Looks like you're going to have to add the run if it's not on EF. It's pretty easy to do.
Step 1: Using Google Earth Pinpoint the exact locations of put-in and take-out. Once zoomed in to where you think put-in is look to the bottom center of the google earth window, it should say the altitude of the location you are looking at. Do not confuse this with the marker on the bottom right which is the camera elevation, not the ground elevation. (If you can not see the actual altitude of the point make sure the "Terrain Layer" is checked under the GE layers window.
While finding the elevation of the put-in and take-out jot down the put-in and take-out coordinates as well. You can plug these points into Google Maps
and make a really easy way for people to find the put-in and take-out locations for your run submission. The coordinates are located in the bottom left portion of the GE window. Write them down and plug them into Google Maps, save the link to the map you create and you can simply copy and paste that into the EF run description where people can just click on the link, go to the google map enter their location and get directions from their front door to the put-in/take-out.
Step 2: Now that you know the elevation and coordinates of put-in and take-out go to: Kayaking Information
and enter the run in.
That's pretty much it. Good luck.