SR374 dead ends at US33 in the North and SR56 in the South. I normally get on from SR56 and drive North until it ends on US33.
Most of SR-374 is tree lined and surrounded by hills. Much of the road runs through Hocking Hills. The road is very curvy and hilly. The road is a blast to drive and it is very rare that I have had to deal with traffic. On the couple of occasions where I came upon a car they have been kind enough to wave me by since the passing zones are few and far between.
Update contributed by OHwing16 in Dec 2012: This route is a beautiful ride through the state forest. It can be amazing in the fall, but summer and spring are good as well.
Most of the road is well paved. Watch for a small amount of stones and possibly leaves/branches from the trees that overhang much of the road. SR374 is very hilly and twisty. There are a number of very tight corners, but they are well marked. And when they say 15mph they mean it. I was down in first gear with my peg scrapping doing 20mph in a couple of them. I have encounter very little traffic on it but since it runs through Hocking Hills park during the weekends the small section where SR374 merges with SR664 can be busy with cars and RV's.
Update contributed by OHwing16 in Dec 2012: Rollercoaster is the best description. Lots of tight turns and sweepers with continuous elevation changes. Surface quality is good with few flaws.
You ride past Hocking Hills State Park when SR374 merges with SR664. Other than that there is nothing but hills and curves. SR374 does not run through any towns.
Update contributed by OHwing16 in Dec 2012: Not much in the way of food or fuel along the way. South Bloomingville on the south end and Rockbridge are you best bets.
Hocking Hills is is spread over multiple locations, all of which can be found along this road. Ash Cave and Conkles Hollow are easy hikes on concrete paths to interesting geological features and waterfalls. Rock House is a large cave-like structure you can explore, while the Cantwell Cliffs is the largest and most strenuous area to visit.