Begin at the Campground parking area, ride the blacktop path for about 150 yards and Scenic River Trail will go off to the right in a left hand turn in the blacktop trail. Note a wooden bridge just in the woods. Follow the white diamonds. This trail will meander through the bottom land for about a mile and then cross Ohio Rt.7 and climb a pretty steep climb with several switchbacks. Believe me it is worth the climb.
After the tough climb you will be rewarded with some awesome singletrack that flows up and down the ridge out to Co.Rd.9. You can turn around there and ride back for a 7 miles quick evening ride, or cross Co.Rd.9 and continue on the NCT connector for another 3.5 miles till the connect with Archers Fork Loop / NCT. Turn around there and ride back for a 14 + mile out and back. Be careful on the decent down that steep switchback laden hill overlooking the mighty Ohio River.
There are a few slightly technical places on this trail but lots of flowing singletrack you can fly on. What a great trail for beginners. If you are a beginner I would suggest getting the directions to the County Rd. 9 parking and ride out to the steep hill (with switchbacks) and just turn around there and ride back. No real difficult climbs or techy switchbacks to deal with.
If you really feel froggy, you can begin at Leith Run, ride across Co.Rd.9 on the connector, turn right when you hit Archers Fork Loop and ride it counter clockwise till you come back to the connect (lollipop style) and then back connector and Scenic River Trail for about a 24 mile killer ride because Archers Fork Loop is up and down, and up, and down, and up and down all the way around. Check out the description for Archers Fork with the Cave and Natural Bridge.