A Times news article about school mask mandates reports, "Newton and Boston, about 10 miles apart, give an idea of how two politically liberal and cautious districts are approaching the choice — and how and why they may come to different decisions."
It's not accurate that Newton and Boston are "about 10 miles apart." They actually directly border each other in at least two places—the Boston neighborhood of West Roxbury and the Newton neighborhood of Oak Hill, and the Boston neighborhoods of Brighton and Oak Square and the Newton village of Newton Corner. The Massachusetts Secretary of State has a map (pdf) of the cities and towns in the commonwealth that shows Newton and Boston are adjacent. If you are headed east on the Massachusetts Turnpike, you pass directly from Newton into Boston.