Join Run the Undergrad for a thrilling Halloween-themed running adventure on October 24, 2026, at Porter Park in Rexburg, where you'll dash through the beautiful tree-lined trails and open fields while encountering creepy decorations, costumed characters, and spine-tingling surprises waiting to greet you. Whether you're tackling the half marathon or the 5K, you'll experience the perfect blend of festive fun during daylight hours that transforms into an exciting, goosebump-inducing challenge as the sun sets. Grab your favorite costume, embrace the seasonal spirit, and get ready to run your heart out alongside runners of every ability level in this unforgettable autumn celebration.