Balthazar will aim an eldritch blast at one of the tires of the carriage in front of them: Attack: 6 Damage: 10

The wheel bursts, the carriage falls over, rams into yours, and Snollic nearly falls off. The carriage smashes into the apple kart, breaking into pieces and littering apples all over the place, even your carriage. Kront'al gets caught in the collision and takes 14 bludgeoning damage, luckily, he falls into the carriage. 

Kront'al  STR check  22   DEX check  19

OCC  Doesn't Kront'al get to apply these before he gets caught in the collision?

(You didn't do anything for a while, but OK)

You push it out of the way in time, and make it back in the moving vehicle as if you were in an action movie.

Another portal comes into view, the green and blue hues of light make it visible from a distance. It leads over to SaltBreeze Lighthouse, a landmark of the kingdom, it has cyan and white stripes wrapped around its support, the base is made of stone and has cracks all around it, the terrain is sloped slightly steeper than the hills of the lost, and goes on a U-turn around the lighthouse, make two athletics checks to navigate the hills and the U-turn

snilloc readies his crossbow, aming for the person in front of us when the time is right

Atheletics ck  13   8

As Kront'al leaps back aboard, a la Jet Li, he will snag some apples to use as discouragement devices for the next carriage that gets too close.

DEX ck   20

"Take care rounding yon lighthouse, the sloped ground could be a bit tricky," he cautions.

Kront'al somehow takes control and steers the carriage around the lighthouse, after another right turn, you spy another portal. (Either Kront'al or Dalfen make another athletics check to navigate the sharp right turn.)

Athletics Ck  19

 Dang, he loves this stuff!

Athletics: 14 

Dalfen falls off the coach area into the seating area, and somehow, once again, Kront'al steers it clearly through, the next portal leads into Prism Town --the starting point of the campaign--. there is a stained glass window showing a picture of the lighthouse blocking the road, after that is a sharp left turn. (Kront'al make an athletics check with disadvantage, and anyone find a way to remove the obstruction.)

investigation check to figure out why in the love of god(s) there is an giant, beutiful stained glass window blocking the road and who decided to put it in the middle of an road during an cart race 16

There are several possibilities to how it was put there, and is impossible to tell why or how exactly.

well snilloc will just start shouting, both to his fellows in the cart race and to his competitors halt, halt, we must not destroy this fine stained glass window, and may somebody please move it so the competition may continue?

You let someone pass you and they crash right through the window, shattering it into pieces. "See you later, sucker" Snollic hears one of them say.

wellp, at least we dont have to pay half our winning money on paying of dept unlike you idiots! he says, then turns to his companions onwards, we have an race to win

he also makes a bit of a shot against the brats who passed us atk roll 20

Kront'al swings his staff two-handed at the driver of the carriage as it shatters the stained glass.

Attk   19   Dmg  7 

Leaping up to kick him twice (1 Ki point)  Flurry of Blows  Attk   14   Dmg   8   Attk   10   Dmg   8

You hit him in the nuts with your staff and he falls off the carriage. The carriage runs straight through a house, and crashes into a tree. For the fury of blows, you miss and fall on your side, and it stings.

snilloc reaches out with his hand towards kront'al so that he can grab it and be back on the carrage (assuming he is on the ground) "back on your feet, we cannot let those huligans win, now can we" as he does he drops a bit of an rally manuver on our monk 11

Kront’al will grab Snilloc’s hand and swing back aboard.

DEX.  22

”My thanks, Snilloc.” Kront’al grins broadly. “Our weird may just be to win this.”