For more information about Preservation Parks of Delaware County or to register for a program, call 740-524-8600, extension 3 or e-mail register@preservationparks.com. The offices of Preservation Parks are at 2656 Hogback Road in Sunbury.

For more information about Preservation Parks of Delaware County or to register for a program, call 740-524-8600, extension 3 or e-mail register@preservationparks.com. The offices of Preservation Parks are at 2656 Hogback Road in Sunbury.

No registration is required for these programs:

* Golden Marathon, 9:30 a.m., Monday, July 29. One- to two-mile hike for older adults. Char-Mar Ridge Preserve, 7741 Lewis Center.

* Thursday Evening Concert in the Park, 7 to 8:30 p.m., Thursday, Aug. 2. Agent 99 will play '70s pop rock music. Free. Bring blankets, chairs and refreshments; no alcohol. All ages. Gallant Woods Preserve, 2151 Buttermilk Hill Road.

* Astonishing Race III, 6:30 p.m., Saturday, Aug. 3. Ages 7 and up. Join us for Preservation Parks' version of The Amazing Race. Participants form teams of two or more and compete to complete various challenges in the park. To register, call 740-524-8600 extension 3, or email register@ preservationparks.com. Hogback Ridge Preserve, 2656 Hogback Road.

* Golden Marathon, 9:30 a.m., Monday, Aug. 5. One- to two-mile hike for older adults. Highbanks MetroPark, 9466 U.S. Route 23 N.

* Thursday Evening Concert in the Park, 7 to 8:30 p.m., Thursday, Aug. 8. Live bluegrass music featuring Muleskinner Band. Free. Bring blankets, chairs and refreshments; no alcohol. Gallant Woods Preserve, 2151 Buttermilk Hill Road.