Thriller Lake
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Thriller Lake Endurance Race
The Thriller Lake Endurance Race is a timed loop event at Little Mulberry Park in Gwinnett County, GA on October 24, 2026. Timed races are based on repeated laps of a 2.2 mile paved loop around Miller Lake that also passes through the Karina Miller nature preserve. Each loop has roughly 70 feet of elevation gain and loss.
Distances:
- 12 hour timed race
- 6 hour timed race
- 3 hour timed race
- Trick or Treat Fun Run: single 2.2 mile loop with trick or treat stations
The course includes a start and finish area with typical aid station fare and space for personal crew or aid setups. A water stop is located at the halfway point of the loop. Headlamps are required for timed distance runners once light levels are low. The park remains open to the public during the event, so shared trail etiquette is requested.
The Trick or Treat Fun Run is not timed and includes multiple costumed trick or treat stations with candy. Participants receive a glow in the dark wristband at check in; a special treat bag is available for children. Strollers are allowed; bicycles, scooters, and motorized devices are discouraged unless medically necessary. Coffee will be brewed on site for attendees. Overall winners in the timed races will receive custom awards and prizes; for 2026 overall winners receive gift cards from Classic Running. The event is rain or shine and may be postponed or canceled for safety per park or county guidance. Visit the organization's website for the most recent information.
