Go on a city-wide scavenger hunt, run a 5k in a kilt, and enjoy a bike ride that ends with a lobster roll.

For the weekend of July 20-22, 2018:

Island Open House on The Goslings in Casco Bay

10 a.m. to 3 p.m. Friday. Leave from Mere Point Boat Launch, Brunswick. Free.
An enjoy an afternoon on the islands this Friday. Maine Coast Heritage Trust is hosting an Island Open House on The Goslings in Casco Bay, complete with a free boat ride over, time to wander and explore, and grilled hot dogs for lunch. The boat leaves from the Mere Point Boat Launch in Brunswick every 15 minutes or so throughout the afternoon.

Kilted Kanter

8:30 a.m. Saturday. Belfast Area High School. $20 through July 18; $25 race day; $20 for active duty military. www.runbelfast.org
5K run begins at Belfast Area High School and covers a relatively flat course through the lovely, picturesque and proudly historic neighborhoods of Belfast. Wearing of a kilt is optional (but why wouldn’t you?)
Also: Sprint after a wheel of cheese during the New World Cheese Roll Championship at 1:45 p.m. Sunday, also part of the Maine Celtic Celebration. www.mainecelticcelebration.com

City at Your Feet Scavenger Hunt

11 a.m. to 4 p.m. Saturday, July 21. Portland Gear Hub, Portland. $12 kids, $20 adults. trails.org
Portland Trails’ City at Your Feet is a cross-town scavenger hunt and people-powered trail adventure. Teams compete to crack as many clues as possible and gain points for finding unique locations along the trail network, all while traveling car-free throughout the city. Whether you walk, or bike, bus or pogo-stick, City at Your Feet will get you and your friends and family out the door and exploring all the incredible sights that Portland Trails has to offer.

Springvale Farm Walk

9 a.m. to 2 p.m. Sunday. Farms on Hanson Ridge and Deering Neighborhood Springvale. Free (donations appreciated). www.facebook.com
Self-guided walk through fields, orchards, pasture and woods beginning at McDougal Orchards and ending at Blueberry Bend. The route connects to 10 farms and measures 4.5 miles from start to finish. Want to make a day of it? Walk the full 9 miles (out and back) and support your local farms and trails. Bring a backpack and money to buy food at the farms. An $8 breakfast will be offered at McDougal orchards by the Three Rivers Land Trust.

Yoga at the Fort

8 a.m. to 11:15 a.m. Sunday. Leaving from Portland Paddle, Portland. $55.
Paddle out to Fort Gorges for a 45-minute yoga session. This excursion is open to paddlers of all levels, including beinners. You’ll first learn the basics of paddling, then head onto the water with your paddling guide. At the fort, you’ll have some time to explore and enjoy 45 minutes of yoga before heading back to the mainland. Kayak and paddling gear included. Continues every other Sunday through August.

Maine Lobster Ride

7 a.m. Sunday, July 22. $40-$100 for adults, depending on choice of ride. Camden Snow Bowl, Camden. mainelobsterride.com
Ride winding, country lanes along the rockbound Maine coast, past lighthouses, lupines, and lobster boats. Choose your distance, from a family friendly 15-mile ride or a 38-mile, 62-mile, or 100-miler. Lobster roll lunch at the finish line. Online registration has closed but you can also register the day of the event.