Main Calendar
Pre-Hyannis Father’s Day Car Show Event
4:30 PM - 7:30 PM
This free show at Patriot Square, Route 134 in South Dennis is from 4:30 p.m. until dusk. All variety vehicles and all years are welcome. capecodclassics.org
Understanding the Invasive Green Crab Species
6:00 PM - 7:00 PM
Join the Alliance to Protect Nantucket Sound as we take a fascinating look at one of the most disruptive—and resilient—invasive species in our coastal waters: the green crab. Marine biologist Carolyn Tepolt of Woods Hole Oceanographic Institution will ...
Business After Hours with CCYP at the Red Nun
5:00 PM - 7:00 PM
Join our fellow Dennis chamber members and Cape Cod Young Professionals for a joint networking event featuring, food and festivities! Registration begins soon. This is a free event for Chamber members and their guests.
Wildflowers and Wildlife: Sandplain Grasslands and Heathlands of Cape Cod & Nantucket
6:00 PM - 7:00 PM
Please join the Alliance to Protect Nantucket Sound and Dr. Sarah Bois, Director of Research and Conservation at the Linda Loring Nature Foundation, for a deep dive into the botanical and biological wonders of the coastal grassland ecosystems of ...
Business After Hours with CCYP at Pelham House Resort
5:00 PM - 9:00 PM
Join fellow Dennis Chamber members and CCYP for an evening of networking, food and cash bar at the Pelham House Resort in Dennis Port. Registration opens soon.
Old Yarmouth: Life During the American Revolution
4:00 PM - 6:30 PM
In celebration of America’s 250th Anniversary, the Dennis Historical Commission and the Yarmouth Historical Society are combining resources to present this historically significant exhibition of artifacts, including maps, documents, furniture, fashion ...
Annual Dennis Conservation Clean Up & Celebration
Volunteers join in for a town-wide litter clean up followed by a celebration at Johnny Kelley Park in South Dennis with food, games, and local nonprofits exhibiting the work they do.
Author's Talk at West Dennis Public Library
2:00 PM - 3:00 PM
Christopher Setterlund will be discussing his latest book, In Their Footsteps: The Interesting People, Places, and Events of Cape Cod History.
A History and A Future for Land Conservation on Cape Cod
6:00 PM - 7:00 PM
Mark H. Robinson, long-time director of The Compact of Cape Cod Conservation Trusts, will present a lively presentation on the “A History and A Future for Land Conservation on Cape Cod.” This presentation will provide an overview of themes driving ...
A History and A Future for Land Conservation on Cape Cod
6:00 PM - 7:00 PM
Join the Compact of Cape Cod Conservation Trusts, on Zoom, for a lively look at the forces that shaped land conservation on the Cape with a special focus on Nantucket Sound. Register at: https://tinyurl.com/Land-Conservation
May 5K Road Race 2026
10:00 AM - 12:00 PM
5K Run or Walk to benefit the Dennis Chamber of Commerce. Race begins and ends at scenic Mayflower Beach in Dennis Village. All ages are welcome. Race uses the MYLAPS BibTag timing system. Details coming!
Memorial Day Observance
10:00 AM - 11:00 AM
A ceremony at 10 a.m. at Liberty Field, 485 Main St., South Dennis, honoring all United States war veterans. Includes a guided tour of the Old South Dennis Cemetery.
Opening Night at the Cape Playhouse
7:30 PM - 10:00 PM
Celebrate the return of Broadway talent from June through August. The summer line-up features five shows, opening with Nat Zegree’s Mozart to Pop Chart. The Cape Playhouse is located at 820 Main Street, Route 6A in Dennis. capeplayhouse.com
Author's Talk at West Dennis Free Public Library
2:00 PM - 3:00 PM
Don Wilding will be discussing his new book, Prohibition on Cape Cod:: Running the Rum In.
YD Red Sox Opening Day
4:30 PM - 8:00 PM
The Yarmouth-Dennis Red Sox starts the season facing Harwich at 4:30 p.m. at Red Wilson Field, 210 Station Ave. in South Yarmouth. From mid-June through mid-August, the sounds of baseball fill the air as the Red Sox renew their local rivalries. ...
Cape Cod Hydrangea Festival
10:00 AM - 4:00 PM
Welcome the summer season with the 10th Annual Cape Cod Hydrangea Festival. The 10-day festival features tours of local gardens. $5 per person per garden. 10 am to 4 pm. Every garden is paired with a benefiting nonprofit organization. Visit website for ...
Cape Cod Baseball League’s Annual All-Star Game
4:00 PM - 8:00 PM
This year's event will be held at the home of Harwich Mariners at Whitehouse Field. More at capecodleague.com.
Dennis Conservation Land Trust Annual Auction
5:00 PM - 9:00 PM
Dennis Conservation Land Trust’s Annual Auction fundraiser 5-9 p.m. at The Dennis Inn is an evening of delicious food, drink and entertainment to support and protect the very best of nature in Dennis. The evening culminates in a fast-paced, lively ...
Dennis Festival Week
12:00 AM
Wrap up the end of summer during the Dennis Chamber's Festival Days, a week-long celebration, starting today through Saturday, August 29. Festivities start with the Antique Car Parade on Sunday, Aug. 23 at West Dennis Beach followed by Field Day on ...
68th Antique Car Parade
11:00 AM - 12:00 PM
Show off your prized wheels and join us for a cruise from West Dennis through Dennis Port and South Dennis ending with hamburgers and hot dogs for sale at the Dennis Center for Active Living parking lot. We welcome classic cars and trucks pre-2000. ...
Field Day 2026
4:00 PM - 7:00 PM
Fun for the entire family from 4:30 to 7:30 pm at Johnny Kelley Recreation Area in South Dennis. Events include a pie-eating contest food trucks, DJ music, fire department children's challenge, cornhole tournament and more.
Annual Fireworks and Beach Party 2026
5:30 PM - 9:00 PM
Wrap up the summer with a BANG at the Annual Beach Party, Bonfire and Fireworks at West Dennis Beach. This free event begins with live music at 6 pm and ends with a spectacular fireworks display starting around 8:15 pm. A beach bonfire is lit at 5:30 ...
Year-End Appreciation Party at the Sailing Cow
Celebrate the end of the season with us at the Sailing Cow in Dennis Port.
Artoberfest
3:00 PM - 7:00 PM
Join us at the Cape Cod Museum of Art for our ARToberfest celebration from 3-7 p.m. Taste beer and food from local breweries and restaurants and vote for your favorite. Games, music and raffle prizes.
Taste of Dennis 2026
5:30 PM - 8:30 PM
Sample signature dishes from over a dozen local Dennis restaurants and caterers. Bid on merchandise, services and experiences from Dennis Chamber members in our silent and live auctions. This year's event will be held on two floors at the Pelham House ...