I have a line that I need to split into equal lengths. In this case the split will be 1000 foot segments.
Open your processing tool box and search for ***v.split***. ***v.split*** is a tool in the GRASS toolset in QGIS.
Be sure to put 1000 in the maximum segment length. If you do not adjust the file location it will be written to a temporary file location. There are several other options you can adjust but for this example I left them default.
After the processing tool runs you will have a new feature that has been split into 1000 foot segments.