The Flint Hills Nature Trail is officially opening this weekend.

The public is invited to Rush the Rails, sponsored by Dirty Kanza Race Production Company, Saturday as runners and bikers make their way on the trail, which starts in Osawatomie and goes to Council Grove. Its distance is about 117 miles.

About 293 registered riders and runners will come through Ottawa 8:30 a.m. to 12:30 p.m. Saturday. The public is invited to bring chairs and welcome them west of Main Street on First Street in Ottawa (at the north end of Walnut Street). Food trucks and other vendors will be located along First Street, or Walnut, according to a news release.

The first 50 attendees will receive KALMAR cowbells to “ring” in participants as they come down First Street. Other planned family activities include the Imagination Playground in a Box and bicycle rodeo to learn good cycling skills. Two demonstrations of a new bicycle repair station will take place at 9 a.m. and 10:30 a.m., along with a bike rodeo from 9:30 a.m. to 11:30 a.m.

For parking, the event coordinators suggest parking in the city parking lots downtown, but also they want to encourage walking, running, or biking to the event as an alternative, according to the news release. However, since some may want chairs, driving may be a good option for many.

For more information, contact John Coen at (785) 242-1000; Susan Rader at (785) 242-1411, or Wynndee Lee at (785) 229-3620 or wlee@ottawaks.gov