Nature Cruising

If it seems too hot to hike or bike, you can still immerse yourself in nature by taking the self-guided Chesapeake Bay critical-area driving tour. Every Sunday throughout the year, Patuxent River Park in Upper Marlboro allows cars to follow a four-mile course that winds through forested parklands, wetlands and the Merkle Wildlife Sanctuary. The free, self-guided tour can be taken between 10 a.m. and 3 p.m. and lasts about two hours. The area is also open to hikers and bikers on Saturdays and Sundays through September. Tours start at Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. 301-627-6074.

Equestrian Extravaganza

The horse show underway at Prince George's Equestrian Center in Upper Marlboro might not be as fast-paced as Triple Crown events, but the Maryland State Quarter Horse Association promises a good time during its Black-Eyed Susan Circuit show. The breed show features English and Western events as well as a Kenny Chesney look-alike contest, a name-that-tune game and a dog show. Today through Sunday, from 8 a.m. to 5 p.m., spectators can watch all events free at the center, 14900 Pennsylvania Ave. 301-952-7999.

Football Contest for Kids

Boys and girls ages 6 to 15 can test their athletic skills at the NFL Pepsi Punt, Pass and Kick competition Saturday. Participants are matched with their peers in punting, passing and placekicking events, and winners in each age category will move on to a sectional competition in the fall. The cost is $2 a person; registration is required by tomorrow. The contest takes place from 1:30 to 4 p.m. at the Stephen Decatur Community Center, 8200 Pinewood Dr. in Clinton. 301-297-4648.