16.4 miles
3,120 ft
-3,111 ft
2,163 ft
High Point

Straight and to the point. Two laps on one of the best trails in the world.

Many people have reported cars being broken into along the road, keep your stuff out of site and safe. Parking in the "inner" dirt parking lot over the bridge and up the janky dirt road may be a better option with less opportunity for a smash and grab.

Weekends are very, very busy in the parking lot, but the trail is able to hold a LOT of folks without feeling crowded.

The ride starts with 2 miles of downhill on a dirt road and then ends with 4 miles of pain on a dirt road. The ride is well worth it even with this extra kick in the teeth.

If you're slow, pull over and let people pass the second you sense someone coming behind you. If you're fast, get ahead of as many people as possible, because you'll catch up to people quickly. If you're worried about it, ride on a weekday.

The second run is always a little more fast and a lot more fun, but it also means you'll be drained. Plan accordingly with plenty of food and water.

Climbing Tractor Trail for the second lap is HARD, but it also gives you the option of bailing out on the way up and doing partial segments of the Flow Trail.

Detailed Description
Trail One List - Double Demo Flow is a 16 mile popular intermediate route located near Santa Cruz California. This mountain bike only route can be used one direction and has a hard overall physical rating. This route includes 8 trails. This route climbs 3,120 ft with a max elevation of 2,163 ft then descends -3,111 ft.
Route Supporters
Local Trail Association
Local trail association
Santa Cruz Mountains Trail Stewardship (santacruztrails.org)
Please consider joining or donating to the local riding association to support trail development & maintenance.
donate to earn trail karma!

Trail Products

31 Reviews & Comments

We hope you've been enjoying Trailforks!

Create a FREE account to view route comments and much more.

Trails in Route


More Stats for Trail One List - Double Demo Flow mountain bike route
  • Avg time
    2 hr 21 min
  • Altitude min
    777 ft
  • Altitude start
    1,633 ft
  • Altitude end
    1,644 ft
  • Grade max
  • Grade min
  • Distance climb
    8 miles
  • Distance down
    9 miles
  • Distance flat
    2,090 ft


  1. Walk south on Hihns Mill Road.
  2. Continue for 4 kilometers.
  3. Turn left onto Sulphur Spring Road.
  4. Continue for 2.5 kilometers.
no votes yet
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Inadequate
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail Flow (Ridden Direction)
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
  • bi-directional trail
  • no data
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
Contribute Details
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
  • most popular
  • popular
  • less popular
  • not popular
Max Vehicle Width

Radar Time
x Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
  • Snowmobile
Winter Trails
Warning A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
x Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.

Save the current map location and zoom level as your default home location whenever this page is loaded.

Trail transparency
3,721 | 1 comments | 2 faves
1,800 | 2 faves
Full Send
Full Send
85 | comments: 0 | favs:
Jan 23, 2023
Demonstration Forest, Flow Trail 4-6 with Sean...
Demonstration Forest, Flow Trail 4-6 with Sean in 4K
113 | comments: 0 | favs:
Nov 21, 2022

Recent Trail Reports Along Route

Flow Trail 1
Sep 6, 2023 @ 11:46am
Sep 6, 2023
Still closed
Flow Trail 6
Jun 20, 2023 @ 2:01pm
Jun 20, 2023
Still closed, ranger says maybe open by August.
Flow Trail 5
Jun 20, 2023 @ 2:01pm
Jun 20, 2023
Still closed, ranger says maybe open by August.
Flow Trail 4
Jun 20, 2023 @ 2:01pm
Jun 20, 2023
Still closed, ranger says maybe open by August.
Flow Trail 3
Jun 20, 2023 @ 2:01pm
Jun 20, 2023
Still closed, ranger says maybe open by August.
more reports »
  • By bkxc & contributors
  • #34124 - 3,052 views