Runway is currently only natively available in American English. If you're interested in using Runway with a different language, Chrome offers an in-browser automatic translation service that will localize the text on the Runway interface into any language of your choice.
1. Make sure you're using Google Chrome
Runway works best on Chromium-based browsers, and using Chrome will allow for automatic translation options.
2. Right click on any Runway page
This will open a drop-down menu of options.
3. Select "Translate to [language]"
The language displayed in this drop down is based on your local device's settings, so if you do not immediately see the language you want to translate Runway to displayed, click this option anyway.
4. Click on the translation button in your address bar, then click the three dots
After step 3, a new button will appear in your address bar. Selecting it and then the three dots will allow you to Choose another language. Pick your preferred language from the list that appears.
4. Click "Translate"
Runway's full interface will automatically be translated into your preferred language.