Square Lake 70.3

SEP
12
2026
Square Lake 70.3 in Stillwater, MN is a USAT certified half triathlon with individual and relay options and a self seeded time trial swim start. Enjoy a scenic two loop bike and a shaded out and back run with plenty of aid.
Sat 12 Sep 2026
70.3 Triathlon

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Square Lake 70.3

Square Lake 70.3 is scheduled for Saturday, September 12, 2026, at Square Lake Park in Stillwater, Minnesota (15450 Square Lake Trail). It is a USAT certified half-distance triathlon that offers individual and team relay options. The event uses a self-seeded time trial swim start. Registered athletes are asked to wear their timing chip on their left ankle.

Course and support

  • 70.3: 1.2 mile swim, 57 mile bike, 13.1 mile run
  • Aqua: 1.2 mile swim, 57 mile bike, no run

The bike course is a scenic two-loop route with bottle exchanges about every 13 miles. The run is a shaded out-and-back course with aid stations about every 1.5 miles providing Hammer electrolytes and gels; all run aid stations also offer Coke, oranges, and bananas. Results are provided by FrontRunnerUSA. A professional photographer will be on site at no additional cost.

Logistics and awards

Packet pick-up takes place at Square Lake Park on race day and includes race bib, timing chip, event shirt if selected, finisher medal, and nutrition samples. Parking at the park requires a one-day pass priced at $7. Awards go to the top overall male and female and the top three male and female athletes in each age group; age groups start at 19 and under and continue in standard 5-year increments up to 70+. Winners must be present to receive awards; shipping is the recipient’s responsibility. Visit the organization's website for the most recent information.

70.3 Triathlon