To determine how difficult it is to run 3 miles in half an hour, we need to consider the average speed at which the distance is covered.
Since 1 mile is equivalent to approximately 1.609 kilometers, we can calculate the average speed as follows:
Average Speed = Total Distance / Total Time = 3 miles / 0.5 hours = 6 miles/hour
Therefore, to run 3 miles in half an hour, you would need to maintain an average speed of 6 miles per hour. The difficulty of achieving this speed depends on an individual's running ability and fitness level. For some experienced runners, maintaining a pace of 6 miles per hour might be relatively easy, while for others it might be more challenging.