Strange. I don’t think the 429 status is referring to the absolute # of calls you are making. I think it is referring to the frequency of the calls. I would try waiting in between calls if possible to see if that helps. If not, RapidAPI may be able to help troubleshoot as they are the ones that track the # of calls.

like once a day, i try fetching trails from 100 random cities using explore without gpx data. though i can call 500 free calls per day / now one thousand with pro subscription, i still get data: { message: ‘Too many requests’ } , status: 429,

How often are you sending requests?