Sen. John F. Kerry, the Democratic presidential hopeful, spent yesterday's break from campaigning strolling through a Lewis and Clark exhibit, then speeding his Serotta bicycle 10 miles.

	Bill Wade, Post-Gazette Sen. John F. Kerry during his 10-mile bicycle ride in North Park yesterday. Click photo for larger image.

Kerry, and his wife Teresa Heinz Kerry, toured the Lewis and Clark expedition exhibit at the Sen. John Heinz Pittsburgh Regional History Center yesterday afternoon.

Then Heinz Kerry went to her Fox Chapel home to prepare dinner while the senator, an avid rider, made his first ever loops on the bicycle path in North Park.

In professional gear, from bike-clip shoes to handle bar gloves, the senator and two secret service agents went two laps on the five-mile course.

Not winded at all, Kerry then loaded his orange and yellow, 10-speed bike, which he often takes along on the campaign trail, into the back of a black Chevrolet Suburban, hopped in the back seat, and left before park visitors knew who he was or that a presidential candidate was there.

He was hard to pick out of the crowd of bikers on the path because his signature grey hair was covered with a yellow and orange bicycle helmet. Only a small tuft of grey stuck out the back. The two secret service agents who trailed behind him wore nondescript clothes and rode black bikes.

Two other agents, and campaign aide Marvin Nicholson, awaited his return in the parking lot at the corner of Pearce Mill Road and Lake Shore Drive.

Nicholson said Kerry rides on the roads around Fox Chapel and often rides 30 miles when on the campaign trail.