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TheBrock Yates' One Lap of America is an annualmotorsports event in theUnited States that has been held since 1984. It is the successor to theCannonball Baker Sea-to-Shining-Sea Memorial Trophy Dash, an undergroundauto race of the 1970s.

The original premise for both was to drive cross-country, but One Lap of America now respectsspeed limits, and has become a set of time trials at racetracks around the country, with overnight road trips between tracks. A minimum of two drivers are required. Cars must be street-legal and run one set of street tires the entire event.

Both events are the creation of automotive journalistBrock Yates. One Lap of America is currently sponsored byTire Rack and organized by Brock Yates, Jr.

Competition occurs as time trials held at various race tracks around the country. The competitors drive from track to track overnight, without the benefit of support crews. The field is divided into several classes based primarily on original manufacturerssuggested retail prices and number of doors. Competitors may make any modifications to their vehicles as they see fit but must run on a single set of tires, typically provided by the race sponsor, throughout the entire event, and vehicles must remainstreet legal with the modifications. Race track events are time trials with up to eight cars on track at a time. Competition is for fastest time rather than wheel-to-wheel racing.^[1]

The first One Lap in 1984 circumnavigated the lower forty-eight United States with the scoring based on comparing the entrants' declared mileage with that of the organizer's ("guess Brock's mileage"). From 1985 through 1991 competition was a series of road rallies: time-speed-distance events conducted on public roads. The length of One Lap of America has been as long as 10,000 miles (16,000 km) over ten days (1989) to just under 3,000 miles (4,800 km) over six days.

The One Lap of America has attracted such famous drivers asParnelli Jones,Price Cobb, Brian Makse,John Buffum,Elliott Forbes-Robinson, andHurley Haywood. It is sanctioned by theNational Auto Sport Association and since 2013 benefits theAlzheimer's Association, as founder Brock Yates suffered from the disease for nearly 12 years until his death in 2016.

• http://www.onelapofamerica.com/

• Auto races in the United States

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