Guided Bog Walk

10 a.m. to 12 p.m. Friday. Hidden Valley Nature Center, Jefferson. $5 donation.

Take a walk along the margins of the bog and on the 220-foot boardwalk extending into the heart of the wetlands, which have been forming for over millions of years. There might be a rare yellow-bellied flycatcher spotting, too. (That’s either a bird or my uncle is back in town.) It’s an easy walk – 10 minutes each way – and you’ll be guided by Hildy Ellis, coordinator at Knox-Lincoln Soil & Water Conservation District.

Magical History Tour

10 a.m. to 4 p.m. Saturday. Maine Historical Society, Portland. $35.

fascinating historic sites around Portland that you’ve never seen – and maybe didn’t even know existed! It’s a self-guided tour guaranteed to amaze and amuse both adults and children. Equipped with a map, and at your own pace, you will be greeted by guides at each location ready to share the history of the tour stop.

Mother's Day 5K

9:15 a.m. Sunday. Hadlock Field. $25.

Walk or run this annual 5K on Mother's Day. Slugger and his Mom lead the way on the flat 5K course, which ends at Hadlock Field.

Mothers On The Water

11 a.m. to 2 p.m. Sunday. Hirundo Wildlife Refuge, Old Town. $10.

Mothers On The Water celebrates mothers with a women-only canoe trip. This guided trip explores Pushaw Stream and and stops at Pushaw Dam. Canoes provided. Bring lunch, water and sunscreen.

Fly Rod Crosby Days

Friday-Sunday, May 18-20. Fox Carlton Pond Sporting Camps, Phillips. $10 for three clinics.

It's a weekend of hiking, fly fishing, map and compass clinics, exhibits, food, and more in honor of Cornelia "Fly Rod" Crosby, the first Maine Guide and an avid outdoorswoman and outdoors writer in Maine. Pre-registration is required for some clinics. Free pancake breakfast on Saturday and Sunday.

Bike to the Breweries

1-5 p.m. Saturday, May 19. Meet at Portland Encyclepedia, Portland. Buy your own beers. Rent a bike for $10.

A group ride from brewery to brewery in Portland. It'll be an easy-going pace around town, and if you don't have your own bike, you can rent one from the Encyclepedia for $10. It's free to ride, but you'll be responsible for buying your own beers.