Olympic Swimming Field

Here, there are 8 lanes. They start at the chairs at the beginning of the track. They keep going until they get to one side. Then they go back the other way; this applies to all 8 lanes. Bloons are 2x slower. The bloons go down the right side of the lane, & then they go down the other way on the left side. Water? yes

Place where no towers are allowed

 * The start with the chairs

Places where towers are allowed

 * Ropes for land towers
 * Land at other end
 * Land behind starting chairs
 * Between the 2 bloon lanes (only water towers)