If you want to beat the crowds and heat of summer, March may just be the best time to pack up and make a trip to a national park. Here's our list of some great parks to visit this month and all throughout the spring season.

Timed entry, long lines of cars at the gates and trails crowded with people angling for the best photos ops. Visitors aren’t likely to find any such hurdles at the least visited of the United States’ national parks.

Get ready! If you are planning a trip to a national park or two or three this spring or summer, you may have more concerns than crowded hiking trails, lack of cell service or unexpected thunderstorms.