This is an astounding ride which includes two of the best roads in the Bay Area. Morgan Territory is particularly notable; a pretty climb with virtually no traffic, and a long roller-coaster descent on a wide-open one-lane road. Palomares Road at the end of the ride is no slouch either. There’s a stretch of almost 50km, from Clayton into Pleasanton, where there is no civilization at all. Traffic ranges from nonexistent, on Morgan Territory, to heavy through Dublin. Plan to bring extra food and water, and to be in shape before you attempt this ride.
Concord Boulevard is a moderately busy, boring road with a decent shoulder. Clayton Road is a busy, boring road with some decent shoulder. Gotta ride ‘em, they’re the only way out to Clayton.
Marsh Creek is less busy (rural rather than ex-urb), but narrower. It includes a non-trivial climb and a fun descent. On the descent run-out, bear right on Morgan Territory Road. Don’t waste your momentum!
Morgan Territory is among the best biking roads in the Bay Area. It’s one lane and beautiful for most of its length, with virtually no traffic. The climb from this side is wooded and comes at you in waves; it’s only about 300 meters climb but it feels like more. The pavement tends to be spotty. There’s a regional park at the top which usually has water, but I got up there once on a hot day and the fountain was off. Be prepared. After the peak there’s an incredible technical descent on twisty, steep, wide-open one-lane road. There’s still almost no traffic, but this is a two-way road, so be alert for cars potentially coming up the hill at you.
Manning/Carneal/Collier Canyone/Highland Road is a collection of winding, rolling roads through farmland. They tend to be hot and windswept but otherwise pleasant.
Camino Tassajara/Windermere/E Branch/Dougherty/Amador Valley used to be fun biking roads; now they’ve been taken over by burbclave traffic.
This ride bails out early at the West Dublin/Pleasanton BART.
Special thanks to Tom at INL for contributing this ride! See here.