Begin the hike to Tequepis at the gate at the St. Vincent de Paul's Circle V Camp.
Walk through the camp, passing the pool along the way. Oh how inviting! Stop and use the restrooms here if you need to.
As long as you walk straight through the camp, you shouldn't go wrong. The road switches from paved to dirt, but basically you just go straight. Not very far along through the camp, you will reach a creek crossing. Cross the creek.
The road goes uphill a ways, becomming quite rutted in some places. In about 1/2 mile you will reach a sign that points to Tequepis trail off to your left. You should follow this sign.
Tequepis trail is a very well-maintained trail, which is sort of surprising since not that many people I've ever met have heard of it. Mountain bikers use this trail a lot because it makes a nice all day ride from the bottom, up to the summit of Tequepis trail, then along West Camino Cielo toward Refugio for a rewarding downhill ride to Refugio State Beach. It's a car shuttle, unless you are the kind of maniac who would ride into Solvang and complete the loop back along 154! But I digress...
There is not much to say about the trail because it is so easy to follow. It is steep and relentless, but do make sure to take the time to turn around and check out the view. Especially when you reach the very, very steep hill made of crumbly shale and water bars. That's when you first notice how pretty the view is, and probably just when you are looking for an excuse to stop and catch your breath.
When you reach the summit there isn't much there except for 360 degree views of the mountains, wilderness back country, Cachuma Lake, North Goleta, the Pacific Ocean, Sands Beach, the Channel Islands, Broadcast Peak (with all the towers) and West Camino Cielo Road. You can find rocks somewhere to sit on for your lunch break.
To return, hike back down the way you came up, a total of around 8 miles round trip.