Gullfaxi

Gullfaxi is a horse in Norse mythology. Its name means "golden mane".
It was originally owned by Hrungnir, and was later given to Magni by Thor as a reward for lifting off the leg of Hrungnir, which lay over the unconscious Thor and strangled him:
Gullfaxi is equally fast on land, in the air and on the water, but not quite as fast as Sleipnir, Odin's horse.

Folk tale

Gullfaxi is also the name of a horse in the modern Icelandic folk-tale The [Horse Gullfaxi and the Sword Gunnfoder] collected by Jón Árnason, translated into German by, then rendered into English and included in the Crimson Fairy Book compiled by Andrew Lang.