09/10/2013 02:23 EDT | Updated 11/10/2013 05:12 EST

Brandon Harrison Suffers Stroke On Cancer Fundraising Trip Across Canada

Long For Life

CALGARY – A young man who has been longboarding across Canada to raise awareness for cancer and heart and stroke disease himself suffered a stroke on the weekend.

Brandon Harrison, 19, began his trip with his father in St. John's, N.L., on May 14.

They had covered more than 5,400 kilometres when Harrison, a cancer survivor, suffered a stroke in Red Deer, Alta.

His mother says he is listed in critical condition at Calgary's Foothills Hospital.

His father, Michael Flloyd, says doctors say they have to wait for his blood pressure to drop before they can assess the damage.

Harrison, who turns 20 on Tuesday, survived cancer at the age of two and battled back from a brain aneurysm and stroke at age 15.

Floyd says he hopes they will be able to finish their fundraising mission.

"We believe he will make a full recovery,'' Floyd says. "It's what he has done in the past, he has done it again and again and this time will be no different.

"He will finish it, we will have people come and rally and support and ride it for him, and we will finish it this year.''

Also on HuffPost

Photo gallery Heartwarming News Stories Of 2013 See Gallery