Length: 13.9 km (8.6 miles) to Kew; 18.8 km (11.7 miles) if you carry on to Ealing. Toughness: 1/10
Meet in the ticket hall of Ealing Broadway station to start at 11:00. There are frequent Elizabeth Line trains (20 mins from Liverpool Street; 10 mins from Paddington) as well as less speedy District or Central line tubes, buses, etc.
If you finish at Kew Bridge there are half-hourly trains to Clapham Jct and Waterloo at xx:15 & xx:45, or you could find your way to Kew Gardens station for the Overground and District line. There are frequent trains and tubes back from Ealing Broadway if you complete the full walk. All these stations are in TfL Zone 3.
This exploration of the waterways and green spaces of west London was last posted five years ago so is overdue another club outing. Its route takes in the Grand Union Canal, Boston Manor and Syon House as well as a long undeveloped stretch of the Thames alongside Old Deer Park and Kew Gardens, with views of Syon's landscaped grounds across the river.
If you want a pub lunch you'll be passing two riverside pubs in Old Isleworth at around 12:45, the London Apprentice and the Town Wharf. Kew Green seems a nice spot to end the walk but you could complete the full circuit with an extra hour or so across Gunnersbury Park and more open spaces to Ealing. Conversely you could curtail the walk by diverting into Richmond after crossing the river, and as with any London walk there are plenty of drop-out points along the way.
You'll need to bring the directions from the L=swc.104.a page; you might also find a London street map helpful.