The d3_smdm2.zip file you have requested: Maps Levels Missions / Deathmatch / S to T Titles / Blood Trail - 7.94mb is not available. Perhaps try browsing all files for the game Doom III and upload any files you want to share or are missing. This is the only information we could locate:
Blood Trail is a deathmatch map from sm0k3r. It runs on both, Doom 3 and Doom 3: Resurrection of Evil. When playing it under Resurrection of Evil, theres a double barrel shotgun waiting for you.