yes there is! here's a short guide:
1) save the pics to your PC
2) copy them with ActiveSync to your PDA into the proper training folder
/My Documents/Run.GPS/users/<username>/trainings/<trainingmonth>/<trainingdir>
3) start the upload, but do NOT select the scan for images option
see also <http://www.rungps.net/Wiki.jsp?page=DocAssigningImagesToATrainingEN>