Enjoy and easy cycle or walk around this pretty lake in Milton Keynes. A lovely waterside paths runs around the perimiter of the lake so it's perfect for families. There's a free trim trail with outdoor gym equipment and a table tennis table. There is also an excellent pub called the Caldecotte Arms where you can pick up a bite to eat. Walton Park and lake are right next to Caldecotte Lake so you can easily extend your outing there.
The lake is located on the Grand Union Canal - you could pick this up and head a couple of miles north to the super Willen Lake where you will find more waterside walking and cycling.