Disregard the previous post. A few seconds after I posted it, I realized it auto-saves. But I lost all the things like hit a goomba and stuff!!!
:(
I just had to go play again and immediately got the time stuff and distance, but it didnt save the otehr medals.
...2nd edit to note... it's not giving me World Siege or Golden Shell, even though I have completed both of them. >:(

edit again... turns out those medals were glitched. but Im not going to do them again...