The Hare and the Tortoise

Most of you will know the story of the hare and the tortoise with the moral tag "slow and steady wins the race".





In this version 
The race is 10 km (kilometres) long.
The hare runs at 10 times the speed of the tortoise.
The tortoise take 2 hours and 30 minutes to complete the race.
The hare arrives at the finish 30 seconds after the tortoise. 

For how long does the hare sleep?