How to view your times?

[Miuna]

So, trying for the clear legendary in 3 hours thing, now i learned online that times are accumulated so it works by your best times on each level (thankfully meaning i can do it at my own pace and in any order and try levels again if my times aren't great), my issue i am having is, how do i view my times? So i have played campaign in full on Legendary (first run with skulls) and then i played it in full on easy (didn't realise the thing had to be done on legendary) but neither of these times are displayed.
I want to track my progress so i know what time i am at and which levels to re-try (whilst hopefully doing it at my own pace so not timing it out-sourced).
Is there no direct way to view these?

[Sternritter D]

I guess the best way is to check your service record on Halo Waypoint. It shows your best difficulty, score and time for each mission.

[Tropical Dookie]

I know this is old but for anyone in the future the best way is on the main menu in the bottom left click -> Options & Career -> Leaderboards -> Campaign Timing. Then select whichever campaign you are wanting to view and then you can look at each level against your friends list or globally make sure to sort it to the correct difficulty as well. you can do the same thing to check scoring as well just pick score instead of time.