Now that you have completed a run it's time to send to the moderators. First press the button on the home page that says "Submit Run".
A form will appear that needs to be filled out. There are a lot of fields you need to complete, so I will help here.
The "category" field is the type of run you completed. Examples include: All Levels, All Stars, Levels 1-5, etc. The "player" field is your speedrun.com username. You can see yours in the top-right. The "You Are" field is not necessary for single-player runs. You can leave it blank if you want. The "Time" field is the length of the video you submitted. This is not used for ranking. The "In-Game Time" field is the time it took for your run using the in-game timer. The "Region" field is where you live. You can leave this blank if you want. The "Platform" field should always say "Web". The "Date" field should say the current date. The "Video Link" field is where you put the link to the YouTube video. The "Description" field is where you can put anything else you want to say.