President Bush's European trip started with a nasty fall.

Bush, an avid and aggressive mountain biker, collided with a local police officer Wednesday during an afternoon ride at a golf resort here, scraping his hands and arms when he hit the asphalt.

Bush, who was wearing a helmet and traveling at what a spokesman called a "pretty good speed," quickly dusted himself off. But the officer, on foot at the time, was taken to a local hospital with an ankle injury. He was released when tests revealed no fracture.

White House press secretary Scott McClellan said Bush's scrapes were "mild to moderate" and did not interfere with the president's diplomatic schedule for the day. Bush appeared later in a tuxedo for dinner with Queen Elizabeth and her husband, the Duke of Edinburgh.

The bike, McClellan said, fared worse. It was unclear who was to blame for the crash.

Bush talked with the officer, a member of the local police department, and asked White House physician Richard Tubb to monitor his condition. Bush later called to check on him, McClellan said. "The president wished the officer well and said he was glad to hear he was doing okay," McClellan said. "The officer was reached on his cell phone while he was on his way home. The call lasted just a few minutes. They had a very pleasant conversation."

Bush, who turned 59 on Wednesday, prides himself on his physical fitness. He is no stranger to the dangers of biking. About a year ago, he wiped out while riding his bike at his Crawford, Tex., ranch, suffering cuts and bruises. Bush took up hard-core bicycling a few years ago after a knee injury forced him to quit running. His pace was known to leave even some well-conditioned Secret Service agents huffing.