Working as a clinical research coordinator typically requires a lot of travel. If you are working as a coordinator, you probably already know this. The interviewer asks if you are comfortable traveling to various locations conducting their research trials to see that you are aware of this requirement and that you are flexible and adaptable. Many clinical trials are conducted at multiple sites, and you may need to travel to these locations to oversee the study and ensure it is conducted properly.
Additionally, traveling may be necessary to meet with study participants or attend conferences related to the study. Therefore, the interviewer wants to ensure that you are willing and able to travel as needed to ensure the study's success. Be honest and give your availability and anything that might stand in the way of traveling.