Occoquan Crafts Festival

Historic Occoquan hosts its annual fall arts and crafts show, featuring more than 350 juried artists and crafters. 10 a.m.-6 pm. Saturday and Sunday. Throughout the town. Free; $3 shuttle bus service from parking areas is available. 703-491-2168.

Chili Cook-Off

Watch participants cook and taste the entries as the Bull Run Cloggers and J.P. McDermott and his Western Bop Band perform. 10 a.m. Saturday. Loy E. Harris Pavilion, West and Center streets, Old Town Manassas. Free. 703-361-9800 or www.harrispavilion.com.

Latino Festival

The third annual Harris Pavilion Latino Festival features dancing, bands, folk entertainment and food to celebrate Hispanic heritage. 11 a.m.-6 p.m. Saturday. Loy E. Harris Pavilion, West and Center streets, Old Town Manassas. Free. 703-361-9800 or www.harrispavilion.com.

Thoroughfare Gap

Commemorate the anniversary of this 1862 Civil War engagement. Historians will present information about the battle, and local historical societies will have exhibitions. Noon-5 p.m. Saturday. Bull Run Mountain's Natural Area Preserve, 17405 Beverley Mill Dr., Broad Run. $5. 703-753-2631.

Fall Bike Ride

The annual countryside bike tour begins in Nokesville and winds through Prince William County. Participants get a fruit and bagel brunch, plus a T-shirt after the ride. 9 a.m. Saturday. Nokesville Community Park, 12560 Aden Rd., Nokesville. $17 in advance, $22 on the day of the event. 703-221-8579.