Track is an original Olympic sport -- Reaction time is fast -- Jesse Owens made world history -- Some events test many skills -- Sprinters are the fastest people on earth -- Marathons are the ultimate test -- Hurdles make races harder -- Some runners are as good as gold -- The world championships are exciting -- Technology gives athletes an edge -- The paralympics let all compete -- High jumpers grab big air -- Fact sheet -- Glossary -- For more information -- Index -- About the author.