The fair place to meet is Orlando, FL — the city closest to the midpoint of Miami and Tampa. From the farther side that’s about 4 hr 18 min of driving.
Recommended midpoint
Orlando, FL
From Miami
4 hr 18 min
205 mi to Orlando
From Tampa
1 hr 56 min
77 mi to Orlando
Tampa has the shorter trip; the split is off by about 2 hr 22 min. The alternatives below can even it out. Miami and Tampa are about 206 miles apart.
Miami and Tampa are about 206 miles apart by road. Split the difference and you arrive near Orlando, the city closest to the halfway point between them. That puts roughly 4 hr 18 min of driving on the Miami side and 1 hr 56 min on the Tampa side — the fairest single meeting point among the cities near the middle.
At this range, Orlando works for a same-day meetup: close enough from both Miami and Tampa to meet for lunch or an afternoon and still be home by evening.
If Orlando doesn't have what you're after, Atlanta and Birmingham are also close to the midpoint and worth a look — each keeps the drive reasonably balanced between Miami and Tampa.
Orlando is a city in and the county seat of Orange County, Florida, United States. Part of Central Florida, it is the fourth-most populous city in the state and its most populous inland city, with a population of 307,573 at the 2020 census. Read more →
Miami is a coastal city in the U.S. state of Florida. It is the second-most populous city proper in Florida, with a population of 442,241 at the 2020 census. Read more →
Tampa is a major city on the Gulf Coast of the U.S. state of Florida and the county seat of Hillsborough County. Tampa's borders include the north shore of Tampa Bay and the east shore of Old Tampa Bay. Read more →
City descriptions adapted from Wikipedia (CC BY-SA); photos via Wikimedia Commons, credited above.
Estimates use straight-line distance and typical road speeds; real drive times vary with route and traffic.