Johnson City Parks and Recreation is offering a new way to improve fitness for runners, hikers and bicyclists 18 and older. The eight-week Spike it Up Tweetsie Challenge will run from Sept. 16-Nov. 10 and costs just $8 per person.

Each week, participants will set goals to hike, run and/or ride on Johnson City’s Tweetsie Trail for 150 minutes. The program will include a kickoff meeting, group excursions like geocaching, and a special celebration at the program’s conclusion. Everyone will receive a Spike it Up T-shirt.

Register in person at Memorial Park Community Center, 510 Bert St., by Monday, Sept. 17.

For more information, call 423-434-6237.