Start a Visual Studio LoadTest automatically via Command Prompt

This does the trick:

„C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\MSTest.exe“ /testcontainer:“C:\PATH_TO_YOUR_LOADTESTFILE\LoadTest.loadtest“ /testsettings:“C:\PATH_TO_YOUR_TESTSETTINGS\TestSettings1.testsettings“

You can even overwrite Values in the LoadTest by using path variables, example here:

http://msdn.microsoft.com/en-us/library/ff426021.aspx