you were all in the training grounds, doing a challenge Mina came up with. All the girls (except for the 1-A girls) from the school were at a starting line and Bakugo was at the finish, which was almost half a mile away.

Mina: "the first one to reach Bakugo gets to kiss him! Quirks are allowed! Good luck!~"

Uraraka: "3! 2! 1! GO!"