{"id":145864,"date":"2025-09-17T07:00:24","date_gmt":"2025-09-17T11:00:24","guid":{"rendered":"https:\/\/runningmagazine.ca\/?p=145864"},"modified":"2025-09-17T12:13:50","modified_gmt":"2025-09-17T16:13:50","slug":"fuelling-the-final-stretch-how-cronometer-is-powering-a-boston-qualifier-with-precision-nutrition","status":"publish","type":"post","link":"https:\/\/runningmagazine.ca\/sections\/training\/fuelling-the-final-stretch-how-cronometer-is-powering-a-boston-qualifier-with-precision-nutrition\/","title":{"rendered":"Fuelling the final stretch: how Cronometer is powering a Boston qualifier with precision nutrition"},"content":{"rendered":"

The halfway point for Toronto runner Tony Wu<\/strong>‘s lead up to October’s Toronto Waterfront Marathon<\/a> has come and gone\u2013and Wu couldn’t be more excited. With just under two months to go, the training is hitting its most crucial stretch, but luckily, nutrition tracking app Cronometer has been there to make it that much simpler.<\/p>\n

\"Tony
Photo: Max Nie (@leitotthemax)<\/figcaption><\/figure>\n

“As my training gets more intense, with longer sessions, I can monitor my nutrition and adjust accordingly,” he said. The app also allows him to easily see trends over the past week or month, which will be useful for attributing any changes in his training and energy levels with nutrition adjustments.<\/p>\n

Up to this point, Wu says the daily guide and report features in Cronometer<\/a> have been the most useful. “My reports summaries break down protein, carbs and fat\u2013it’s definitely what I check most now,” he said. Cronometer also connected Wu to a performance dietician to set up macronutrient targets for optimal training and performance. \u201cEvery log in Cronometer is powered by lab-verified nutrient data, so I know I\u2019m not just tracking calories,\u201d the runner added. \u201cI\u2019m tracking the details that fuel endurance and recovery.<\/p>\n

\"cronometer\"
Photo: Nick Iwanyshyn<\/figcaption><\/figure>\n

Wu admits he is starting to feel the accumulated training fatigue as he enters the final push toward race day. “The next months are going to be the hardest\u2013and the most crucial\u2013part of training,\u201d he said. But he isn\u2019t surprised\u2013he’s no marathon rookie. “It’s a bit harder mentally to see focus with changes in my personal life and in my training plan\u2013for example, training on my own instead of with a group. The motivation is not quite there at times, but luckily, it’s only for a little bit.”<\/p>\n

Energy levels<\/h2>\n

Like many endurance athletes, Wu initially found he wasn’t fuelling enough. “With Cronometer, I realized I was significantly underfuelling before, during and after my runs,” he said. “Once I started to take more carbs, my performance improved. I’ve been able to sustain harder efforts, and I don’t feel as depleted afterward. I also feel less fatigued the following day.”<\/p>\n

\"Tony
Photo: Nick Iwanyshyn<\/figcaption><\/figure>\n

But staying on top of nutrition<\/a> isn’t always easy, especially on busy days. “It varies from person to person, but for me, it’s challenging to eat enough at times,” he said. “Some days, higher stress from work\u2013or just being focused on other things\u2013has me not thinking about food. I’ve found ways to add carbs\u2013honey or dried fruit\u2013to meals I already eat.” For Wu, Cronometer is an easy reminder that to sustain such a high level of activity, fuelling is critical to his performance.<\/p>\n

Chasing Boston: this Toronto runner is training smarter with Cronometer<\/a><\/p><\/blockquote>\n