Norges største ultraløp. Løypa har blanding av skogsbilveier, teknisk sti og lett teknisk sti. Totalt cirka 10% asfalt.
Ecotrail Oslo is Norway biggest ultra race. A full-blown trail in the heart of the Norwegian capital. The participants will have the chance to explore both urban trails and forest trails. These ultra runners will be taken through historical areas that are now used for recreation, such as picnics, swimming, fishing, walking, running and cross-country skiing, and they will see the heart of the city. On top of this, the route includes the forests that uniquely surround Oslo.