The White Whale. 1  Belugas (Delphinapterus leucas) are one of the most recognizable and popular whales because of their white skin colour and âsmilingâ upturned mouth. They are extremely sociable mammals that live, hunt, and migrate together in pods, ranging from a few individuals to hundreds of whales.
Here's what these terms mean: 1  Pace: Your immediate pace in minutes per mile or kilometer. 2  Average Pace: Your cumulative average pace for your current session in minutes per mile or kilometer.
Use the pace calculator to find out. The average race pace that we calculated for all half marathon (13.1 miles) runners in 2010 was 10:33 per mile. The fastest pace calculated out of over 24,000 runners was 4:54 per mile.ompare your race pace to over 24,000 different US half marathon runners that ran in 2010. We've generated the charts below based on these collected race results.