Rome is about 2.5 times bigger than Colorado Springs.

Colorado Springs (map shows its 11 named neighbourhoods; the area covers the whole city) is approximately 523 sq km, while Rome is approximately 1,287 sq km, making Rome 146% larger than Colorado Springs.
Tip: This to-scale comparison of Colorado Springs vs. Rome uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.