Napa to Sonoma Half Marathon course map

Runners start the Napa to Sonoma Wine Country Half Marathon course near the city of Napa at the Cuvaison Carneros Estate on Duhig Road, just off California Highway 121. From there, the race follows a winding path along Duhig to Ramal Road, and then up the affectionaly named “Butt Burner Hill” and downhill into the Carneros wine country, where runners get to take in the beautiful vistas of the Napa-Sonoma Marshes Wildlife Area, the San Pablo Bay and the hills of Marin County.

(MORE: Napa to Sonoma Wine Country Half Marathon event details)

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Note: The course map above provides the approximate route for the race. Though every effort has been made to ensure its accuracy, changes are sometimes made to race routes due to weather conditions, road closures or other circumstances that can require a course to be changed. If you see an error above, email us here.

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541 ft | 593 ft

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Napa To Sonoma Wine Country Half Marathon

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Updated for 2018 route

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Napa to Sonoma Half Marathon course map

Napa-to-Sonoma Wine Country Half Marathon 2021, discover the race course and get the altimetric information Note: "Napa-to-Sonoma Wine Country Half Marathon 2021" is NOT organized by goandrace.com

  Click to start marker animation along the route.

Note 1: Note 1: the path length, here calculated using Google Map, may be different from that declared by the race organizers. Accept as true the latter.
Note 2: the elevation and slope are estimated again using Google and may differ from the real ones. Pay attention to any paths with tunnels or viaducts, because the altitude calculated by Google is not that of the road, but rather the land!
Note 3: the slope is found by calculating the change in altitude of at least 150 m (492 ft) long sections. Level roads: slopes between -3% and +3%. Uphill roads: slopes between +3% and +7%. Steep hill upwards: slopes greater than +7%. Similar classification for descents.

Napa-to-Sonoma is the flagship event in the Wine Country Half Marathon Series. This popular race features a fast and scenic course starting at Cuvaison Carneros Winery and finishing in historic Sonoma Plaza in front of City Hall. The world-renowned Napa and Sonoma Valleys serve as the host of this event, offering the finest in wine country ambience and hospitality. Other activities are scheduled around the race, so bring family and friends and plan to stay and play! You’ll also meet new friends and running colleagues at this iconic event which draws from all fifty states and many foreign countries. This is not your typical running race, this is a lifestyle experience!

Course highlights

Mile 0 – .4: Cuvaison, Domaine Carneros & Butt-Burner Hill

Enjoy the setting as you stretch among the vineyards and irrigation reservoir adjacent to the Cuvaison Carneros tasting room and production facility. Once through the starting line and winery entrance gate you’ll take a sharp left past Domaine Carneros winery on your right and begin your ascent up Duhig Rd, fondly called Butt-Burner Hill for three-tenths of a mile. Go easy and avoid burning too much energy early on the climb.

Mile .5 – 2.2: The Duhig Descent

The descent is well worth the climb! This is the most photographed stretch of course and also the fastest section with great views of Carneros and the Napa/Sonoma Marshes Wildlife Area. It’s mostly downhill for 2 miles but make sure to keep your eyes open. It’s gorgeous! Your first aid station is at the intersection of Las Amigas next to Acacia Vineyard at mile 2.

Mile 2.2 – 4: From Napa to Sonoma County

After making a sweeping right Duhig Rd turns into Ramal Rd as you head west past the vineyards. You’ll encounter a animal farm on the left (sheep, cows, horses, goats) and then a couple of rolling hills. At the three-mile mark you’ll cross over from Napa County into Sonoma County (notice the pavement change) and shortly after Skaggs Island Rd you’ll find aid station #2 at the entrance to a wine production facility.

Mile 4 – 6: Serenity and Vineyard Section

Once the field thins out in this section there is plenty of time to let your mind wander and enjoy the scenery. Take in Mt. Tamalpais to the south, resting peacefully as a backdrop to the Napa/Sonoma Marshes Wildlife Area just off the left side of the course. There will be vineyards to right throughout this section. After making another sweeping right you’ll soon find aid station #3 at Donum Estate at mile 6, home of Robert Stemmler and Donum Estate wines.

Mile 6 – 7.5: The Halfway Mark & Hwy 121

After winding through a few turns and passing a sheep ranch or two you’ll finally begin to encounter civilization. A sharp left on Dale Rd and then a right on Burndale Rd. and you are suddenly at Hwy 121 complete with aid station #4, portable restrooms, live music, Homewood winery, and your friendly CHP. The officers must let cars through at various intervals, so if you are asked to stop briefly, please obey. It will be a short respite before you tackle the 2nd part of the course.

Mile 7.5 – 9.5: Burndale Rd. Farm Animals

After crossing the highway you’ll continue on Burndale Rd. Aid station #5 is on Burndale Road as you pass Herschel Road. This section curves through vineyards and homes before taking you up a small hill lined with farm animals. Sheep, goats, horses, pigs, alpacas, chickens, and cows all reside on this stretch of the course leading up the crossing at Napa Rd. where CHP will again control the traffic and runner flow.

Mile 9.5 – 11.5: Shady Denmark & Gundlach Bundschu Winery

Relief is on the way. You’ll cross over Napa Rd (CHP controls this intersection also) and onto tree-lined Denmark Rd. where trees and shade are abundant. Upon passing water station #6, you’ll see the beautiful vineyards of Gundlach Bundschu on your right, and a table set with small tastes of Gerwurtztraminer wine. Wine not? This is where the GunBunFunRun 5K (8:15am start) merges with the half marathon course, so there may be a blast of fresh, fast energy as you pass this location. You’ll veer left and follow Denmark St. into the path at Sonoma Valley High School. This is a longest straight and flat section on the course. Hanna Boys Center provide the water at station #7 just before the path leads you past the fields and track at the high school.

Mile 12 – 13.1: A Broadway Finish

After a jaunt though the path at the high school you’ll end up on MacArthur Rd for a tenth of a mile then onto Broadway for the final half-mile stretch into Sonoma Plaza. Historic City Hall and its trademark palm trees are your target ahead. As you get closer to the Plaza the cheers get loader until the adrenalin carries you right across the finish line. Congratulations! You have completed the Napa-to-Sonoma Wine Country Half Marathon. Time to rest, hydrate and celebrate with family and friends for the famous post-race Wine & Music Festival in Sonoma Plaza!

Is the Napa to Sonoma Half Marathon Hilly?

Most beautiful course!! This beautiful race begins a Cuvaison winery in Napa and Windsor through the Carneros region bringing you into historic downtown Sonoma. A couple hills, but generally a flat course.

How far is Napa and Sonoma from each other?

How long is the drive from Napa to Sonoma? The direct drive from Napa to Sonoma is 14.3 mi (23 km), and should have a drive time of 23 mins in normal traffic. If you're going on a road trip from Napa to Sonoma, we did the research for you and compiled some great stops along the way — with San Francisco, Calistoga, St.

Is Napa Valley Marathon a Boston qualifier?

Course Details All course are USATF certified; the Marathon course is a Boston Qualifier and a net downhill by over 250 feet.

Is the Napa Valley Marathon flat?

The race's course is primarily rolling hills or flat as it moves through rural California Wine Country. The Napa Valley Marathon has been run in March since 1979, accepts only about 3,000 runners, and is widely considered one of the most scenic marathons in the United States.