Sir Ranulph's Jaguar was in collision with two other cars
Adventurer Sir Ranulph Fiennes was taken to hospital "dazed and bloodied" after his car was involved in a collision in Greater Manchester.
Sir Ranulph, the oldest Briton to reach the summit of Mount Everest, apparently swerved into the opposite carriageway in the crash in Stockport on Saturday.
His Jaguar hit a Nissan Micra travelling the opposite way on the A6 and then struck a Ford Focus.
Sir Ranulph, 66 on Sunday, was not seriously hurt but received treatment.
The male driver of the Nissan suffered leg injuries which were not thought to be life-threatening. A five-year-old child in the vehicle was also injured but their condition was not believed to be serious.
Firefighters used hydraulic cutting equipment to free two occupants from one of the vehicles, believed to be the Nissan, which had overturned on its side.
Sir Ranulph had been in the area in order to compete in the 42-mile High Peak Marathon in Derbyshire, as part of a veterans' team called Poles Apart.
Sir Ranulph was not seriously hurt in the accident
His car mounted a pavement and came to a halt near the front window of an Italian restaurant during the accident shortly before 1400 GMT on the A6 near Dundonald Street.
A woman who drove past just after the accident said Sir Ranulph was sitting "dazed" and bloodied in the passenger seat of his Jaguar.
She said: "I saw the man in his 60s in the passenger seat of his car. He looked in shock. He was holding what looked like a towel to the left-hand side of his face which was covered in blood."
Police appealed for witnesses.
Sir Ranulph was the first man to visit both the North and South Poles by foot and the first to completely cross Antarctica by foot.
Last May, at the age of 65, he climbed to the top of Everest, the world's highest peak, to raise money for Marie Curie Cancer Care.
Sir Ranulph had a double heart bypass in 2003 and suffered a heart attack two years later as he came agonisingly close to the summit of Everest.
He ran seven marathons on seven continents in seven days in 2003 and climbed the treacherous north face of the Eiger in 2007.