Most standard marathons (26.2 miles) cut off at 6 hours, so you need to keep at least a 13.7 min/mile pace (or run faster than 4.367 mph).
If you are expecting to qualify for bigger events, you need to aim to finish in around 3 hours.
fastest vet for half marathon
Amanda diez
37.3056994 kph = 23.1806869 mph
The fastest half marathon, according to the official IAAF is 58:23. This was set by Zersenay Tadese in London, Portugal.
Fastest Time: 2:03:02 Geoffrey Mutai (4/18/11 Boston Marathon)
10 seconds
The fastest plane ever recorded can fly at 9000 mph. It was by X-43A.
Sam Wanjaru
kurt fearnly
what was the fastest time in last years boston marathon
267.85 mph
what was last years fastest time in the boston marathon