As we can see in this map, the Colosseum of Rome It is close to the Roman Forum, so we can see both by taking a walk. In addition, it is an area well connected to the rest of the city by metro and bus. You have all the information in: «Rome tourist guide: what to see, itineraries and recommendations«.
You have all the information in: "Rome tourist guide: what to see, itineraries and recommendations".