Still looking for vacation plans this summer? We may be able to help—all you need is an unhealthy obsession with baseball, a functioning automobile and five weeks to spare.

Ben Blatt of the Harvard Sports Analysis Collective recently built a computer program that devised the best way to visit all 30 baseball stadiums in the shortest possible time. The results are not for the faint of heart—it's a grueling, convoluted journey sending courageous souls on a 35-day road trip covering more than 18,000 miles of American (and briefly...