What's the max length of the URL for the Route Service API endpoint?

[ZacharyFranco]

The reason I ask is because it looks like it only takes request parameters making me believe it's a GET and not a POST which wouldn't be concerned with a request body. The standard length of a URL is around 2000 characters which doesn't sound like enough if you wanted to pass 10,000 coordinates to the asynchronous Route Service endpoint.

Route Service Documentation

[ZacharyFranco]

I figured out how to do it using POST. You need to use x-www-form-urlencoded instead of just a raw json object.