35th Annual Southridge Challenge — Fontana 2026

About this event

The 35th Annual Southridge Challenge brings cross-country, downhill and enduro mountain-bike racing to Southridge USA's Old Bird Farm venue in Fontana on November 14-15, 2026. The organizer's current 2026 schedule confirms the edition, dates, three disciplines and Fontana location; exact daily start times, run order, class list, entry fees and registration opening have not yet been published. Southridge's standing rider FAQ says its race weekends are open across ages and ability levels, do not require an SRC membership or NORBA/UCI license, require every person riding the hill to sign the organizer waiver, wear a wristband and use a helmet, and allow Friday XC course pre-riding once the course is marked. That same standing FAQ describes the usual practice windows as about 11:00 AM-4:00 PM Saturday and 8:00-10:00 AM Sunday, but those times are preserved as historical organizer guidance rather than promoted as the final 2026 event schedule. The race site is the Old Bird Farm at 11798 Live Oak Avenue in Fontana, in the Inland Empire and roughly 50 road miles east of central Los Angeles. Current official event artwork, the official schedule PDF, organizer rules, results archive and current third-party calendar listings are linked below. Riders should check the organizer site and Facebook page before travel because the schedule is explicitly subject to change and no current registration form, weather protocol, capacity or final race bulletin was live at verification time.

At a glance

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