Self-Guided Routes (1 to 5 days)

From http://www.fodors.com/community/europe/just-1-or-2-or-3-days-in-rome-here-are-free-self-guided-itineraries.cfm

One Day in Rome? (from Summer in Italy website)
http://www.summerinitaly.com/planning/rome_sightseeing.asp

Rome for 2 days, Tripadvisor
http://www.tripadvisor.com/Travel-g187791-c2687/Rome:Italy:2.Days.In.Rome.html

Rome 1 or 2 days, from Cruises.about.com
http://cruises.about.com/cs/europe/a/rome.htm

Three Days in Rome, WikiHow
http://www.wikihow.com/Spend-Three-Days-in-Rome

1, 2, 3 Days, Rome step-by-step (from Rome.info)
http://www.rome.info/itineraries/

Three Days in Rome — msnbc.com
http://www.msnbc.msn.com/id/6576271

Rome for 3 days — Reids Guides
http://www.reidsguides.com/italy/destinations/lazio/rome/rome_itin_3D.html

3 Day Itinerary Rome — Open Travel
http://www.opentravelinfo.com/travel_guide/europe/italy/rome_a_recommended_3_day_itinerary

5 days in Rome — Italy Guide
http://www.italylogue.com/planning-a-trip/itinerary-for-5-days-in-rome.html

Day 3 Itinerary for Rome — Frommer’s (Days 1 and 2 are already featured above)
http://www.frommers.com/destinations/rome/suggested-itineraries/in-three-days

Rome Public Transport
http://europeforvisitors.com/rome/mobile/transportation/rome-metrebus-tickets-and-fares.htm