Looking for a place to run in Billings?  Here’s a few suggestions to get you started: 

Swords Park:  A paved gently rolling path with great views of town.  Drive north up 27th Street towards the airport, turn right at the intersection at the top of the Rims then take the first turn on the right to the parking area at the west end of the path.  The path extends about two miles to the east along the top of the rims.  You can continue beyond the east end of the trail on the paved road that runs by Yellowstone Kelly’s grave to Boothill Cemetery.

Norm Schoenthal Island:  A level 1.9 mile gravel trail through woodlands along the Yellowstone River.  From exit 447 on I-90 turn south on South Billings Blvd. (also called Blue Creek Rd.) and drive about half a mile.  Turn right onto a gravel road at the sign for the CEC (Conservation Education Center).  Drive down the road to the parking area and cross the pedestrian bridge to the island.  There is also a 1.2 mile loop on the island.  Another option is to follow the trail that heads east (downstream) from the parking area instead of crossing the pedestrian bridge.  This trail will take you under South Billings Blvd. to Riverfront Park where there are paved and unpaved trails around Lake Josephine and through woodlands.  You can also drive directly to Riverfront Park by turning left off of South Billings Blvd just before the river.

Two Moon Park:  Various level gravel paths through woodlands.  From Main Street in the Heights turn onto Bench Blvd. and drive about six 10ths of a mile to the Two Moon entrance.  Drive down the hill to the parking area. 

This link takes you to a map of bike and pedestrian trails in Billings that shows the routes described above as well as other routes.
http://www.prpl.info/pdfs/BikeTrails.pdf

More routes are described on the Billings Senior High School Cross Country Page.  Some of these routes are over rough terrain or close to cliffs so watch your step!
http://senior.billings.k12.mt.us/senior/activity/xcountry/local_routes/index.htm