Several issues, which are not a matter of being challenging or interesting, make these achievements not fun to attempt at all. 1. The circles do not always register your presence. If you fly through them too fast, you'll sometimes randomly end up not being registered in a circle right in the middle which leads to forfeit. 2. No immediate restart option. When the above happens, you STILL have to suffer through the race KNOWING that you have forfeited but you still have to. This is unfun and impractical. A restart option floating somewhere to the side would be great help in trying to shave off those seconds. 3. Enemies still target you. I can't count the times I've lost time because of enemies deciding that I shouldn't complete this achievement. Would be nice if races existed in a separate phase of their own or if during races you were marked "out of combat", unable to attack or be attacked and/or drew no aggro. 4. Invisible hitboxes on objects that you have to brush past or fly through are something to mention though I understand that probably none of the above will be fixed in such an old game and this is the least likely of them all.