Some Twin Flames may meet only to be a catalyst for soul healing and transformation but not for a physical romantic relationship.
Depending on the Twin Flame partner and the nature of your bond, you as a runner can choose to run from your Twin Flame but it does not stop your partner from feeling unconditional love for you.
Just because you run, it does not mean that it will end the truth of the connection — you can choose to have a relationship with your Twin Flame or not but you must confront the situation first. You must give your Twin Flame the closure that they need before you move on from them.
Also, because you choose to walk away does not mean that your Twin Flame will let you have the peace that you need. They can chase you forever until they get the closure that they need.
All in all, you have free will to choose to do whatever that you need.