70-Year-Old Runner Chases Marathon World Record in Toronto

At 70 years old, Jennifer MacDonell is about to attempt something most people wouldn't dream of at any age. She's racing the Toronto Waterfront Marathon to break the world record for women aged 70 to 74, currently sitting at 3 hours and 27 minutes.

MacDonell has been preparing for this moment all year. She studied the course, ran it over two days during a recent Toronto trip, and completely redesigned her training when she realized the hills were tougher than expected.

"You don't want to crash and burn," she told Canadian Running Magazine after her course preview. So she ditched flat routes and started seeking out hills instead.

MacDonell started running in Grade 4, though she didn't realize she was racing when boys asked if they'd beaten her. After university, work took over and running faded away until age 26, when she encountered a track club applying for a government grant.

She started simple: a 15-minute run from her office, seven and a half minutes out and back. That modest beginning eventually led to age-group world championships in triathlon, though she found juggling three sports too demanding and returned to what she loved most.

The marathon intimidated her at first. When she ran her first Toronto Marathon years ago, she hit the halfway point thinking a record was possible, then reality hit at the five-kilometer mark. She didn't get the record that day, but she immediately wanted to try again.

Since then, MacDonell has collected Canadian age-group records at 15K and 10 miles, plus a Masters record and a Manitoba Marathon win. But she gets most excited about smaller breakthroughs, like shaving 50 seconds off her 5K time last year at Toronto Waterfront.

Why This Inspires

MacDonell doesn't train alone. Her husband Norman Marcotte bikes alongside her on long runs, carrying water and keeping her company. He even made her a booklet documenting all her races and times, the ones she admits she's bad at remembering because she's always moving on to the next challenge.

Her coach Steve Boyd, who she emailed repeatedly until he agreed to work with her seven years ago, keeps her accountable. Together with heat acclimatization sessions in saunas and careful attention to recovery, MacDonell has built a system that honors how her body has changed while still pushing its limits.

"As I get older, I've had to work a lot harder," she said. "I'm a much harder worker, but gain a lot less."

Race director Charlotte Brookes and her team took MacDonell's record attempt seriously from her first email, treating her questions with enthusiasm rather than dismissal. That support matters because for MacDonell, this isn't really about competing against other runners.

"If nobody else was there, and I did it by myself, I would still be thinking, how fast can the human body go?" she said.

On October 19, she'll find out.