How long is the Havana Marathon course open for?

The Havana half and full marathon, and 10k race start at 7:00AM. The race course itself is 13.1 miles or the distance of a half marathon. The half marathon is completed by one lap around the course and the full marathon is completed with two laps around the course. Said differently the Havana Marathon is two half marathons. 
The race course is open for a total of five hours. The time scheduled for registered half marathoners is from 7:00 to 10:00 AM, allowing runners to complete the competition in up to three hours. The schedule for full marathoners is from 7:00AM to 12:00PM, allowing participants to complete the race in up to five hours. Half marathon runners that are unable to complete the course in three hours will have no problem as the race course itself is open for five hours.