Updated August 3, 2023
Starting from Mandalay Bay/Four Seasons at the south end, it's:
A half-mile to Excalibur and the Tropicana at the south corners of Tropicana Avenue. (Add a few hundred yards for MGM Grand and New York-New York at the north corners of Tropicana. From there, add a quarter-mile to Park MGM.)
One mile to Planet Hollywood at Harmon Avenue. (Add a few hundred yards to Paris.)
1.5 miles to Bellagio.
Two miles to between the Mirage and TI. (That's right: It's a half-mile to walk past Caesars Palace and Mirage. On the other side of the Strip, it's a half-mile from The Cromwell past the Flamingo, the LINQ, Harrah's, and Casino Royale.)
2.5 miles to Wynn Las Vegas.
3.3 miles to Circus Circus. (Over to the Convention Center and the Westgate on Paradise is another half-mile-plus.)
3.5 miles to the Sahara.
Four full miles to the Strat.