Hi there, I am a solo female traveler and started my Camino Portuguese today from Porto. I was followed by a man in a white van for the beginning of my walk on the coastal route. He looked local, wearing a purple top and light pants. He followed me on the board walk and was making kissing noises. He eventually drove away... Never had a problem like this before on the Camino. It reminded me to turn on the emergency function on my phone. Press the on off button five times to to call the local emergency service and sound an alarm on iPhones. . Keep an eye out and be safe out there!