Ironman Marc

Ironman Marc

March 22, 2018

My name is Marc Duelsen and I am a German professional triathlete, specialising on middle and long distance races or to put it simple: IRONMAN!

My professional career as triathlete is still relatively young. However, I was always passionate about sports. Growing up, I competed at white-water kayaking but sadly had to quit it because nearly everyone grew bigger and taller than me. My body just could not keep up with my ambition, and at the age of 18 I finally made it to the world of endurance sports. I joined the local track and field team and specialised in middle distance runs, especially steeplechase.

In 2010, a friend of mine asked me if I could imagine competing in a local triathlon. I agreed, knowing that the swimming would be a catastrophic endeavour as I couldn’t crawl at all. I swam my first competition therefore fully breaststroke. Luckily, the bike and running parts were lot much fun and my split-times were excellent. I’ve been hooked on triathlon ever since… and I learned how to swim.

In contrast to many other professionals in the IRONMAN circus, I did not “graduate” from shorter distances, I rather recognized straightaway that the longer distances were just made for me. Just one year after nearly drowning in a local swimming pool during my first triathlon, I qualified for the IRONMAN World Championships Hawaii as an amateur during IRONMAN Frankfurt 2011.

After crossing the finish line on Ali’i Drive, Kona in third place of my age-group, the next step was clear to me: Become a professional athlete and work tirelessly to come back to Kona for the World Championships as one of the best 50 male triathletes in the world.

 As you can imagine, the journey was long and tough: hard training sessions, waiving, looking for sponsorships, and so forth. My first win at Ironman Wales 2016 was definitely a key moment that I will cherish forever as it was the step stone for the qualification for Kona 2017.  

My dream finally came true and then started off as a nightmare. I got kicked very hard in the ribs, thought about quitting, breaststroked (like in the very early days…) and left the water dead last. However, I did not give up; the journey was just too long to call it quits here. So after a nearly perfect bike leg and one of my best marathons in a competition, I finished in 18th place, knowing that much more would have been possible on that day. This result makes me hungry for more!

My first contact to BRAV? I visited the IRONMAN village in Tenby, Wales in 2016 right before the race and I saw the socks with the “angry bear”. After my victory, I decided to buy one pair as a remembrance for this special day.

It was the start of a great relationship: I received 3 other pairs as a Christmas gift and via social media, the cooperation started to kick-off. The longer I wear them; the more I’m convinced that these socks are perfect. The “angry bear” stands for the necessary aggression that is required for long trainings and races. The “BRAV Rockets” stand for power in the legs and the “BRAV Ghosts” is just a perfect reflection that one should not take everything too serious and don’t forget the fun side of the sport. All my feelings during trainings and races are therefore “on my socks” as well. Lots of competitors and fans have asked me which socks I am wearing and I can always proudly respond and recommend “BRAV”. 




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