Below is a series of lists showing the value of Payload Progress Percentage at each non-final checkpoint on all standard Escort and Hybrid maps.
This data was gathered with the import code 7829N. Note that payload speed affects the results, in this code payload speed is set to 50% to be more accurate while not taking too long to gather the data.
Escort Maps
Circuit Royal
Checkpoint 1: 34.32%
Checkpoint 2: 66.64%
Dorado
Checkpoint 1: 32.18%
Checkpoint 2: 68.02%
Havana
Checkpoint 1: 31.16%
Checkpoint 2: 63.74%
Junkertown
Checkpoint 1: 32.56%
Checkpoint 2: 63.53%
Rialto
Checkpoint 1: 33.48%
Checkpoint 2: 69.60%
Route 66
Checkpoint 1: 33.85%
Checkpoint 2: 70.26%
Watchpoint: Gibraltar
Checkpoint 1: 33.49%
Checkpoint 2: 65.49%
Hybrid Maps
Blizzard World
Checkpoint 1: 50.47%
Eichenwalde
Checkpoint 1: 65.39%
Hollywood
Checkpoint 1: 60.10%
King's Row
Checkpoint 1: 62.01%
Numbani
Checkpoint 1: 57.44%