At the end of 2025, Ukraine controls 6 of the 50 largest cities in Donbass:

The posts linked below contain a list of the 50 largest cities in Donbass based on 2022 population estimates, including the coordinates of three different locations in each city:

For the purpose of this market, a city is controlled by Ukraine if Ukraine has 

 control of all three of the specified locations according to 

This market will resolve to the number of cities controlled by Ukraine at the close date.

This market will close at 23:59:00 UTC on 31 December 2026 and will not resolve sooner.