THREE RIDDLES

1)
A circular track with three racers,
Each a different height,
Each running at a different speed.
No start or finish to this race,
No winners or losers either.

2)
Fluffy as a pillow,
Sweet as cherry pie;
Eleven letters in me,
But not a single "i".

3)
I carry loads,
Both great and small.
I cover all,
Both short and tall.
I'm in the far North,
As far as you can go,
And still be in
The land of the Eskimo.

Answers:

1. A clock 
2. Marshmallow

3. Answer in verse:

I may have handles,
I may have wheels,
I may cover tombs
Wide or narrow; 
I'm also in Alaska's north,
And I am known as BARROW.