Tracey Cramond, who was running for the Butterwick Hospice in memory of her mother, was named as the millionth runner to take part in the event.
She said that as she crossed the finish line, "I heard a bang go off behind me...and then I got mobbed!"
Tracey was presented with a special award by Lord Coe.
Lord Coe, the man in charge of the London Olympics, will be in North Yorkshire today (Wednesday) to see the Olympic Torch. He will officially open the new Richmond School before the relay passes through the grounds around lunchtime.