From San Francisco, take 101 north to th Black Point Forest/Highway 37 turnoff. Stay left, following 37 to Hwy 121. Turn left onto 121. Say on 121/12 towards Napa. Turn left on Hwy 29. Then left on Hwy 175 until the State Fire Station sign. Turn right here. Pick up a map near the rangers station.
Summary: If you like empty, rolly polly single track trails in pine forests and fast descents, heaven awaits you at Boggs Mountain. It's a fun little mountain with lots of trail options - definitely worth a trip to explore it. The trails are all extremely well marked, and the map (available at the ranger station and online) rates each route with a ski-mountain-like system from super easy green dot rides to technical double-black diamonds. The majority of the trails are intermediate but there's a bit of technical thrown in here and there. My husband and I rode there yesterday and we had a great time!
We sampled the front side, backside and the ridge during our 14.7 mile ride, which had a moving time of 2 hrs 23 minutes and 2,178 ft. in elevation. Here's the route we took and what we thought of the segments:
Interpretive Trail and Creek Trail to Gails (some roly poly, some climbing):
Paralleling the lush banks of one of the few creeks in the park, the climb was really beautiful - I half expected little forest sprites to fly out from behind enchanted trillium leaves. It's mostly roly poly here, but there are a few challenging roots and rock outcroppings to get up and over. One of the things I noticed most though was the absolute absence of poison oak, which made me jump for joy and strip off my long socks and sleeves. Anyway, this was a fun little climb and would definitely be a super fun descent. (Tip #1: bring lots of water – it can get hot in here and we didn’t see anywhere to refill the camelbacks).
Gails (rolly polly):
This was pretty “m’eh” to us. It's just easy, kinda boring roly poly riding through the pine forest. Nothing really remarkable about this section except for the fact that we saw no one on it at all (which was the same story with all the trails we rode in the park).
540 to Boggs Peak Trail to High Point (climb):
Easy rolling climb.
Bear Bones to 400, then Crew Trail, 220 and High Chair (rolling, then descent):
The single track sections were pretty fun and fast, albeit a bit short. Not too challenging and not too remarkable, but still fun.
200 to Berry to Jethro's (descent):
Jethro’s was a very fun section of downhill! It starts pretty steep with a sharp turn, then you can haul it, and then there's a surprise rocky section at the end for a bit of a technical challenge. I loved this section.
300 to Game Trail (rolling):
It's a rolling, easy fire road - not much else to say about it.
Game Trail (descent):
Now this was a super fun 9-minute descent! There are occasional rocky sections for a bit of technical challenge, there are fast, smooth sections, a few tight trees and no one around for miles - yay! This was our favorite trail of the whole ride.
100, Boggs Enduro Hill Climb (fire road climb of death):
This is where you pay for the fun you had on the Game Trail, and you will pay dearly. On the map, this fire road parallels the Game Trail but it shares none of the GT’s joy. It’s a long, hot grind with about 1000 ft in elevation gain. Every time you think you see the top, WRONG – you get another hill to climb! Our legs were fried from a tough ride the previous day, so that made this fire road all the more fun. And bonus, I was going so slowly that the buffalo gnats figured out I couldn’t outpace them so they decided to take the opportunity to try to mate with my eyeballs. Either that, or lay their eggs in my corneas. Don’t worry - you will have plenty of time to decide which is a more repellant thought as you slug your way up this hateful fire road. (Which brings me to Tip #2: wear wrap-around glasses, lest you want amorous gnats to make sweet love to your eyeballs).
200, Bogg’s Ridge Trail (more fire road climbing – joy!):
Just a little more climbing to get to Scout Trail.
Scout Trail and Karen’s (descent):
If you like to bomb it on smooth carpet-like single track, this is awesome fun! It’s a nice reward (and really nice to air out) after the doomed fire road climb.
Hoberg’s Loop and Mac’s (descent):
This is another really fun, smooth and super fast section. We took the long way around the Hoberg loop, which was like riding on berber carpet. Mac’s is a nice, fast descent, so when you hear the Cal Fire helicopter coming in for a landing at the nearby helipad, you will probably think it’s you who is making that whooshing noise as you bomb it down the hill. It’s a great way to end the ride!
Recommended Route: Start at the ranger's station, go up the Interpretive Trail and Creek Trail. If you want a longer ride, do the Gail's/Boggs Peak loop. Definitely do Jethro's and Game Trail, and if you like fast riding, do Scout's to Karen's, Hoberg's Loop and Mac's down - very fun!
Summary: Tons of singletrack, 50% climbing, 50% haul ass. Fun, easy to medium trails. Awesome links of trails, like a freaking spider-web of quality trails. Gotta spend more than a day there to be able to hit it right. I will be back.
Recommended Route: Big springs, charlies, and game, amazing!
Summary: It's one of the best single trac riding I've been on in northern california. The two female rangers are very helpfull if you ask them for a good rout. The male ranger is kind of an old fart who thinks boggs is his own back yard. I ride this place a few times a week and still don't have a favorite trail. Watch out for the pine needles, and bring some snacks in case you get lost. Big springs is a great place to fill up the camelback. Take the creak trail!! It is the best cooldown for any ride, and ends at the helipad.
Recommended Route: It has everything. If you want some easy riding, take the short hobers lupe. If you want some technical downhill and a great workout, big springs and grizzzlys will make you feel alive. The female rangers are a lot of help if you knock on the door of that little modular next to the road. RIDE THE CREEK TRAIL!!
Other recommended trails in the same area: Oak hill mine road in Calistoga
Summary: I like places where you can ride in a maze of trails and actually get lost. Boggs is this kind of place and if you do not have a map, you could find yourself wandering around all day (Thank goodness there are maps at the ranger station, although). I do not understand the people who give these trails such a low rating. They must have been in a bad mood that day or they were just pissed off that they had to drive such a long distance to get there, which is a drawback. If you are an avid mtn biker, such as I,then you like riding in different areas and terrain and do not mind driving to get there.
Boggs has a plethera of trails to get lost in. The ones I went on were not too, too technical. Not nearly as technical as say Upper Bidwell Park or Downieville. The trails were well groomed and very fun. Not too grueling except for a climb on John's Trail and a couple of steep fire road climbs, but you have to take some of the fire roads to hook up with the singletrack. May favorites were Jethro's, Grizzly, Scout, and Gail's, although I did not go on all of them. I've heard Houghton Creek is pretty fun. I would recommend it if you do not mind the driving.
Recommended Route: I took Mac's-Hoberg's-Karen's-Scout, Jethro's, Grizzly-100 to 300 to 600-John's-Thinner's- and ended up with Gail's which was very fun and slightly technical in places coming down.
Other recommended trails in the same area: Downieville, Pioneer Trail, Sweetwater, Foresthill Loop, Bidwell Park, Bullard's Bar