Austin Solstice Circuit Marathon
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Event overview
The Austin Solstice Circuit Challenge takes place July 25-26, 2026 at Pace Bend Park, Lake Travis, Spicewood, TX (2805 Pace Bend Road North). The event offers multiple race distances on a timed loop format across the weekend and includes day and night running options. The marathon course is USATF certified (code TX25015LAB). Personal pacers are allowed for the Marathon, 50K and 52.7 Mile events for a $15 pacer fee; pacers may join Marathon and 50K runners after 8 loops and 52.7 Mile runners after 16 loops. Saturday packet pickup and same-day race morning pickup are available.
Course, distances, and services
The course is a 1.64-mile figure-8 loop with about 33 ft elevation gain per loop and a 100% smooth paved asphalt surface. The route passes limestone bluffs, oak-covered hills, and views of Lake Travis. The loop is fully marked, including reflective markers for nighttime visibility, and an aid station is located at the start/finish hub so runners pass an aid station every 1.64 miles.
- 52.7 Mile - 32 loops - 52.7 mi
- 50K - 19 loops - 31.0 mi
- Marathon - 16 loops - 26.35 mi
- 25K - 10 loops - 15.5 mi
- 10K - 4 loops - 6.2 mi
- 5K - 2 loops - 3.1 mi
Amenities include a fully stocked aid station, toilet vault restrooms, camping on a first-come, first-served basis, multiple parking areas, and finisher medals and custom challenge coins. Volunteer roles and a volunteer-runner program are offered with benefits such as an event t-shirt and covered park entry. Visit the organization's website for the most recent information.