Sapa is generally considered quite safe for solo female travelers. The locals are often friendly and willing to help, the local crime rate is low, and the area is well-traveled by tourists. Nonetheless, like any other location, it is important to maintain personal safety measures such as not walking alone late at night and keeping an eye on your belongings. Also, be aware that the remote trekking trails might pose a risk if you plan on venturing alone without a guide.