[Haku is somehow barely even acting winded, like she has infinite energy, but Sen is definitely flagging noticeably as they get towards the house, likely enough for Amaterasu to outstrip him. Momo is keeping his pace, but partially out of sheer determination - he's more used to a steady pace over long term than sprinting for an extended period, so he's probably going to be very winded when all is said and done.

In the end, Haku is the clear first, using all that puppy energy to her advantage and then prancing around in place to wait for everyone else. Momo tries to push for a little extra speed in the very end, and practically just runs into the side of the house, hands out and leaning over a bit so he can catch his breath.

There's still a big grin on his face, though, unusually long canines visible as he breathes.] Ah...it's been a while since I got to go all-out like that! Haku thrashed all of us, though, I wish I had all that puppy stamina...

[Sen pretty much just gives up running when Haku and Momo get to the end, bringing up the rear at a lazy walking pace instead.]