Bath & North East Somerset Council is closing a section of the Two Tunnels Greenway so that trees infected with ash dieback can be felled.
The shared-use route connects Bath and the Midford Valley and is managed by the charity Sustrans.
The Lyncombe Vale section which includes the Combe Down and Devonshire tunnels will be closed between 9am and 3.30pm from Monday 11th to Friday 15th March to allow for the felling.
Signs will be in place advising of the closure.
The Devonshire Tunnel is already closed until further notice because of drainage problems.
The felled trees will be replaced with other native species.