The Winton School pupil said he realised he was lost about five minutes after he started walking. His first thought was to get out of there before it got dark.
He said he had no idea where he was and he walked through bush the whole way.
He had food and warm clothing and the day was "hot as", so he filled his drink bottle at creeks as he walked.
He was a "wee bit scared" and relieved to reach the dairy farm.
Ms Read said shock and fear quickly turned to relief after she received Baily's tearful phone call in the late afternoon.
She could not reach the men, who were out of cellphone range for several hours, but finally reached her flatmate, who was "really relieved" the boy was safe.
Baily was a fit, "outdoors kid" who did athletics and was a good sprinter, but if he ever got lost again she hoped he would stay put, she said.
At home after school yesterday, Baily said it was only his second time pig-hunting, but the experience had not put him off.
Senior Sergeant Dave Raynes, of Invercargill, said a search and rescue operation was launched, and a helicopter was about to take off when the call came in just before 5pm that the boy was safe.
- Otago Daily Times