When Chert is stretched out sleeping she's about 27" from one end to the other - the enclosed sides on the bed make it just a little too confining for her. I think she's a little bigger than most beagles we've met. She's about 32 lbs., but is kind of long and short. If you're coming to the Oregon Gathering you could try it out then. It's yours if you think your beagle would like it!
P.S. If you find that the bed is too small, you could add a folded up blanket to it, raising the level of the bed enough that your dog could strech out and ooze over the sides.