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.
All I can give you is statistics. The peak time for finishing a half marathon is 1:42 for men, 1:58 for women (that is when most will cross the line). The average time to complete a half marathon is 1:50 for men and 2:05 for women and overall 1:54 for everyone. Winning times tend to be about 1:08 for men and 1:19 for women - there are faster and slower winning times of course. If you run faster than these averages, then that is a decent time.