I am Siem, 21 years old and I am living my dream to be a professional horseback archer. I am World Champion Horseback Archery, overall and young rider categorie, 2025.

I am World Champion Horseback Archery Eventing, with Chilli, Young Rider and Overall category, 2025.

In September 2022 I became European Champion Horseback Archery Eventing all ages and as a Young Rider with Husky. I have obtained the HA8 grade, the second highest placed horseback archer in the world, after Mihai Cozmei, in the IHAA system. In 2024 I became European Champion again in the Young Rider category with Batukán. I am second on the IHAA World Ranking list.

At my first Kassai World Cup competition in Checkendon, England I rode a score of 217.34 points. That’s the 8th place on the world ranking list of this year! In 2023 I scored 264.31 points with my own horse James, in Maulde, France. The highest score with quiver load ever and 2nd on the world ranking list for 2023. At this moment I am 6th on the ranking list on all time at the World Federation of Equestrian Archery.

Since october 2021 James came into my life. He is a very smart, friendly and sensitive horse and we have already lived many adventures. James is an American Quarter Horse.

In october 2024 Rumba joined the club! Rumba is a 3 years old Lusitano mare. She is smart and sensitive and I am sure we will have many adventures together.

I give trainings and demonstrations at location with James. This is a photo by Marja Koole during a show.

I also give training and clinics all over the Netherlands and sometimes abroad.

If you want to train with me, you can send us a message https://siemhorsebackarchery.com/contact/ or check on my facebook page where we make “events” if I give a training that you can join: https://www.facebook.com/siemhorsebackarchery.  

I do train privately owned horses and give groundwork and in hand training. On this photo I am explaining the students that horses need time to think about what we are asking them and find a solution to our question.

I shoot with the Slavic technique, using a quiver built by Mihai Cozmei. In the past I used thumb and three finger (mediterranean technique) so I can teach this techniques too.  Here you see me riding Batukán during the EC in Hungary 2024.

I obtained my level 1 freestyle and horseriding instructor at the Freestyle Academy Emiel Voest a few years ago. I train with Jeff Sanders, Californian Vaquero riding, when possible.

Since 2025 I have a WOW saddle. After trying other models I came to the conclusion that my first idea that I already had in 2018, my own WOW saddle, was the answer to my horse’s and my own needs. I can adapt the saddle to different horses at competition and James is doing very well with it. On the photo you see me riding Ömür at the Nemethy Academy with this saddle.