Tom Pearce Park A must in my opinion.
Indian Mary Park Not special except for the location and 'Oregon' factor.
Lake Selmac Not played by me but looks fun.
Riverside Park Not played by me but looks fun.
Riverfront Park In the middle of Roseburg. Easyish pitch and putt course. Tight and somewhat hard to follow w/o a guide or map.
Whistlers Bend Park Wonderful, well respected course along the Umpqua River. Long and lacks signage but includes Yurt camping (with heat and power) and free showers. Worth the stop and a good stay over point as you head north. Need to reserve the yurts.
North Regional Park " The Grove" An excellent course right off I-5. I'll likely review it soon giving it a 4 rating. Be sure to reverse your path after hole #4 to play hole #5- don't follow the
apparently logical flow to Hole #11.
Dexter Park World class course not to be missed. My home course. I'll guide if you'd like (and am able).
Willamette Park Very good course with real baskets and concrete tees.
Adair Park Very good course with real baskets and concrete tees.
Bryant Park An excellent course if it is playable, ie: not underwater.
Waterloo Park Camping available. My only review at this time.
Camp Talaoli Private course not yet played by me. Understood to be easily accessible. Check
Northwest Disc Golf News site.
Woodmansee Park One of the two I've played in the Salem area. A very enjoyable short but technical 9 hole with multiple tees. Get a map.
After this I am less knowledgeable but
Milo McIver State Park should not be missed and
Timber Park is so close and equally enjoyable (to me). Then further north near the Portland metropolitan area there is a multitude of courses including
Horning's Hideout x3,
Pier Park and the newer
L.L. Stub Stewart State Park. There are many more in the Portland area that are worth playing that I have failed to mention. I'm sure others will chime about this area.
Good luck, have fun and let me know if I can be of any assistance.