The system development life cycle is the overall process of developing, implementing, and retiring information systems through a multistep process from initiation, analysis, design, implementation, and maintenance to disposal.
exists and is an alternate of . The fastest marathon ever was run by Geoffrey Mutai (2:03:02) at the Boston Marathon on April 18, 2011. But because the legendary Boston course does not meet IAAF layout standards, the World Record belongs to Patrick Makau (2:03:38) recorded at the Berlin Marathon on September 25, 2011.
Among women runners, the median finishing time was 4:42:53. Not surprisingly, the average time it takes to run a marathon increases as you get older. For example, the average for males between 30 and 34 years of age is 4:00:11, while the average for those 50 to 54 years old is 4:23:0.