Is it permissible for a woman to travel a distance of 70 kilometers to visit her family without a mahram?

Everything that is considered travel by custom, and in which a woman fears for herself from danger or a forbidden act according to Islamic law, whether its distance is long or short, a woman is prohibited from undertaking it without her husband or a mahram, based on the Prophet, peace and blessings be upon him, saying: "No woman should travel except with a mahram." What is considered is what is customarily called travel. If the mentioned distance is considered travel or if there is fear for the woman in it, then it is not permissible for her to cover it without a mahram.