PADDLEBOARD class, SEPT. 8

Santa Rosa: Learn the basics of stand-up paddleboarding from Rubicon Adventures instructors from 9 to 11 a.m. at Spring Lake Regional Park. Meet at the swimming lagoon boat rentals, 393 Violetti Road. $65, registration required at parks.sonomacounty.ca.gov.

CAMPFIRE PROGRAM, SEPT. 9

Bodega Bay: Interactive discussion about wildlife, coastal ecosystems and cultural history around a campfire from 6 to 7 p.m. each Saturday in September at Doran Beach Regional Park, 201 Doran Beach Road. Bring blankets and beach chairs and meet at the amphitheater. Parking, $7.

BIKE RODEO, SEPT. 9

Santa Rosa: Free Sonoma County Bicycle Coalition bike safety/skill rodeo from 11 a.m. to 3 p.m. at the CHP’s Health Safety Fair, 555 Sebastopol Road in Roseland. Free helmets will be available while they last. There also will be free bike checks and a bike raffle. Visit bikesonoma.org.

WATER BARK, SEPT. 9-10

Santa Rosa: Dogs revel in a leash-free day at the Spring Lake Regional Park swimming lagoon from 9 a.m. to 5 p.m. Admission is $5 per dog or purchase a $30 season pass for all Water Bark dates that also include Sept. 17, 23-24, 30 and Oct. 1. Visit parks.sonomacounty.ca.gov for details and ticket purchases.

COASTAL CLEANUPS, SEPT. 16

Sonoma County: Join volunteers in removing trash from beaches, rivers and creeks in the annual California Coastal Cleanup, 9 a.m. to 12 p.m. at Doran Beach, Steelhead Beach, Sunset Beach and Maxwell Farms regional parks and at Larsen Park in Sonoma County. Contact John Ryan at 707-565-3356. Visit parks.sonomacounty.ca.gov.

OLD GROVE FESTIVAL, SEPT. 16

Guerneville: Stewards of the Coast and Redwoods’ 12th annual Old Grove Festival from 4:30 to 9 p.m. at the Armstrong Woods State Natural Reserve, 17000 Armstrong Woods Road. Americana and bluegrass live music in the open-air Redwood Forest Theater, beer, wine and food. Gates open at 4:30 p.m. Reservations available at stewardscr.org. Call 707-869-2015.

RACE REGISTRATION

Healdsburg: Register for the Oct. 8 Healdsburg Half- Marathon and 5K Run that begin and end at Healdsburg City Hall starting at 7:30 a.m. Registration is $120 before Oct. 1 and $130 after Oct. 1. A wine and beer Octoberfest follow the race. Visit runwinecountry.com for details.

PHOTOGRAPHY EXHIBIT, SEPT. 16

Santa Rosa: Meet Marin County photographer Dave Strauss at a free opening reception and exhibit of his wildlife photography 3 to 5 p.m. at Heron Hall in the Laguna Environmental Center, 900 Sanford Road. Light snacks and drinks provided. Strauss’ “Form and Color: It’s Wild Out There” will be on display through Jan. 3. Visit lagunadesantarosa.org for details.

WOMEN’S RETREAT, SEPT. 16-17

Santa Rosa: Explore the landscape of Pepperwood Preserve, 2130 Pepperwood Preserve Road, at the hilltop Dwight Center for Conservation Science and the Bechtel House retreat cabin from 2 p.m. Saturday through 1 p.m. Sunday. The event includes a guided 1- to 3-mile hike with forest bathing, nature art, catered dinner, yoga class and catered brunch. Bring a tent or sleep in the Bechtel House. For ages 18 and older. $150 per person and $130 for Preserve members. Register at pepperwoodpreserve.org.

James Lanaras