Ben Beach runs along the Capital Crescent Trail near his Bethesda home. (Doug Kapustin/FOR THE WASHINGTON POST)

Bethesda resident Ben Beach has completed 43 consecutive Boston Marathons, the second-longest streak in history behind only Neil Weygand, who has a current streak of 44 in a row.

Today, Beach is walking up to the starting line for the 44th time, looking to match Weygand’s record.

What makes Beach all the more exceptional is the fact that the 61-year-old can barely run. He suffers from a neurological movement disorder known as dystonia that causes his left leg to swing awkwardly and limits his runs to about 10 miles each week.

And yet, as The Post’s Amy Shipley explains, Beach “cannot stomach the idea of the race going on without him.”

Read Shipley’s full profile of Beach, and watch the video below.