Note - copy and paste these links, they are not clickable 


These are working:
RAC 2014
http://trial.autodesk.com/SWDLDNET3/2014/REVIT/DLM/Autodesk_Revit_Architecture_2014_English_Win_32-64bit_dlm.sfx.exe
RST 2014
http://trial.autodesk.com/SWDLDNET3/2014/REVITST/DLM/Autodesk_Revit_Structure_2014_English_Win_32-64bit_dlm.sfx.exe
RMEP 2014
http://trial.autodesk.com/SWDLDNET3/2014/RVTMPB/DLM/Autodesk_Revit_MEP_2014_English_Win_32-64bit_dlm.sfx.exe
Revit LT 2014
http://trial.autodesk.com/SWDLDNET3/2014/RVTLT/DLM/Autodesk_Revit_LT_2014_English_Win_32-64bit_dlm.sfx.exe 


To download, you could use admintool download as per this link, or just use any download manager.


Revit 2014 download link should be:
http://trial2.autodesk.com/SWDLDNET3/2014/RVT/DLM/Autodesk_Revit_2014_English_Win_32-64bit_dlm.sfx.exe
(not yet live, not working 3.30pm 1 April 2013)