Updated, 9:50 a.m.

Good morning on this magnificent Monday.

An “infrastructure- and transit-obsessed” New Yorker just broke the Guinness World Record for the fastest trip to each and every New York City subway station.

All 469 of them.

“Congratulations, you are Officially Amazing!” the Guinness group told Matthew Ahn in an email last week.

Mr. Ahn, 25, completed the trek in 21 hours, 28 minutes and 14 seconds.

“What it is, more than anything, is an endurance test,” he told us.

“There’s no opportunity to take a nap.”

(That’s a pretty long day. To stay swift on his feet, he took five granola bars along for fuel.)