medal. Free parking at Quarry Lakes and readily available course maps and enthusiastic volunteers further contribute to a seamless race day.