Location: Killens Pond State Park, Felton
Details: Open 8 a.m. to sunset. $3 per Delaware vehicle; $6 per out-of-state vehicle.
Length: 2.6 miles round-trip.
Local color: This easy-to-moderate packed earth trail skirts the edge of Killens Pond, a 66-acre millpond fed by the Murderkill River. Hikers will weave through hardwood forests and over small streams. Short connector trails link to fishing spots and pond views.
Location: Hawk Mountain Sanctuary, Kempton
Details: $8 Adults and seniors, $4 children over 5 on weekends, $6 for adults and $3 for children on weekdays. Free admission for members and children under 5. No dogs allowed on sanctuary property.
Length: 2.2 miles, one way.
Local color: The Hawk Mountain Sanctuary is home to 14 species of hawks, falcons and eagles, and it has a visitors center with a free Saturday-afternoon lecture series. This difficult hike will take you to the top of Hawk Mountain and along its spine. You'll see the Blue Ridge mountains below, and lots of big birds above, especially during fall migration
West Rim Trail
Location: Ansonia to Blackwell
Details: Open dawn to dusk. Free.
Length: 30 miles, one way.
Local color: This long but moderate trail skirts the western edge of Pine Creek Gorge in Tioga State Forest. You can peer 800 feet down and 2,000 feet across, taking in the wildlife and the foliage of the towering trees below. Through-hiking is popular, but day hikes are still worthwhile to get a taste of what is known as Pennsylvania's Grand Canyon.
Overall Run Falls
Location: Shenandoah National Park, near Luray, Va.
Details: Open year round. Vehicle fee for one to seven days is $15 through November.
Length: 6.5 miles round-trip.