A good time would be 29 seconds.
18.34
According to the time database in USA Swimming, Michael Phelps swam the 50 freestyle in short course yards with a time of 20.12 on December 10, 2010.
---- Englishman Richard Cavill developed the modern features of the freestyle, including the overarm strokes and the flutter kick, back in 1902. Since Cavill lived in Australia at the time, the stroke was then dubbed "the Australian crawl." Prior to that time, the side-stroke was commonly used in swimming competitions. The freestyle stroke was later polished and perfected by Olympian Johnny Weismuller in the 1920s. ----
Matt Biondi of the U.S.A. with a time of 48.63.
35 to 40 secs or look at this and decide how good you want to be. http://www.ymcaswimminganddiving.org/2011SC/results/2012%20QT.pdf
Ian Thorpe of Australia in a time of 1:44.71, a new Olympic record.
George Bovell swam the 50 m freestyle, 100 m freestyle, & 100 m backstroke for Trinidad and Tobago his best finish was 7th in the 50 m freestyle with a time of 21.82
A good time depends on a lot of different things. Like how long the event is and how old you are. If you are thinking of only a 50 yard freestyle (down and back in 25 yard pool) a good time for a high school swimmer would be between 23 seconds-25 seconds. A great time is between 20 seconds- 22 seconds. If you are a college swimmer however a good time would be about 20-21 and a great time is around 18-20 (phelps does around a 16-17)
27 seconds is a great time for a 50 freestyle. your time also depends on wether your a competitive swimmer or not if you are not you should be! dats a pretty good time! check usaswimming.com for the a, aa, aaa, aaaa times if your a competitive swima!
the fastest time for freestyle is 21.67
Aleksandr Popov of the Unified Team in a time of 49.02 seconds.