Vail's finish is the highest by an American in London since 2009.
The American said his run-up to London was the best training for a marathon he's had.
The leading American last weekend believes his race helped build character and mental toughness.
Can an American find their way on to the podium at this year's race?
The 27-year-old feels strong heading into Sunday's ING New York City Marathon.
It was a fast day in San Jose!
The 27-year-old was tuning up for the ING New York City Marathon.
New York Road Runners announces the first 12 professionals that will compete in the November race.