Take a self-guided tour of participating Loudoun farms and wineries. See huge Shire horses and shaggy Scottish Highland cows; visit greenhouses; taste wines; or buy spring seedlings and plants for your home. Brochures, maps and directions are available at Loudoun county libraries, community centers, the Loudoun Convention and Visitor's Association and area businesses. 10 a.m.-4 p.m. Saturday and Sunday. Free. 703-777-0426 or www.rural-loudoun.state.va.us.


The Virginia chapter of the Arthritis Foundation holds a non-competitive 5K (3.1-mile) walk to raise money. There is also a one-mile option for those who want to walk a shorter distance. The Washington Redskins Alumni group is among the participants, including former players now dealing with degenerative osteoarthritis after years of sustaining routine poundings and injuries. Saturday, Oatlands Plantation, Route 15, six miles south of Leesburg. Registration, 9 a.m.; walk, 10 a.m. 571-217-2683.


This art show and sale, marking its 57th year, is the longest running regional exhibit of its kind, featuring artists from a 75-mile radius. Opening gala, food and beverages, 6-8:30 p.m. Friday; show and sale, 10 a.m.-5 p.m. Friday, Saturday and Sunday; Grace Episcopal Church, 6507 Main St., The Plains. Food available for purchase at the Art Cafe Alfresco; all cafe proceeds benefit Habitat for Humanity. $10, Friday gala; $5, Saturday and Sunday. 540-253-5177 or www.gracechurch.net.

Hounds, an original oil by Lynn Donovan, whose painting classes have inspired the works by several new exhibitors in the Neighborhood Art Show.