Take a walk through Jericho, then head to the river. On the opposite bank is a pub / restaurant called The Perch (http://www.the-perch.co.uk/) which is fabulous - open fire, leather sofas, friendly staff, good food. You can follow the river up north. After about 2 miles you get to Wolvercote where you find another pub / restaurant called the The Trout Inn (www.thetroutoxford.co.uk). It's next to a lock and in summer is a brilliant place to sit outside. If you are tired of walking busses will take you back into Oxford.