Revd Stewart Hartley, vicar of St Anne's Church in Thorburn Square, has embarked on a sponsored walk along the route of the Jubilee line to raise funds for urgent repairs to his church building.
The Victorian church stands in the middle of Thorburn Square surrounded by housing that was rebuilt after the Second World War.
A recent inspection revealed that St Anne's building is suffering from damp and the congregation must now find at least £70,000 for urgent works if the church and hall are to remain open for worship and community activities.
The parish has launched a "Save St Anne's" campaign to keep the church's doors open and the vicar, Revd Stewart Hartley, has marked the start of a fundraising drive by carrying out a sponsored walk along the route of the Jubilee line.
Last week the vicar walked from Stanmore to Baker Street and this weekend he will cover the rest of the line with walks from Bond Street to London Bridge and Stratford to Bermondsey.
The tube line is 22.5 miles long but the ground-level walking route will be much longer.
Details of how to sponsor Stewart Hartley's walk can be found on the church website.