The Run for the Hills 5K is scheduled for May 3 at the Blue Earth Plaza, outside the Flint Hills Discovery Center, 315 S. 3rd St. Registration begins at 7 a.m. with the race starting at 8 a.m. Cost is $25 to run and $20 to walk. Runners can register at Manhattan Running Company or Salina Running Company. Prizes, awards and food will be available. The run/walk will kick off the first Flint Hills Day, sponsored by the Manhattan Chamber of Commerce. Geocaching and Indian dancing are also planned. The run will benefit “Solutions for Seniors” provided by North Central-Flint Hills Area Agency on Aging.