In Norse mythology, Svaðilfari (Old Norse "unlucky traveler") is a stallion that fathered the eight-legged horse Sleipnir with Loki (in the form of a mare). Svaðilfari was owned by the disguised and unnamed hrimthurs who built the walls of Asgard.

In Norse mythology, Svaðilfari (Old Norse "unlucky traveler") is a stallion that fathered the eight-legged horse Sleipnir with Loki (in the form of a mare). Svaðilfari was owned by the disguised and unnamed hrimthurs who built the walls of Asgard.