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.
4.75 minutes per mile based on the current men's world record.
fastest vet for half marathon
Amanda diez
37.3056994 kph = 23.1806869 mph
Fastest Time: 2:03:02 Geoffrey Mutai (4/18/11 Boston Marathon)
The fastest half marathon, according to the official IAAF is 58:23. This was set by Zersenay Tadese in London, Portugal.
10 seconds
The fastest plane ever recorded can fly at 9000 mph. It was by X-43A.
Sam Wanjaru
kurt fearnly
267.85 mph
what was the fastest time in last years boston marathon
The fastest air animal would be Peregrine falcons, and they are the fastest animals on Earth. They fly at 90 mph and dive at 200 mph.