Colorado Springs is about 2.5 times smaller than Rome.

Rome is approximately 1,287 sq km, while Colorado Springs (map shows its 11 named neighbourhoods; the area covers the whole city) is approximately 523 sq km, making Colorado Springs 40.66% the size of Rome.
Tip: This to-scale comparison of Rome vs. Colorado Springs 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.