Sonja Koppenwallner Competes in 2019 Thames Marathon

Sonja Koppenwallner Competes in 2019 Thames Marathon

August 29, 2019
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Many of our clients know that one of our advisors, Sonja, is an avid swimmer/triathlete and likes to compete.

As part of her summer vacation to Europe this year, Sonja took a trip to London a few weeks ago and competed in the "Thames Marathon". The marathon swim is an 8.7 mile swim from Henley-on-Thames, otherwise famous for its Royal Henley Regatta, and the finish is at Marlow. This is one of Great Britain's most prestigious marathon swims.

Sonja competed in the wetsuit division, and the water was a balmy 68 degrees.  She managed to finish as the 10th fastest female in the wetsuit division and was the 30th fastest swimmer overall.  There are no age group divisions in this event. There were 1002 competitors. It took Sonja 3 hours, 11 minutes, 24 seconds to finish the swim. 

Sonja says of her experience: "It's a really beautiful scenery and having rowed in college, I had heard of the Royal Henley Regatta. Swimming in a place like this is any open water swimmer's dream! So I took a quick trip to England to do this phenomenal swim. It was very well organized, and people are super friendly. It was a great experience! My mom came along and got to walk the whole distance next to me. Lots of people walk along the river and cheer on their swimmers. They have four food and water stops along the way. There are only 10% of swimmers who are allowed not to wear a wetsuit. I believe it's a safety issue, so I swam with a wetsuit even though open water swimming usually means you don't wear one. Every swimmer was also required to swim with a safety buoy (the Brits call it ‘tow float’). It was really fun!"

Well done, Sonji!  

The link to the event can be found at