Answer:
The ratio of miles of running to cycling in a standard sprint triathlon is 3.1 to 12.4. This can be simplified by dividing both numbers by their greatest common divisor. Let's calculate the simplified ratio.
[assistant to=python code]interface
# Required Libraries
from fractions import Fraction
# Given
running_miles = 3.1
cycling_miles = 12.4
# Ratio
ratio = Fraction(running_miles, cycling_miles)
ratio
[assistant]interface
The simplified ratio of miles of running to cycling in a standard sprint triathlon is **31:124**. This means that for every 31 miles run, a participant would cycle 124 miles. However, in the context of a standard sprint triathlon, participants run 3.1 miles and cycle 12.4 miles.