Paths: mud
Points of interest: open areas, animals, stream, trees, wildlife, birds
Amenities: parking, toilets, cafe, farm shop, garden centre
Weather: Good for all seasons

This is not a circular walk, so how ever far you get you have to come back on yourself. It could be made circular by walking further onto Radley and getting the bus (Oxford Bus Company City 35) back into Abingdon.
Start at Abingdon Abbey Meadows car park and follow the sustrains national cycle route 5 towards Radley.
The cycle path will take you through the abbey meadows following the river, then through Barton Meadows and eventually a left turn onto Thrupp/Radley Lakes.
Thrupp/Radley Lakes is now owned by the Noorthmoor Trust, and over the coming years I believe they are going to create a circular walk around the lake and also build a visitor centre.
map for route 2.

http://www.forestry.gov.uk/website/Recreation.nsf/LUWebDocsByKey/EnglandBuckinghamshireNoForestCowleaze
Enter Christ Church Meadow from the west side through the memorial garden from St Aldate’s. These are the only gates wide enough for pushchairs to get through. Walk through the gardens and past Christ Church College on your left. This is a circular walk first following the boundary of Christ Church and Merton College, followed by the river Cherwell and then the River Thames and back to the memorial gardens. Depending on the time of year there may be sports being played on the college sports field, rowing on the river and cattle grazing on the meadow.
The Oxford Botanical Gardens can be accessed from the Rose Lane Gate, but you have to pay to enter (you will have to fold down the pushchair to get through Rose Lane Gate). The Colleges are open most days to the visiting public but again you have to pay to enter.
Neptune Woods was planted in 2006 by local children. The woods are to commemorate the 200th anniversary of the Battle of Trafalgar (Neptune being one of the ships) with each tree representing a crew member. There are various types of trees all of which would have been used to build boats at the time. There are boards around the walk with more information.