Humphrey Hansons marathon method

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Hansons Marathon Method is the best-selling performance marathon training program.

Competitive running is one of the most popular sports in America, with all-time record highs of 19 million runners finishing a running event in 2013.

Since 1990, the number of U.

race finishers has grown 300%.

American marathoning hit all-time highs in 2014.

The number of marathons in the U.

has increased 300% since 2000.

The number of marathoners has increased 56% over the same time.