To find the ratio of the number of female runners to the number of male runners, we can use the given numbers:
- The number of women (female runners) = 23
- The number of men (male runners) = 25
The ratio of female runners to male runners is: \[ \text{Ratio} = \frac{\text{Number of female runners}}{\text{Number of male runners}} = \frac{23}{25} \]
Therefore, the ratio of the number of female runners to the number of male runners is \( \frac{23}{25} \).