The Biggest Little Ultra

Sparks Biggest Little Ultra - October 9-11, 2026

Sparks Biggest Little Ultra is a multi-format ultrarunning event held over two days at Sparks Marina in Sparks, Nevada. The event offers both fixed-time and fixed-distance options for runners and walkers, plus a team relay. A portion of proceeds supports the nonprofit Liberty Dogs.

Distances and formats

• 3-hour fixed-time option
• 6-hour fixed-time option (also available as a relay for up to six team members)
• 12-hour fixed-time option
• 24-hour fixed-time option
• 48-hour fixed-time option
• 50 mile fixed-distance option
• 100 mile fixed-distance option

Course, services, and rules

The course is just under a 2 mile paved loop around Sparks Marina with a total elevation gain of 29 feet. The loop is lighted and includes two permanent restrooms and porta potties near the start. Aid is provided at a staffed start/finish aid station 24 hours with real meals during normal meal periods and vegan options; the event is cupless, so runners should use a personal cup for cold drinks. Timing uses an electronic chip transponder system; laps without the chip are not counted. A secondary timing point is located halfway around the loop and live lap totals are displayed. One pacer is allowed at a time; bicycles are not permitted. For fixed-distance races, 50 mile competitors complete 26 loops and 100 mile competitors complete 52 loops. Visit the organization's website for the most recent information.