Distance: 15.6 out and back
Elevation gain: 2490 ft
(A Best of the Best descent)
This is another of those pure climbs out of the Wine Country valley floor. Bestrides has four of them: Pine Flat Road, Geysers Road, Cavedale Road, and this one. They are all peachy, they all climb through similar, moderately pretty scrub much of the time, and they’re all fairly long, hard climbs without being brutal (7-10%). Obviously I like them all. How to know which one to ride first? Here are some distinguishing features:
Geysers is the only loop among the four (though Cavedale and Ida Clayton can be made into one). Geysers and the loop version of Cavedale are the only two to include sweet flat valley riding. Geysers has a more varied contour than the others. Much of its road surface is rough, but readers tell me it’s been partially improved recently. It’s by far the longest, so it has by far the shallowest (easiest) climbing.
Pine Flat has the steepest pitches and has a nice flat break in the middle of the climb (the eponymous Pine Flat). It can’t be looped.
Cavedale and Ida Clayton have both been repaved recently and have glassy surfaces.
Cavedale goes up to a summit and down the back side, so you get a super-sweet roller coaster between the summit and the turn-around that is one of my favorite legs in the Wine Country.
Ida Clayton climbs steadily for 4 mi., then rolls and climbs mildly for another 4 mi. through beautiful woods on a road surface that ranges from OK to terrible. I think Ida Clayton’s descent is the best of the four.
Which one is the hardest? Here’s a quick look at the stats (very approximate) on the climbing segments only for the four rides:
Geysers: 22 miles, c. 180 ft/mile
Pine Flat Road: 10.6 miles, c. 340 ft/mile
Cavedale: 5.1 miles, c. 530 ft/mile
Ida Clayton: 4 mi, c. 620 ft/mile
As you can see, the shorter the ride the steeper the gradient. And sometimes averages lie—Pine Flat Rd. has some genuinely frightful pitches the others lack.
All four rides share the virtue of isolation: there’s really little reason for a car to be on any of them. Because Ida Clayton goes from Hwy 128 to Middletown, as does the much more car-friendly Hwy 29, you can expect exceptionally car-free riding. When I rode it, on the 8-mile ride in I met 0 vehicles. On the ride out I met two.
Ida Clayton Rd. heads straight up from Kellogg, an invisible community on Hwy 128, the highway that runs through St. Helena and Calistoga—think of it as a few miles north of Calistoga. This being flat agricultural land, there is roadside parking everywhere. The road climbs robustly and steadily, but never ferociously (nothing prolonged over 10%), for 4 miles, at first through pretty woods and then through typical Wine Country hillside scrub—not gorgeous but handsome in its way. The road is posted as “one-lane,” and it’s without shoulder, fog line, or center line, but it’s wide enough for two cars to pass, cautiously, and wide enough that the descent on the return is a pleasure. The road surface, recently redone, is flawless for the first 4 miles, then not so. The pitch is fairly constant but the road is rarely straight and there is a lot of variety in the curves. As you ascend, you start to get those grand vistas of Calistoga’s valley below.
Four miles in you hit a mini-summit and the ride changes completely. From now on you’re in pretty deciduous trees, the road contour wanders up and down easily, mostly up (there’s a noticeable pitch in the last 0.8 miles), and that glassy road surface soon turns into old, broken pavement that is at times really wretched. It’s more like mountain biking. Go for the scenery, or turn around at the mini-summit.
Eight miles in the road turns to dirt. If you continue, in 2.2 miles the pavement returns and in 3 total miles you emerge onto Hwy 29 at the southern outskirts of Middletown, from whence you can easily bop over to Harbin Hot Springs for a soak, then return to Kellogg via major connector Hwy 29. I’m told the dirt is rough and 29 is unpleasantly busy. For other loop options see Adding Miles below. But if you loop the ride that you’ll miss the Ida Clayton descent.
The climbs on Cavedale and Ida Clayton are almost indistinguishable, and the descent on Cavedale is iffy, so the descent on Ida Clayton should be equally iffy, but it isn’t. I guess the slight increase in road width makes all the difference, because this descent you can really carve. Hence the Best of the Best rating.
Shortening the ride: Ride to the mini-summit and turn around.
Adding miles: Our Pine Flat Rd. ride is 9 flat, rideable miles north on Hwy 128. The southern edge of our Geysers Rd. ride is a stone’s throw north of PFR.
If you want a loop route, are turned off by the traffic on Hwy 29, and are up for some miles, you can ride to the end of Ida Clayton, ride through Middletown, and take Butts Canyon Rd. to Pope Valley Rd. through Angwin, Deer Park, and Calistoga back to Kellogg (thanks, Brian). All very good riding, c. 56 miles.
If you want to ride alongside the vineyards on the valley floor, at the bottom of Ida Clayton you’re near the northern end of the Napa Valley Vine Trail, a bike trail that stretches (with gaps—it’s a work in progress) from Napa to Calistoga, usually within sight of the highway. The leg from St. Helena to Calistoga is brand new (as of 1/25) and particularly sweet.
Directly on the opposite side of Hwy 128 from the base of Ida Clayton is Franz Valley Rd., which introduces you to a delightful warren of pretty, largely flat roads—Franz Valley Rd., Franz Valley School Rd., Petrified Forest Rd., and all the others between Hwy 128 and Santa Rosa to the west. Feel free to wander. For more details, see the Adding Miles section of the Pine Flat Road post.