Boston is about 2.3 times smaller than Reno.

Reno is approximately 282 sq km, while Boston is approximately 124 sq km, making Boston 43.93% the size of Reno.
Tip: This to-scale comparison of Reno vs. Boston 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.