Swimming at the 1948 Summer Olympics – Men's 100 metre freestyle Swimming at the 1948 Summer Olympics – Men's 100 metre freestyle The men's 100 metre freestyle event at the 1948 Olympic Games took place between 30 and 31 July at the Empire Pool. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated (unlike backstroke, breaststroke, and butterfly events). Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic-size swimming pool is 50 metres long, this race consisted of two lengths of the pool. Key: Q = qualification by place in heat, q = qualification by overall
Long-distance swimming Long-distance swimming Long-distance swimming is distinguished from ordinary swimming in that the distances involved are longer than are typically swum in pool competitions. When a given swim calls more on endurance than on outright speed, it is the more likely to be considered a long-distance swim. Long-distance swims, however, may take place in pools, such as the 1st official 24 hours World Championship in 1976 won by Peppo Biscarini with a record of 83.7 km (24 hour swims in a 50 m-long pool) or the current 25 meter pool world record of 2008 Olympic gold medalist Maarten van der Weijden