Please answer the following question: Information: - The Tour of California (officially known as the Amgen Tour of California for sponsorship purposes) is an annual professional cycling stage race on the UCI America Tour and USA Cycling Professional Tour. It was first held in 2006. The eight-day race covers 650700miles (1,0451,126km) through the U.S. state of California. A typical edition might begin in Nevada City, travel through the redwoods, wine country and the Pacific Coast, and finish in a southern California city such as Escondido. The 2009 race crossed the Central Valley from Merced to Fresno, with an excursion through the Sierra Nevada foothills, before crossing over to the coast. The tour is sponsored by Amgen, a large California-based biotech company. - Cycling, also called bicycling or biking, is the use of bicycles for transport, recreation, exercise or sport. Persons engaged in cycling are referred to as "cyclists", "bikers", or less commonly, as "bicyclists". Apart from two-wheeled bicycles, "cycling" also includes the riding of unicycles, tricycles, quadracycles, recumbent and similar human-powered vehicles (HPVs). - The 2010 Tour of California was the fifth running of the Tour of California cycling stage race . It was held from May 16 -- 23 , and was the first edition of the race held in the month of May , after the first four occurred in February . It was rated as a 2.HC event on the UCI America Tour . It began in Nevada City and concluded in the Agoura Hills . The event 's move to later in the year has made it so the route was different from previous editions of the race , and also provided for a different makeup of ridership , as it conflicted with the 2010 Giro d'Italia . The race was won by Team HTC -- Columbia rider Michael Rogers , who held off Garmin -- Transitions ' David Zabriskie and Levi Leipheimer of Team RadioShack . In other classifications , Liquigas -- Doimo 's Peter Sagan won both the points and young rider classifications , Thomas Rabou of Team Type 1 won the mountains classification and Garmin - Transitions won the teams classification . - The USA Cycling Professional Tour is a professional road bicycle racing series organized by USA Cycling. After reading the paragraphs above, we are interested in knowing the entity with which '2010 tour of california' exhibits the relationship of 'sport'. Find the answer from the choices below. Choices: - cycling - road bicycle racing
Answer:
road bicycle racing