On 1 servers with real players, out of 2 Steam servers that run it now, fakes and empty ones included. Checked 01:16 UTC.
kz_kzro_mountainroad is a KZ (climb) map: you jump your way to the end as fast as you can. It is not one of the maps that come with the game, so servers send it to players from the Workshop when they join.
Over the last 30 days kz_kzro_mountainroad was the #1060 map on CS2 community servers, with <1 real players on it at any moment on average - 0% of everyone playing. It ran on about <1 servers with real players at a time. Right now 3 people play it on 1 servers, most of them on servers in Ireland. It is busiest on Monday around 11:00 UTC and quietest on Monday around 02:00 UTC.
Right now 3, on 1 servers from the Steam server list. Over the last 30 days it had <1 real players on average at any moment. Fake servers and bots are not counted, and Valve matchmaking is not in the list.
On Monday around 11:00 UTC. The grid above shows every hour of the week in your own time zone.
The busiest right now: CS2 KZ #53 [DE] — CYBERSHOKE.NET (TIER 4-5 - MEDIUM) (3 players), CS2 KZ #331 [RU] — CYBERSHOKE.NET (TIER 4-5 - MEDIUM) (0 players). The full list is under "Servers running it now", and every server has its own page with its history.
de_mirage43,283 players on average
de_dust217,898 players on average
sandstone_fb14,427 players on average
de_mirage_fps6,326 players on average
awp_lego_25,436 players on average
awp_lego_2_fb4,827 players on average
de_mirage_christmas2,852 players on average
<null>1,277 players on average
bhop_emevaelx31,052 players on average
duels_mirage_1x11,027 players on average
de_inferno890 players on average
de_nuke760 players on average