With some help from Mother Nature and Japan's famously punctual train system, two Americans this week unofficially broke the Guinness world record for the longest distance traveled by train in a 24-hour period.

"It feels good," said 24-year-old Corey Pedersen, a Montana native now living in Seoul, after he stepped off the Limited Express Relay Tsubame that delivered him and his traveling partner, 23-year-old Mike Kim from California, to Sendai, Kagoshima Prefecture, at exactly 9:27 p.m. Tuesday.

By that time the two had traveled for 23 hours and 55 minutes, covering a total distance of 2,901.4 km and bettering the existing record, which was set in 1992, by 58.9 km.