The second annual “Rock, Chalk … run!” will be at 8 a.m. June 13 at Clinton State Park.

There will be three runs. The 10K race costs $30, the 5K costs $25, and the 1-mile run is free. Runners get to compete on the Ironman 70.3 Kansas course — the day before that event.

The “Rock, Chalk … run!” will benefit Health Care Access, a nonprofit clinic that serves uninsured, low-income residents of Lawrence and the Douglas County.

To register for the race or learn how to volunteer, visit rockchalkrun.com or call the clinic at 841-5760.