Sprague River isn't much more than a wide spot in the road, but after riding for dozens of miles on the OC&E Trail it will feel like an oasis. There's one small store, a flea market, and a deli for you to stock up on supplies. There are private campsites just outside of town listed on Hipcamp that you would need to book in advance. Alternatively, you can call the local ranger station in Klamath Falls to inquire about dispersed camping in the Fremont-Winema National Forest.