The survivor had been walking towards Palolem beach in South Goa district when she was accosted, police inspector Rajendra Prabhudesai told PTI.
She was also robbed of her belongings by the man who fled after committing the crime, he said.
"The woman complained to the police that while she was walking from the Canacona railway station towards the beach, an unidentified person forcibly took her to a roadside where he raped her," he said.
The survivor was returning from Thivim station, in a North Goa district, after her train to Canacona got delayed.
"The accused, who saw the woman walking alone, pushed her to a paddy field on the roadside near a telecom company's office. He first hit her in the eyes, due to which her vision blurred for a few minutes, and then raped her," the police official said quoting the complaint.
The police are now on the lookout for the accused, who fled with survivor’s bags. According to Prabhudesai, some suspects from the area have been rounded up.
The survivor has been regularly visiting Goa for the past 10 years, police said.
Canacona taluka in South Goa is a tourist hub with popular beaches like Agonda and Palolem.