Every Mon. Slow/moderate-paced 23-mile ride to Independence Lake on mostly dirt roads. See aabts.org for weather cancellations or delays. 9 a.m. sharp, meet at Old St. Patrick Catholic Church, 5671 Whitmore Lake Rd. Free. (412) 302–9960.  

Every Mon. All invited to join this independent local women’s chorus to sing an eclectic program, including classical, folk, Broadway, pop, and jazz. Joshua Marzan directs. 9:30–11:30 a.m., First Presbyterian Church, rear ground level, 1432 Washtenaw Ave. Free to visitors ($175 per semester for those who join; partial scholarships available). [email protected]. 

Oct. 12–13. The public is welcome to attend all or part of this 2-day conference that includes speeches and panel discussions with policymakers, scholars, diplomats, and practitioners to explore international law, power, security, climate, and Africa’s economic future. 10:15 a.m.–4:15 p.m., Weiser Hall, rm. 1010, 500 Church St. Free. Preregistration required at fordschool.umich.edu/events. [email protected]. 

Every Mon.–Thurs., except Oct. 19 & 20. U-M’s highly disciplined 200+ member marching band or sections thereof can be seen and heard practicing on the new Elbel Field, across the street from the old Elbel Field. All welcome to find a spot in the bleachers and get a sneak preview of upcoming halftime shows. Rehearsals usually last 1–2 hours. Also, at 6 p.m. on Friday, Oct. 16, the band hosts its monthly free Open Stadium Rehearsal at Michigan Stadium. 4:45 p.m., Hill at Fifth Ave. Free. (734) 764–0582.

Every Mon. All invited to join club member James Weir on a leisurely stroll through the well-maintained dirt paths of the Botanical Gardens to observe migrating warblers, thrushes, flycatchers, cuckoos, and other birds making their way south. Binoculars provided if needed. 5:30–7:30 p.m., 1800 N. Dixboro Rd. Free. washtenawbna.org.

Every Thurs., Sat., & Mon. (different AARC locations). Runners of all abilities invited to join a 5K mapped route (Thurs. & Mon.) or either a beginner or advanced group run (Sat.). AARC Colonnade (6 p.m. Thurs.), 2621 Plymouth Rd.; AARC Traver Village (7 a.m. Sat.), 901 W. Eisenhower; and Corner Brewery (6 p.m. Mon.), 720 Norris, Ypsi. Free. annarborrunningcompany.com.  

Every Mon. Moderate-paced 20-mile ride to Dexter and back, often with a rest stop along the way. Riders must wear a helmet and bring water and supplies to fix a flat tire. 6 p.m. (nonmembers must come 10 minutes early to sign a club waiver), Barton Nature Area, 1010 W. Huron River Dr. Free. annarborveloclub.org.   

Every Sun.–Thurs. (different times). All invited to work on their knitting, crochet, weaving, and embroidery projects. 6–8 p.m. (Mon.–Thurs.) & 1–3 p.m. (Sun.), 401 N. Fourth Ave. Free. (734) 780–7867. 

Every Mon. & Wed. Runners of all abilities invited to join a beginner or advanced 3- to 5-mile group run, followed by socializing at a downtown coffee shop. 6:30 p.m., meet at the Kerrytown Clock Tower. Preregistration requested at meetup.com/a2runners. Free. [email protected].