The volunteers spent a day helping the Trust repair sections of towpath near bridge 90B by filling in potholes with gravel to help create a puddle free walking route to the centre of Milton Keynes.
Sonny King, volunteer leader for the Trust, said: "Canals and rivers are a terrific resource to have on our doorstep and we only hope more people follow the lead of groups like this in caring for their local waterway.
"The volunteers have done a brilliant job and worked really hard all day helping to improve the towpath. Most of our time and money is spent on major priority repairs like repairing locks, bridges, aqueducts and towpaths, so the work of our amazing volunteers is essential and brings huge and equally vital benefits."