From the perspective of cultural tradition and etiquette, people usually have a period of time to adjust their mood and mental state after attending a funeral. This period is called "mourning period" and usually lasts for several days to several weeks. During this period, people may feel sad, heavy and anxious, and may also feel unwell, such as headache, fatigue and loss of appetite.
Therefore, whether it is suitable for long-distance travel after attending the funeral depends on the actual situation of the individual. If you feel unwell physically and mentally, or find it difficult to get rid of the sadness and depression of the funeral, then I suggest you not to travel long distances immediately, so as not to increase the emotional and physical burden. On the contrary, you can choose appropriate ways to relax, such as sitting, meditation, walking and so on. If you feel that you have adjusted your mood and mental state, you can try to travel for a long time, but you should also pay attention to maintaining a good physical state and safety awareness.
In short, whether it is suitable for long-distance travel after attending the funeral depends on your actual situation. If you feel uncomfortable or have religious restrictions, you can postpone your trip or choose other ways to spend this time. It is important to respect traditional culture and etiquette to show respect and grief for the deceased.