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The total elevation gain of the Boston Marathon is over 800 feet, according to The Running Channel. However, runners will also lose over 1,200 feet of elevation, meaning it is a net downhill course.

Elevation training makes your body put in more effort during workouts. ... This improvement only affects the performance by 1 to 2 percent, but seconds mean everything when competing. ...

The total elevation gain of the Boston Marathon is over 800 feet, according to The Running Channel. However, runners will also lose over 1,200 feet of elevation, meaning it is a net downhill course.