I can't unlock this achievement.

[DragonMasterKnight]

Is it a Bird?
Travel 400 meters without landing

I‘m sure I have traveled over 1000m without landing.

[Raidax]

same here, I was flying for like 5-6min what means more than 1000m and it didn't get the achievement, I think it's bugged or smth, I'm going to verify game cache and try again

[Raidax]

reinstalled the game, verified game cache and still nothing, I completed campaign 100% and still didn't get it, it's bugged

[Sudbeats]

similarly can't get (Is it a Bird?)

P.S.
I got the achievement in Campaign mode - Chapter 1 - 2. Titan's Wrath (flew across the map using only one whip)

[Fednas]

I can not get this success either.
I tested the advice of "Sudbeats", but even after 7min without touching the ground the success does not unlock ...