After Olympic disappointment in 2021, a motivated Marco Arop redeemed himself with a 2023 world championship title in the men's 800 metres and a silver medal in North American record time at the Paris Olympics last summer.

With talk the Canadian runner is happier at practice and having better quality workouts, thanks in part to a budding friendship with new teammate Isaiah Jewett, it could spell more trouble for opposing runners.

"The relationship they have been building has reinvigorated Marco,"…