Stage races are multi-day cycling or running events where participants compete over several segments, known as stages. Each stage typically covers a different distance and terrain, and the overall winner is determined by the cumulative time taken across all stages. These races can vary in length, from a few days to several weeks, and often include a mix of flat, hilly, and mountainous routes. Popular examples of stage races include the Tour de France for cycling and the Tour of California. Athletes must not only excel in speed but also in endurance and strategy, as they navigate diverse challenges throughout the event.