Transport for London data shows the route has been used by up to 2,400 cyclists a day, including up to 365 an hour in the evening peak.
It has also helped to reduce the number of cyclists using the adjacent shared walking and cycling path inside Hyde Park, though this parallel route — on Broad Walk — remains more popular.
TfL is preparing to hold a six-week consultation this summer to decide whether to modify, retain or scrap the protected bi-directional route that runs along the western edge of Park Lane.
It was introduced in May 2020 as part of the citywide Streetspace programme to encourage Londoners to walk or cycle while freeing space on public transport for key workers at the height of the first wave of the pandemic.
But it sparked controversy because it reduced the number of northbound lanes for general traffic on Park Lane to one in places.
TfL’s monthly data on the number of cyclists using the new route has been published after a freedom of information request.
Counts were carried out at Brook Gate and Stanhope Gate and on Broad Walk during the morning, lunchtime and evening periods.
Simon Munk, of London Cycling Campaign, said: “If we’re serious about the climate crisis, about active travel, inactivity, pollution and road danger we need a lot more routes like it.”
Tony Devenish, a Conservative member of the London Assembly, said: “Park Lane cycleway is still remarkably empty for much of the time. Bus times have got a bit better but buses are still being held up by a lot of traffic on that road.”