THURSDAY, APRIL 23
Bike Maintenance Basics. 6:30 p.m. REI Store, 1789 28th St., Boulder, 303-583-9970.
Nature Detectives in the Field — Join the Frog Chorus. 10 a.m. Walden Ponds Wildlife Habitat, 75th Street between Valmont and Jay roads, Boulder, 303-678-6215.
Orientation at Community Cycles. 6 p.m. Community Cycles, 2805 Wilderness Place, Suite 1000, Boulder, 720-565-6019. Registration required.
The World’s Worst Ski Tour — Skiing across the Arctic Ocean. 8 p.m. Neptune Mountaineering, 633 S. Broadway, Boulder, 303-499-8866.
FRIDAY, APRIL 24
Annual Seniors’ Fish Off. 6:30 a.m. Wally Toevs Pond at Walden Ponds Wildlife Habitat, 75th Street between Valmont and Jay roads, Boulder, 303-678-6219.
Mountain Plover Festival. Karval, 719-446-5456. Through April 26.
SATURDAY, APRIL 25
Lions and Abert’s and Bears. 10 a.m. Bald Mountain Scenic Area, on Sunshine Canyon Drive, Boulder County, 303-678-6214.
Fit, Position, Technique Clinic. 9 a.m. Community Cycles, 2805 Wilderness Place, Suite 1000, Boulder, 720-565-6019. Registration required.
SUNDAY, APRIL 26
Spring Heritage Day at Walker Ranch Homestead. 10 a.m. Walker Ranch Homestead, 8999 Flagstaff Road, Boulder, 303-779-8848.
MONDAY, APRIL 27
Fix-A-Flat Workshop. 6 p.m. Community Cycles, 2805 Wilderness Place, Suite 1000, Boulder, 720-565- 6019. Registration required.
The Flood at Four Mile Canyon Creek — With a geologist and volunteer naturalist. 6 p.m. North Boulder. Reservation at https://bouldercolorado.gov/osmp/ fourmileflood.
TUESDAY, APRIL 28
The Complexities of Sicily. 7 p.m. Changes in Latitude Travel Store, 2525 Arapahoe Ave., Boulder, 303-786-8406.
Rocky Mountain Backpacking. 6:30 p.m. REI Store, 1789 28th St., Boulder, 303-583-9970.
To list your event, send information to: editorial@boulderweekly.com. attn: “Adventure.”
