(Editor Note: This "Crater Rim" is near Bend, Oregon, not the more famous "Crater Lake" further south which is a National Park.)

Run around the Crater Rim Trail. This is a 21 mile arduous hike. There is vast stretches of forest, deserts, and mountains that extend from all sides.  This trail is classified as more difficult because of its length and lack of water.  There is an option to climb nearby Paulina Peak (as shown in the attached .gpx file).

Folsom Lake is a reservoir in Northern California formed by a dam built in 1955. It is a popular recreation area as there are many suburban areas on the south and west sides of the lake. The paved route around the lake is a popular choice for cyclists on the weekends as it has no steep grades and vehicular traffic is reasonable.