Two Washington Heights parks run free programs all week. Highbridge Recreation Center on Amsterdam Avenue has a full week of evening and weekend workouts, and Fort Tryon Park has a stair-climbing fitness class, a naturalist's walk and a birding morning for kids, all listed by NYC Parks.

Forest Fitness at Fort Tryon Park, Thursday at 7:30 a.m.

Fort Tryon's year-round fitness program meets at Margaret Corbin Circle on Tuesday, Thursday and Saturday mornings. The hour-long class climbs the park's staircases and mixes in stretching, strength exercises, tree identification and forest bathing. Instructor Nancy Bruning leads it, and while all fitness levels are accommodated, every session involves brisk walking and stairs. It is free; RSVP through the Eventbrite link on the Parks listing.

Zumba at Highbridge, Wednesday at 6 p.m.

Instructor Yhajaira Muniz runs an hour of Zumba in the gymnasium at Highbridge Recreation Center, 2301 Amsterdam Avenue. The class is free, with registration through NYC Parks that closes the day of the class.

Cardio Circuit Blast, Friday at 6 p.m.

A high-intensity bodyweight circuit open to all levels, also at Highbridge. Sign in at the front desk and bring a lock: the center allows only a towel, water and a phone in the dance room.

Rise and Restore Circuit Training, Saturday at 10 a.m.

A 45-minute class from instructor Ashley Cabrera that combines bodyweight resistance and conditioning, with modifications offered for beginners.

A guided nature walk at Fort Tryon, Saturday at 10 a.m.

Naturalist Ken Chaya, known for his work on New York City's trees, leads an hour through Fort Tryon's plantings, trees and wildlife, timed for the turn of the season. It starts at Margaret Corbin Circle, is free, and takes registration on Eventbrite.

Basketball clinic for ages 5 to 7, Saturday at 12:30 p.m.

Highbridge's instructional clinic for the youngest players covers fundamentals and drills before league play, with instructor Leudys Cabrera. Any skill level is welcome.

Kid Birding at Fort Tryon, Sunday at 10 a.m.

Alexandra Wang leads a family birding hour that teaches children to spot and identify local birds and the habitats that support them. Meet at the Broadway and Dongan Place entrance. It is free, with registration on Eventbrite.

Yoga en Español, Tuesday, November 10, at 10 a.m.

A Vinyasa class taught in Spanish at Highbridge, all levels welcome. Mats are recommended but not required.

How to go

Highbridge Recreation Center is at 2301 Amsterdam Avenue, near West 173rd Street; the A train at 175th Street and the A and C at 168th Street are the closest stops. For Fort Tryon Park, Margaret Corbin Circle is a short walk from the A train at 190th Street. Each class has its own listing on the NYC Parks events calendar with registration details.

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