HARRA Warm-Up Series

2025 HARRA Warm-up Series Bundles is a Houston, Texas-based fall training series designed for runners aiming to complete a full or half marathon in January. The program offers a progression of races and distances, including Space City 10 Miler, UTHealth Houston Half Marathon and 10K, Houston 25K & 10-Mile, and Coach Andy Stewart's 30K & 10K. The four races form a structured buildup toward the Chevron Houston Marathon and Aramco Half Marathon.

Bundles let participants sign up for all events at once at a discounted, fixed price, even though each race maintains its own signup pages. The series has a charity-minded history, with proceeds supporting local causes such as Memorial Park lighting. The series is not directly affiliated with the Chevron Houston Marathon. Visit the organization's website for the most recent information.