As Rhonda Miller drew up behind the wolves, she wondered at first if they were pedestrians, then bears. Then she realized what she was looking at.
"I was so struck by the size of their heads and their jaws," she told the CBC.
She followed them for a couple of minutes then took video as she overtook them. The video shows the animals, as Miller says, running "flat out."
She didn't look at her speedometer but estimated they were running 40 or 50 kilometers per hour - or about 30 mph. From the video, that certainly looks plausible. Wolves typically lope around 5 mph but can reach speeds of 40 mph and cover 50 miles in a day.
She took the video because she was afraid no one would believe her.
"When I got to school, I shared it with the teachers and kids," Miller said. "Everybody was just amazed. I think just the power of them and the beauty of them, seeing them running like that, flat out, is pretty inspiring."