Ever since Trimmel has shown a strong performance at national as well as international kickboxing tournaments: in 2005 she became threefold World Champion in Kickboxing at the IAKSA World Championships in Moscow, Russia – disciplines included team, hard- and semi contact. In 2006 only the WAKO European Championships in Kickboxing took place in Lisbon, Portugal, where she made it to Vice-European Champion in Kickboxing in discipline full contact. In 2007, she managed to become twice Vice-World Champion in Kickboxing in full- and light contact respectively. Since 2004 Nicole Trimmel has managed to become Austrian Champion in Kickboxing for each year correspondingly.