2023 Santa Rosa Marathon prompts weekend road closures

This weekend’s Santa Rosa Marathon will prompt road closures around Old Courthouse Square downtown and other parts of Santa Rosa.

The running event includes races on both Saturday and Sunday, a 5k and 10k on Saturday and a full and half marathon on Sunday.

Drivers will be forced to use detours both days.

Closures in downtown Santa Rosa include Fourth Street between B and D streets and Mendocino Avenue between Fourth and Fifth streets on Saturday from 3-10:30 a.m. and Sunday from 3 a.m. to 2 p.m.

The Sunday full marathon, a Boston Marathon qualifying event, begins at 6:30 a.m. and extends into west Sonoma County past vineyards, at one point running through the barrel room of DeLoach Vineyards.

The half marathon begins at 7:30 a.m. Sunday and runs through downtown Santa Rosa and along the Santa Rosa Creek Trail and Prince Memorial Greenway.

In west Santa Rosa, Sunday’s road closures include Willowside Road between Hall and Piner roads, Guerneville Road between Frei Road and County Manor Drive and Olivet Road between Guerneville and Woolsey roads, from 6-11 a.m.

A post-race party at Old Courthouse Square for all race participants will include a DJ and giveaways. Participants 21 and older can get two free beers from local breweries.

This year marks the marathon’s 15th anniversary.

To see a complete list of road closures, go to pdne.ws/3YNuf0e.

To see the half marathon route, go to pdne.ws/3E7HejT.

To see the marathon route, go to pdne.ws/3QUvmt0.