Welcome to Norcal Flow Expeditions

Mountain Bike Tours & Lessons

We want you to love biking and Northern California as much as we do!
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Marin County
Muir Beach, Muir Woods

Explore Beautiful Redwoods and Beaches

We will pick you up at your location in San Francisco in a luxury vehicle, and take you over the Golden Gate Bridge to beautiful Marin County to explore Muir Woods on a high-end, full-suspension mountain bike.


A great way to see spectacular views of the Northern California Coast, the redwood forests of Muir Woods, and Mount Tamalpais. 

This is a half-day experience, around 5 hours from pick-up to drop-off.

Riding gear, hydration, snacks are included. 

Marin Half Day Tour Prices:


Request an E-Bike - $450

*Discounts for 2 or more guests


Multi-Day Tours

16-Mile Downhill!!
And more...

Dropping 5,000 vertical feet in 16 miles from Packer Saddle to Downieville, the Downieville Downhill is the longest and most demanding downhill mountain bike race trail in the nation. This prestigious ride follows the paths of the Sunrise Trail, Butcher Ranch Trail, Third Divide Trail and First Divide Trail. It's big, it's bad and it's beautiful.

The downhill ride features banked turns, reverse grades, rolling dips and even a few G-outs. It is an action-packed, adrenaline-rushing, heart-pounding trail!

Downieville Private Tour Price:

$150/person (bring your own bike)

*Discounts for 2 or more guests


$150 high-end, full-suspension bike

$200 high-end, full-suspension E-Bike

*Place to Stay:

We have a beautiful one bedroom apartment with amazing view and the sound of the river available (sleeps 3) for rent for $250/night. 5 minute walk to town. Contact us for details.


We are happy to take you mountain bike riding, no matter what your skill level. From beginner to expert riders, we will customize your ride to your skill level.

Our tour destinations include Marin County, Half Moon Bay, Pacifica and Santa Cruz. For multi-day trips we go to Downieville and Lake Tahoe. Pick-up service available, within San Francisco.

Beginner riders will be able to get out and experience mountain biking in a comfortable environment, while checking out amazing views, complimented by trails that match to your skill level. Perfect for those who want to get some fresh air, see the Bay Area from a different perspective and exercise within their comfort zone.

Intermediate mountain bikers will explore changing landscapes with a combination of fire roads and flowing single track with mild climbs.

Expert riders will enjoy plenty of steep descents, flowing trails, epic views and technical terrain. Expect an exhilarating ride!

Request your tour here or call us directly if you'd like more information about our tours.

*Electric bikes available on request.



$350 for a half-day tour
Transportation, hydration and power food is included. Estimated time is 4-5 hours, from pick-up to drop-off.

$450 for a full-day tour
Transportation, hydration and power food is included. Estimated time is 6-8 hours from pick-up to drop-off.

*All tours include:

High-end full-suspension bikes, helmet, gloves, elbow and knee pads (if needed) and pedals of your choice included in all tours.

*Electric bikes available on request

We offer discounts for groups of 2 or more riders.

We cater our tours specifically to your level of skill and fitness. Request tours below or call us for more information to customize your mountain bike adventure!

"This was my first time on a mountain bike tour. I had a blast with Marcel as my guide. We rode a half day tour at China Camp Park on a 2018 Santa Cruz Bronson.


The service and equipment is top of the line and a value for the thrills these tours deliver. I really appreciate how Marcel took the time to not only custom fit the suspension to me but also taught me so much about the mechanics of a full suspension bike as well as some really useful riding tips.


I also really appreciate how Marcel basically takes care of everything from coffee, water, snacks to even taking pictures!


I truly felt pampered and spoiled with all the tour had to offer. You can hardly tell the miles you are putting in with how these guys set you up."

-Roberto Oliverez

Read more reviews here


We teach mountain biking skills and techniques in a fun and casual environment.

From the basics, including how to mount and dismount your bike, how to balance your body while riding, how to go uphill and downhill to more advance techniques including pedaling, braking, gearing/shifting, climbing and descending, switchbacks, to expert techniques for riders wanting to learn how to launch, drop and jump, we have the perfect lesson for your skill level.

We also cover trail etiquette and basic bike fit and maintenance.

Request your lesson here to get started, or call us directly for more information.


$350 Half day lesson, per person.

Transportation, hydration, and power food is included.

High-end bikes, helmet and gloves included in all bike rentals.

Request your tour below to set up your mountain bike lesson today or call us for more information.

*Our mountain bike rentals are exclusively for tours and lessons.


We love giving tours and you can tell by our reviews!

Google Reviews

Marcel is skilled, knowledgeable, and safe. I would give Norcal Flow and Tours 10 stars if I could!

Yelp Reviews

Marcel was helpful and informative, and the ride was incredible. Thanks for a great ride!

Trip Advisor Reviews

Marcel arrived on time, in a great vehicle. His knowledge and persona made for a really great day out.


Download this form, fill it out, and email it back, or print it out and bring it with you for your tour/lesson