Claim: Athletics at the Summer Olympics includes contests for athletics.

Road running is the sport of running on a measured course over an established road -LRB- as opposed to track and field and cross country running -RRB- .   These events are usually classified as long-distance according to athletics terminology , with races typically ranging from 5 kilometers to 42.2 kilometers in the marathon . They may involve large numbers of runners or wheelchair entrants . The three most common IAAF recognized distances for `` road running '' events are 10K runs , half marathons and marathons . Despite this , there are far more 5K road race events , due to their popularity for charity races and similar , less competitive reasons to hold an event .   Road running may offer those involved a range of challenges and interests such as dealing with hills , sharp bends , varied surfaces , inclement weather , and involvement in a large group . Aerobic fitness , or the ability of the body to use oxygen , is the biggest factor contributing to success .   The impact of running on roads puts more stress on the feet , knees and lower back than running on dirt or grass . It can compensate by providing a consistent , level surface . It may put less strain on the Achilles tendon . Before engaging in road running , one should choose a shoe that best suits one 's foot type and running style .   Road running is one of several forms of road racing , which also include road bicycle racing and motor vehicle road racing .