[venaoy]

No his round trip is 23 miles.

I can't possibly fathom why your first thought to travel 23 miles would be to walk? Biking is OBVIOUSLY so much faster, easier, less straining, etc.

[maxerickson]

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

He walks about 3.5 miles, takes a bus to the edge of its service area, and then walks another 7 miles to the job.

[venaoy]

I meant to write 21 miles (not 23 miles) round trip:

"Detroiter James Robertson, 56, walks about 21 miles a day"

So he would only have to bike 21 miles per day.