2024 Olympic Triathlon Champion Alex Yee has reached the highest honours any Olympic Distance triathlete could achieve. After taking the Gold at the Olympics in Paris, he rounded out his season by securing his first ever World Championship title. In 2025, Alex will take on a different type of challenge, heading to his hometown of London, to take on his first marathon! With a personal best of 27:51 in the 10,000m, he is no stranger to elite distance running. Alex will be right at home, figuratively and literally, when he takes on London in April.


Is Alex Yee Switching to the Marathon?

Alex Yee is known for being one of the fastest runners in Triathlon, and being born in London, it makes the London Marathon the obvious choice for your first one, but that doesn't mean Alex Yee is switching to the marathon full-time. "There will be a conscious shift to run more volume, " says the Olympic Champion. Albeit with more running, it makes sense to continue the same data-driven approach that delivered Alex Olympic Gold in Paris.


How will Alex Yee train for the London Marathon?

When it comes to triathlon, Alex Yee has cemented himself as one the greatest in history. His multi discipline training is tracked and backed by COROS, using the COROS DURA to monitor his power during competitions and the COROS PACE Pro to track every step and stroke outside along the way.


COROS Coaches Tip: Alex has shared one of his favorite running workouts with COROS for athletes everywhere to try. Click here to download the structured workout to your library and train like an Olympic Champion!


The watch of choice for the fastest triathlete

Alex Yee is ready to take on the London Marathon prepped with his COROS PACE Pro!


Alex Yee will be using the new PACE Pro in the build-up to the London Marathon. He has been a user and lover of the COROS PACE 3 since it first came out. Known for its sleek design and lightweight body, the PACE 3 has become a favourite for all types of runners.

For me, it was about how light the PACE 3 is. That was one of the first things that I was surprised by.


But, with the introduction of the PACE Pro, a watch that offers a premium experience, with seamless interface and usability it has quickly taken over the wrists of many our elite athletes.

The PACE Pro is everything I need and more in a watch!


The COROS Training Hub

Alex has admitted he won't be switching full-time to the marathon, so data anlaysis during a marathon build up will be essential. The data recorded from Alex's COROS PACE Pro will effortlessly feed into the COROS Training Hub where Alex can work with his coach to analyse every step of marathon training.

Being able to analyse training is particularly important. For me and my coach To see what I’ve done and what the watch has tracked, I think has been really beneficial.


The technical nature of the triathlon means Alex Yee and his coaching team are very data-driven when it comes to performance metrics. Like many elite athletes, Alex Yee focuses on a handful of metrics when performing at the highest level, so having accurate data is essential. The COROS Heart Rate Monitor provides all the data Alex Yee needs during his run workouts.

For running I tend to focus on my Average Pace and Heart Rate, so I imagine these will be similar for the marathon if not more of a focus on my Heart Rate to make sure I’m staying in the right zone for those longer marathon sessions.


COROS makes training data easily accessible for all athletes. Along with the easy-to-read graphs, COROS provides a free coaching service to help analyze training data.


Alex Yee's journey from Olympic Triathlon Champion to marathon debutant is one filled with excitement and anticipation. As he prepares to take on the London Marathon, his training will be meticulously tracked and analyzed using COROS technology, ensuring he remains at the pinnacle of his performance. With the COROS PACE Pro on his wrist and the support of the COROS Training Hub, Alex is set to tackle this new challenge head-on. Whether you're a triathlete or a marathoner, following Alex's journey and training tips can inspire and guide your own athletic pursuits. Stay tuned to see how this elite athlete conquers the streets of London!


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