The 73-year-old 'Star Trek' icon, who used to be an athlete at school, put on his running shoes to do a little light training for the big event, but he was given a shock on the big day when he realised he would be jogging up a hill, days after his 72nd birthday, reported Contactmusic.
His fears for his health grew after learning how heavy the beacon actually was, but he forced himself to fake a smile as he embarked on the quarter-mile run in Croydon, south London, where he was cheered on by crowds of locals.
"We got to the morning... (and) they (organisers) dropped me off at the bottom of the hill... It was horrible because I hadn't trained for a hill! I was so upset and angry and thought I might die, but I was determined (that) if I died, I would throw that damn torch at somebody before I went down! (It was) very heavy," he said.