Moore Creek Grasshopper

Sept. 20th 2026 Register

Join us on September 20th in St. Helena, Napa County. Decades of planning, fundraising and trail building in Moore Creek Park, Lake Hennessey, and the lengendary trails at Pacific Union College in Angwin have established themselves as world class MTB destination that will thrill and challenge riders. From the picturesque Napa Valley vineyards we climb up to Angwin. Here the course twists, turns and meanders through the maze of PUC before heading over to “New” Dan’s Wild Ride. This one mile rugged volcanic and serpentine descent will challenge the most talented riders as you make your way to Moore Creek. This 39+/- Grasshopper is an XC MTB event, (The timed race section is 27 mi.) though with the right set up is rideable on a gravel bike. Proceeds of the event support the work done by Redwood Trails Alliance in Sonoma, Napa and Lake County. This event will be a timed race this year, but with 3 fully stoked aid stations it’s definitely a Hopper you can just come to ride, explore and shred!

Elevation profile chart showing climb and descent over approximately 32 miles with height in feet on the vertical axis and distance in miles on the horizontal axis.

5,012 ft

39 mi

14% Paved

86% Dirt

Two children in pink and multicolored shirts riding mountain bikes on a dirt trail near a lake with hills in the background.

Route

Start in St. Helena’s Wappo Park, cross Silverado Trail, and head up to the base of Old Howell Mountain Road where riders will stop and regroup before heading up the 3-mile / 900 ft climb to Deer Park Road. After a short paved stretch, riders enter the Pacific Union College trail network and enjoy ripping single track in the “Maze: and along a segment of the Bay Area Ridge Trail over to the top of Dan’s Wild Ride for a challenging 1,000’ descent into Moore Creek Park . The race will end a the parking area and then riders can enjoy the spin around Lake Hennessey and back to St Helena .

Ride stats

Total distance: 39 miles (timed: 27.5 mi)
Surfaces: ~5 mi pavement, ~3 mi dirt/gravel roads, ~22.5 mi singletrack

 
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Group of people outdoors on a sunny day, some making peace signs, standing next to scattered trekking poles, with a sign that reads support local trails, join us, and a website link, in a rural grassy area with rolling hills in the background.

Redwood Trail Alliance

When you register for the Moore Creek Grasshopper, you’re not just signing up for an incredible day of riding in one of Napa County’s most scenic parks — you’re also supporting the future of trails across Sonoma, Napa, and Lake counties.

$15 of your registration goes directly to Redwood Trails Alliance, the nonprofit building and maintaining world-class trails throughout our Tri-County region.

From the singletrack you're riding today, to new trail projects on the horizon, your contribution helps:

  • Expand trail access and connectivity

  • Make sure our trails are safe and sustainabe

  • Train new volunteer crew leaders to get more trails built

  • Support and grow professional trail builders and stewards

Thank you for being part of the solution and investing in the trails that bring our community together. Because every trail tells a story, and the next chapter starts with you.

More Info

  • Redwood Trails Alliance is a community-powered nonprofit dedicated to building, maintaining, and advocating for more trails and better trails across Sonoma, Napa, and Lake counties. Guided by our mission to create a world-class trail system that connects people with nature, we blend professional expertise with deep local passion to steward and expand the trail networks our communities rely on for recreation, health, and connection.

    Our crews and volunteers maintain beloved trail systems like Trione-Annadel State Park and have built miles of high-quality singletrack at Moore Creek Park and Lake Hennessey in Napa County. In Lake County, we’ve brought new life to the trails at Boggs Mountain Demonstration Forest and are now leading exciting new trail planning efforts on Mt. Konocti and surrounding public lands near Clear Lake, opening the door to an expansive trail future in the North Bay.

    Together, we’re shaping the future of trails, one mile, one park, and one community at a time.

  • Moore Creek Park, Napa Valley (St. Helena)

    Set on the northeastern side of Lake Hennessey just outside St. Helena, Moore Creek Park blends oak woodlands, chaparral ridges, grassy hillsides, and shaded creek corridors into a super-scenic trail network. Expect a mix of singletrack and dirt roads with steady climbs, rolling ridge sections, and lakeside traverses, classic Napa foothill terrain. The park’s system spans ~25 miles and now connects to the Pacific Union College trail network (adding another ~35 miles nearby), creating a larger web of flowy, bike-friendly trails with big-valley views.

    Venue: Wappo Park, St. Helena, CA

  • Early November at Moore Creek usually means crisp mornings, mild middays, and the possibility of a light shower. Trails are tacky and fast after a sprinkle, just watch for slick leaves, wet roots, and shaded rock, while dry spells bring firm hardpack with loose-over-hard corners. Please keep an eye on the forecast in the week leading up to the event; we’ll share any weather-related updates.

  • Saturday: Packet Pick Up TBD

    Sunday: Registration/Packet Pick Up 7:00- 9:00 am

    Start: 9:30 am Howell Mtn Rd.

    Lunch: 1:00

    • Registration opens June 5th

    • Cost of the event is $165. This includes a $15 donation to Redwood Trails Alliance.

    • Day-of registration is available if the event is not sold out and incurs an additional $20 fee on top of standard registration fee.

  • Saturday: Location TBD

    Sunday: 7:00-9:00 am Wappo Park, St Helena

  • Men: Pro, U19, 19-29, 30-39, 40-49, 50-59, 60+
    Woment: Pro, U19, 19-29,30-39, 40-49, 50-59, 60+
    Non Binary

    Ebike Men/Women

  • There is no official event lodging but there are plenty of options in and around St. Helena

  • Napa Booth State Park

  • This is an XC MTB course. We recommend a hard tail or xc mtb.

  • There will be three aid stations.

    Aid Station 1: Mile 6.86 (Entry to trails at PCU)

    Aid Station2: Mile 15 (Top of Dan’s Wild Ride)

    Aid Station 3: Mile 22 (Moore Creek Parking)

    As this will not be a timed event we will have well-stoked aid stations so riders can gather and refuel.

  • Join our Grasshopper Facebook Group for tec talk, trail updates and ride sharing.

    • A super fun adventure with a bunch of your new and old cycling friends.

    • Support trail building by Redwood Trails Alliance

    • 3 Feed zones with Skratch and GU Energy Labs hydration & nutrition. Presented by local shops and clubs.

    • Delicious lunch by Gott’s Roadside St Helena, Mad Fritz beer, Hayfork Wine, and Best Day Brewing NA beer at the finish.

    • Emergency Medical Support en route.

    • Unforgettable stories of adventure.

  • Results 2025

  • Photos 2025