When is Longest Day 10K?

Longest Day 10K takes place on Jun 20, 2026. That's in 3 months.

Where is Longest Day 10K located?

Longest Day 10K is held in Brookings, South Dakota, United States.

What distances are available at Longest Day 10K?

Longest Day 10K offers the following distances: 10K, 10K.

What is the typical weather for Longest Day 10K?

Based on historical data, you can expect temperatures between 58°F and 79°F on race day. There's approximately a 15% chance of precipitation.

Longest Day 10K (10K) - Jun 20, 2026 | Brookings, SD

Embrace the summer solstice spirit at the Harvey Mills Longest Day 10K, set to illuminate the streets and trails of Brookings, SD, on June 20, 2026. This popular event, a standout 10K in the region, offers both individual and relay options, making it perfect for seasoned runners and teams alike. Starting and finishing at the Fishback Soccer Complex, the course is known for its scenic charm, winding through partially shaded bike paths and pleasant neighborhoods in the southern part of the city, or potentially featuring two loops around the picturesque Dakota Nature Park. Runners can anticipate a generally flat course with minimal elevation changes, promising a fast and enjoyable experience through parks and along well-maintained paths.

Typical race day conditions for mid-June in Brookings feature comfortable highs around 78°F and lows around 58°F, with a modest 15% chance of precipitation. However, participants should be prepared for the possibility of warm and humid weather, as is common during this time of year. While water may be available at the midpoint, runners are encouraged to plan accordingly. What truly sets this race apart is its commitment to the local running community; all proceeds directly benefit the cross country programs at Brookings High School and South Dakota State University.

The Harvey Mills Longest Day 10K, organized by the Prairie Striders Running Club, offers a welcoming atmosphere that reflects the tight-knit running community in Brookings. With its unique timing near the longest day of the year, a reputation for a scenic and mostly flat route, and the impactful support it provides to developing athletes, this race promises a memorable and meaningful challenge. Join fellow runners for a fantastic 10K experience in Brookings, where you can push your limits and contribute to a great cause.