Moore Creek Grasshopper

Nov. 9th, 2025 Register

Join us on November 9th for the first Grasshopper 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. will thrill and challenge riders. From the picturesque Napa Valley vineyards we climb up to 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 35 +/- Grasshopper is an XC MTB event, 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.

4290 ft

32 mi

14% Paved

86% Dirt

Route

Start in St. Helena, cross Silverado Trail, and head up Howell Mountain Road. We’ll stage briefly, then roll a mass start up the 3 mi / 900 ft climb to Deer Park Road. After a short paved stretch, we enter the Pacific Union College trail network.

These are the classic Napa Valley Dirt Classic trails—about 6 miles of twisty singletrack—leading to Dan’s Wild Ride. This 1-mile rocky, rugged segment is the day’s most technical. At the junction with Old Dan’s, continue on fast, flowy trails toward lower Moore Creek and Lake Hennessey. Expect wide, swoopy switchbacks and a finishing descent on Eddie the Eagle Trail, along the lake to the finish where the park meets Conn Valley Road. From there, it’s a mellow 4-mile paved spin back to the park and the afterparty.

Ride stats

Total distance: 32.5 miles (timed: 27.5 mi)
Surfaces: ~5 mi pavement, ~3 mi dirt/gravel roads, ~22.5 mi singletrack

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.

$25 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

    Podium/Awards: 2:30

    • Registration opens September 1st 2025 at 6PM and closes November 6th, 2025 at 7pm

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

    • If you are unable to attend due to injury, illness or other reasons the deadline to transfer your registration online to another rider is November 6th at 11:59PM PST. Transfer instructions here

  • Saturday: Location TBD

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

  • U19 M/W, Pro M/W, 19-29 M/W, 30-39 M/W, 40-49 M/W, 50-59 M/W, 60+M/W, Non-Binary

    E bike MTB (Open M/W)

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

  • There is camping available near St. Helena however it is not official event camping!

  • 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)

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

    • A crazy hard, 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.

    • Awesome prizes at the finish from our generous sponsors.

    • Event timing and results.

    • Delicious lunch, cold beer and Best Day Brewing beer at the finish.

    • Podiums for Top 3 All Categories. Top 3 EMTB Overall M/W

    • Cash prizes for Top 5 Pro M/W Overall.

    • Emergency Medical Support en route.

    • Unforgettable stories of adventure.

  • Results 2025

  • Photos 2025