1 Fly-tying clinics

Afton State Park, March 1, 10 a.m.-noon and 1-3 p.m.

Designed for those with little or no fly-fishing experience, this hands-on clinic introduces beginners to the art of fly tying. Note: The 1 p.m. class is geared toward women. The 10 a.m. is class is open to all. Materials provided. Reservations required; 651-231-6968. More information: www.mndnr.gov.

2 Frozen frolic race series

Murphy-Hanrehan Park Reserve, March 1, 11 a.m.-2 p.m.

Race along the park’s snow-covered mountain bike trails, groomed especially for fat bikes and studded bike tires. Prizes awarded to the fastest. Helmet required. Ages 14-plus. $15. Registration required; 763-559-6700. More information: www.threeriversparks.org.

3 Learning to snowshoe

Fort Snelling State Park, March 2, 1-2:30 p.m.

Learn about the history of snowshoes and then strap on a pair for a short hike. Bring your own snowshoes or borrow the park’s. Reservations required; 612-725-2724. More information: www.mndnr.gov.

4 Aldo Leopold weekend

Minnesota Valley National Wildlife Refuge, through March 2

Choose from dozens of events on literary and outdoor themes. Attend a reading of Aldo Leopold’s essays on conservation and ecology. Learn about Henry David Thoreau’s time in Minnesota. Or simply participate in wildlife observations at the refuge. For a full schedule of events: www.fws.gov/refuge/Minnesota_Valley.

5 Sun-powered planet

Hyland Lake Park Reserve, March 4, 6:30-8 p.m.

Covering everything from photosynthesis to solar technology, this adult enrichment lecture takes a broad look at our energy-rich sun. The event includes a tour of Richardson Nature Center’s solar energy system. $5. More information: www.threeriversparks.org.