However, the specific situation may vary from person to person. Some people may just want to find a running partner and have no other intention. However, it is also possible that some people will take this opportunity to express their interest in you or hint at your intentions.
Therefore, if you are interested in this girl, you can accept her invitation, observe her performance and words in the interaction, and understand her true intentions. If you are not interested in her, you can politely refuse her invitation, or just tell her that you don't want to be misunderstood.