Greetings, in the Starting Area of the Deathknights there is a Quest that allows you to gain Superspeed, an estimated 400%.
The quest is named "Death comes from high". First create a new DK and do every Quest until you've got the named Quest. Usw the Eyepillar and wait until the Message comes that the eye flies away. Now count until 1 and cancel your connection to the eye (button 5). If you did right you got now Superspeed!