Known issueFixUpdated · 10 replies on Steam
Forza Horizon 6: City II Weekly Challenge 3 bugged? (Workarounds)
Short answer
No confirmed fix yet. Players suggest: Worked for me.
The problem
I have done it three times and it won't register. I have 211km/h in two and 214 on the bridge. Either 1 or 2 stars in under 2 minutes. RIP
What players suggest
Worked for me. That said it can still be bugged for some. To be sure - you did the speedtrap and two speedzones on the highway?
yeah you can't fast travel, I figured that one out the slow way hahah! you have to drive round all 3, but you can pause to check your map/set a route. I think I did it anti-clockwise, starting with the speed trap, then the two speed zones.
Did this work for you?
Source: original Steam Community discussion. Quotes are shortened; all credit goes to the posters.