Twilight Runfest registration Registration is open for an 8K run July 20, which includes a 1K fun run, a block party and music by the Lloyd Dobler Effect. The course winds through Rockville neighborhoods, Montgomery College and a section of Rockville Pike closed to traffic. Races begin at 8:40 p.m. on Washington Street; 7 p.m. live music, Visit the Web site for details and to register. Rockville Town Square, 200 E. Middle Lane. 240-314-8620. $10-$45. Registration is required.

Taking care of skin Danielle Drezek and Tara Elton discuss common changes to skin due to aging and when one should see a doctor. Sponsored by Suburban Hospital. Thursday, 1:15 p.m. Holiday Park Multiservice Senior Center, 3950 Ferrara Dr., Wheaton. 240-777-4999. Free.

“Better Bones” class Improve balance and flexibility and enhance well-being. Sponsored by Holy Cross Hospital. Thursday and Monday, 2 p.m. Call to request a physician consent form. Margaret Schweinhaut Senior Center, 1000 Forest Glen Rd., Silver Spring. 301-754-7895. Free.

Financial planning for Alzheimer’s lecture Rick Gow, a financial planner, will discuss financial, legal and medical options. Sponsored by the Alzheimer’s Association of the National Capital Area. Thursday, 2-4 p.m. Ingleside at King Farm, Multipurpose Room, 701 King Farm Blvd., Rockville. 240-499-9019. Free, registration required.

Gentle yoga for seniors A fitness instructor from the Mindfulness Center helps participants tone muscles, improve balance and increase circulation. Take a yoga mat and blanket. 10 a.m. Fridays, through Aug. 16. Bethesda-Chevy Chase Regional Services Center, second floor, 4805 Edgemoor Lane. 240-777-8200. $70, registration required.

Zumba Gold fitness class For age 55 and older; a dance class with fast and slow Latin rhythms. Friday at 1 p.m. Holy Cross Hospital Senior Source, 8580 Second Ave., Silver Spring. 301-754-8800. $44; registration required.

Tai chi for county residents; meditative exercise that aims to improve balance, coordination and flexibility. Monday at 9:30 a.m. Longwood Community Recreation Center, 19300 Georgia Ave., Brookeville. Free. 301-774-8881.

Prostate cancer support group For anyone affected. Monday at 7 p.m. Suburban Hospital, 8600 Old Georgetown Rd., Bethesda. 301-896-3939. Free.

“Demystifying Medicare,” A presentation by members of the Senior Health Insurance Program. Tuesday at 7 p.m. Potomac Library, 10101 Glenolden Dr. 240-777-0690. Free.

Zumba on the Plaza Stage A fitness instructor from Washington Sports Club leads an outdoor class. Tuesday, 7 p.m. Fountain Plaza Stage at Downtown Silver Spring, 916 Ellsworth Dr. 301-203-4184. Free.

— Compiled by Lisa M. Bolton

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