Rail users are campaigning for a track connecting Bedford and Cambridge.
On Saturday, June 29 members of Railfuture and Campaign for Better Transport will walk from Bedford to Sandy to highlight the campaign.
The route from Oxford to Bedford is due to open in 2017 and this would extend the route still further.
Susan Dye of the Campaign for Better Transport said: “The new line is vital for people who work or live in the Oxford to Cambridge region.
“We need a 21st century solution to sort our transport chaos. We’re not walking the old route because we want to see the tracks put back on the cycle path; we need an optimum cross-country route balancing cost, environmental aspects, journey time and social benefit.”
The campaigners have not yet decided on a preferred route for the track. They would want it to be roughly the straightest and fastest route possible..
Susan added: “The cycle path is a highly valued route for walkers and cyclists alike and, whatever happens, if the Bedford to Sandy route was chosen for the railway a parallel cycle path would have to be retained, as it was when the Bathgate to Airdrie route in Scotland was rebuilt.”