• BENEFITS

Bikes on Ice, ice bike race, ice skating, pick-up hockey games and more to benefit the Community Bicycle Center; Westbrook Skating Rink, Biddeford. $5. www.communitybike.net. 6 to 9 p.m. Saturday.

Chocolate Fest and silent auction benefitting Healthy Kids Family Resource Network; Lincoln Home, Newcastle. $35; tickets must be purchased in advance. 563-1818. 7 to 9 p.m. Saturday.

Chocolate and wine tasting, benefits the Maine chapter of the American Parkinson Disease Association; Atlantic Design Center, York. $10/donation; reservations required by Feb. 3. 363-3004. 6 to 8 p.m. Wednesday. 

• FAIRS/FESTIVALS

Polar Blast, events in Eustis and Stratton; various locations, Stratton. www.eustismaine.com. Today through Saturday.

Winter Festival, snow rafting rides, Groomer Rides, 3on3 Pond Hockey, snowshoeing, ice sculpting, skiing, races, ice skating, a giant snow playground and more; various locations, Auburn. www.auburnmaine.org. Various times today through Sunday.

New England Pond Hockey Festival, benefits local charities; Haley Pond, Rangeley. www.newenglandpondhockey.com. Various times Friday through Sunday.

International Snowmobilers Festival, riding, races, dancing, food and more; various locations, Madawaska. www.isfim.net. Various times Saturday through Monday. 

• SPECIAL EVENTS

TODAY

IBU Biathlon World Cup, skiing and rifle markmanship competition with various community events in Presque Isle and Fort Kent; various locations, Fort Kent. discovernorthernmaine.com. Today through Feb. 10. 

FRIDAY

The Hatter Remains, tattoo convention honoring Lou Robbins and the Mad Hatter Tea Party; Best Western Merry Manor Inn, South Portland. $5 per day. www.deanaskinart.com. Noon to midnight Friday and Saturday; noon to 8 p.m. Sunday. 

SATURDAY

Wilderness Sled Dog Race, with family activities, Maine State Department of Inland Fisheries and Wildlife, Greenville. www.100milewildernessrace.org. 9 a.m.

Seaweed Valentines, make a unique valentine using seaweed; College of the Atlantic (George B. Dorr Museum of Natural History), Bar Harbor. $3.50/donation; $1.50/donation for children. www.coa.edu. 2 to 4 p.m. 

SUNDAY

Star Trek Live, interactive program presented by Mad Science Productions; University of Maine (Collins Center for the Arts), Orono. $17. www.collinscenterforthearts.com. 11 a.m. and 2 p.m.

Antique paper show, postcards, calendars and other paper collectibles; more than 40 exhibitors; Holiday Inn West, Portland. $4. 828-8065. 9 a.m. to 4 p.m. 

• BOOKS/AUTHORS

TODAY

Chats with Champions series, with Kate Braestup, “Beginner’s Grace,” followed by book signing; Skidompha Library, Damariscotta. Free. www.skidompha.org. 10 a.m. 

FRIDAY

David Robinson and Elizabeth Tanefis, “The Saco River,” book signing and author talk; Saco Museum. Free. 283-3861. 6 p.m. 

SUNDAY

Longfellow Days: Poets in the Community, poetry readings as part of Longfellow Days events; Curtis Memorial Library, Brunswick. Free. 729-4439. With Herb Coursen, Edward Gottfried and Anne Bowman, 1 p.m. 

TUESDAY

Lunchbox Friends with Neil Rolde, “Maine in the World,” Falmouth Memorial Library. Free; bring a sandwich, beverage and dessert provided; books will be available for purchase and signing. 781-2351. Noon. 

WEDNESDAY

Brown Bag Lecture Series, with Tess Gerritsen, author of “Ice Cold,” Portland Public Library. Free; bring own lunch. 871-1710. Noon to 1 p.m. 

• FILMS

Film and Discussion Series, Rockland Public Library. Free. “Joseph Campbell and the Power of Myth: Sacrifice and Bliss” Part 4 (1988), 6:30 p.m. today.

Teens Through Time, film series with teen-cenric viewpoint, Portland Public Library. Free. 1960s: “A Hard Day’s Night” (1964), 4:30 p.m. Wednesday. 

• PRO SPORTS

Portland Pirates, AHL hockey team, Cumberland County Civic Center, Portland. $11 to $17. 207-828-4665. www.portlandpirates.com. Vs. Hartford, 7 p.m. Saturday. 

• PARTICIPANT DANCE

Swing dance with the Blue Willow Band, partner not needed, beginners welcome; Deering Grange, Portland. $10. 653-5012. 8 to 9 p.m. lesson, 9 p.m. to midnight dance Friday.

Ballroom dancing, Maplewood Dance Center, Portland. 878-0584. 7 to 11 p.m. Friday and Wednesday; 7:30 to 11 p.m. Saturday.

Saturday Night Dance Party, American Ballroom Dance Academy, Portland. Call for cover charge: 879-5761. Argentine tango lesson at 6 p.m., group lesson at 7 p.m., dance party 8 to 11 p.m. Saturday.

Contra dance with the Band with No Name, all dances taught, dessert potluck, partner not necessary; Falmouth Congregational Church. $5 to $10; free for children under 5. 756-2201. 7:15 p.m. Saturday.