The 32-year-old man arrested on suspicion of rape has been bailed pending further enquiries police have announced.
A 41-year-old woman was raped in a wooded area, which is accessed by a footpath, near to the canal path in Failsworth on Friday evening.
It is believed the offender followed the victim for around 15 minutes as she walked along the canal path near to Morrisons supermarket.
The woman is continuing to be supported by specially trained officers and support services.
Detective Sergeant Emma Hulston said: “We are continuing to actively investigate this incident and ensure all lines of enquiry are followed. Our team of detectives are absolutely dedicated to piecing together exactly what happened and ensuring the person responsible faces the full force of the law.
“We are really keen to speak to anyone who may have seen the victim or any potential offender who matches the description provided as a matter of urgency. I appreciate that people may hold information that they view as insignificant, but it is really important that any information is passed onto us so we can assess it. Even the tiniest detail could prove vital.