Use your peepers.

RIDE
Urban AdvenTours Emerald Necklace and Fall Foliage
What: Three-hour bike tour (complete with fearless crew) through the city’s most breathtaking autumnal flora. Bikes, helmets, and water provided.
Why: Leaf your worries behind.
When: Sat., 2-5 p.m. (rain or shine).
Where: Tour starts at 103 Atlantic Ave. Tickets online at zerve.com. Info at 617-670-0637.

DRINK
Boston Cares Oktoberfest
What: Quaff sammies, scarf Bavarian munchies, and double down on auction goodies to benefit Boston’s volunteer placement program.
Why: Grin and beer it.
When: Tonight, 6-9 p.m.
Where: Samuel Adams Brewery, 30 Germania St., Jamaica Plain (617-368-5080).

EAT
ONCE (One Night Cuisine en Locale) Dinner Party
What: Personal chef and locavore devotee J.J. Gonson whips up a fall-inspired menu (grass-fed short ribs, root veggies) in a top-secret, BYOB location. Guests pay suggested donation.
Why: Your potluck is changing.
When: Fri.
Where: R.S.V.P. to cuisine@enlocale.com for time and location.

Hell Night at East Coast Grill
What: Snack on seriously spicy dishes made from more than fifteen of fall’s hottest chilies.
Why: You’re smokin’
When: Tonight.
Where: 1271 Cambridge St., Inman Square (617-491-6568). Call for a reservation.

GO
RISD Alumni and Student Art Sale
What: Street sale featuring paintings, rugs, jewelry, and clothing from Little Rhody’s right-brained set.
Why: You gotta have art.
When: Sat., 10 a.m.-4 p.m.
Where: Benefit St., b/t Waterman and Hopkins Sts., Providence (401-454-6618).

Photo: Getty Images