To calculate the time it takes for the runner to complete the marathon distance of 42 kilometers at a constant speed of 4.67 kilometers per hour, we can use the formula:
\[ \text{Time} = \frac{\text{Distance}}{\text{Speed}} \]
Substituting the values:
\[ \text{Time} = \frac{42 \text{ km}}{4.67 \text{ km/h}} \]
Now, performing the division:
\[ \text{Time} = 9.0 \text{ hours} \]
Therefore, it takes the runner approximately 9.0 hours to finish the marathon.
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