Cycling at the 2012 Summer Paralympics consisted of 50 events in two main disciplines, track cycling and road cycling. Track cycling was held in London Velopark from 30 August to 2 September, and road cycling took place at Brands Hatch from September 5 to September 8. Classification Cyclists are given a classification depending on the type and extent of their disability. The classification system allows cyclists to compete against others with a similar level of function. The class number indicates the severity of impairment with "1" being most impaired. Cycling classes are: B: Blind and visually impaired cyclists use a Tandem bicycle with a sighted pilot on the front - both athletes are awarded medals H 1–4: Cyclists with an impairment that affects their legs use a handcycle T 1–2: Cyclists with an impairment that affects their balance use a tricycle C 1-5: Cyclists with an impairment that affects their legs, arms and/or trunk but are capable of using a standard bicycle Events For each of the events below, medals are contested for one or more of the above classifications. Road cycling Men's individual road race • B • H1 • H2 • H3 • H4 • C1-3 • C4-5 Men's individual time trial • B • H1 • H2 • H3 • H4 • C1 • C2 • C3 • C4 • C5 Women's individual road race • B • H1-3 • H4 • C1-3 • C4-5 Women's individual time trial • B • H1-2 • H3 • H4 • C1-3 • C4 • C5 Mixed individual road race • T1-2 Mixed individual time trial • T1-2 Mixed team relay • H1-4 Track cycling Men's 1 km time trial • B • C1-3 • C4-5 Men's individual pursuit • B • C1 • C2 • C3 • C4 • C5 Men's individual sprint • B Women's 500m time trial • C1-3 • C4-5 Women's 1 km time trial • B Women's individual pursuit • B • C1-3 • C4 • C5 Mixed team sprint • C1-5 Participating nations 223 cyclists from 48 nations including 37 guides from 20 selected nations competed. + 1 pilot + 3 pilots + 1 pilot + 3 pilots + 1 pilot + 3 pilots + 1 pilot + 4 pilots + 2 pilots + 3 pilots + 1 pilot + 1 pilot + 1 pilot + 3 pilots + 1 pilot + 1 pilot