Leaving home in Detroit at 8 a.m., James Robertson doesn’t look like an endurance athlete.

Pudgy of form, shod in heavy work boots, Robertson trudges almost haltingly as he starts another workday.

But as he steps out into the cold, Robertson, 56, is steeled for an Olympic-sized commute. Getting to and from his factory job 23 miles away in Rochester Hills, he’ll take a bus partway there and partway home. And he’ll also walk an astounding 21 miles.

Five days a week. Monday through Friday.
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