Wikiloc uses Geonames
I could say many things about the Geonames.org web services and all good.
If you are doing something 'geo' I highly recommend you to take a look at what Marc Wick offers you in geonames.org
The only thing that could be improved in the free web services is the response time. Wikiloc relies heavily in geonames so it was time to switch to the commercial version, speed up wikiloc and at the same time collaborate in keeping the initiative lead by Marc in good health.
So from now on when you look for a place name in Wikiloc.com, you'll get results much faster.
Enjoy!