[1] She received a bronze medal at the first ever knock-out sprint event at the 2022 World Orienteering Championships, behind Tove Alexandersson and Megan Carter Davies.

[2] On club level, van Dongen competes for both Västerviks OK (in Sweden) and OLifant (in the Netherlands).

[3] In an interview in the lead up to the 2022 World Games, van Dongen indicated that she only started orienteering in 2018 after meeting her partner, Simon Jakobsson.

[3] As a child, Eef van Dongen participated in volleyball and judo, and more recently has been involved in endurance running and skating.

She works as a researcher in glaciology at the University of Stockholm, and as a modeler at the Swedish Meteorological and Hydrological Institute.