BRIDGE CLIMBING—scaling the trusses and cables above suspended roadways—has been popular in Australia for years. But if you tried it stateside, you'd likely land in jail—until now. Cincinnati-based Purple People Bridge Climb has received permission to lead patrons on half-mile scrambles from Newport, Kentucky, across five spans of the Ohio River's Purple People Pedestrian Bridge, and back to Cincinnati. From $60; www.purplepeoplebridgeclimb.com

Rome is burning my quads! Visitors to the Italian capital now have an alternative to tourist buses. SIGHTJOGGING matches runners with a multilingual trainer on any of nine five-mile jogging/sightseeing routes through the city. You'll still hear, "And on your left is St. Peter's Basilica . . ." It just won't be crackling through a loudspeaker. About $85 per hour; www.sightjogging.it

Round up your big-wheel buddies for western Colorado's second annual 18 HOURS OF FRUITA. From midnight on Friday, May 5, until 6 p.m. Saturday, teams and soloists will crank out five-and-a-half-mile laps through the desert. And if athletic glory isn't enough, New Belgium Brewing will be dispensing free Fat Tire Ale at the postrace party. From $225; www.emgcolorado.com