While some of us spend chunks of our day in search of a coffee shop with decent WiFi, others have jumped on the 4G train. But finding a signal outside the Beltway has often been a challenge.

Clear, which provides WiMax coverage to both Sprint and Comcast, was the first provider to turn on their 4G network in D.C. last summer. But with a limited selection of 4G phones available at the time, most consumers didn’t exactly jump on board. Today, Clear is announcing that they have just turned on additional coverage, focused on the outer reaches of both D.C. and Baltimore, extending their 4G goodness to an additional 300,000-plus people, about a 10 percent bump in coverage.

Looking at Clear’s coverage map, it looks pretty good around the population centers from Towson, Germantown and Annapolis in Maryland all the way over to Lorton, Centreville and Leesburg in Virginia. (Here’s Verizon’s LTE map, AT&T and T-Mobile for comparison.) CNET has a combined coverage map, but that says AT&T is the best, which seems a little hard to believe.

Not to be outdone, Verizon said it would have its LTE network available in 175 cities by the end of this year, also noting that the 4G HTC Thunderbolt was one of its most popular phones in the first quarter.

While D.C. was recently found to have the worst cellphone coverage in the country, hopefully this means 4G coverage is going to get better.