Just because the challenge log items don't scale past 60 doesn't mean they aren't a great source of experience. Since you should be doing dungeons anyway that's 3 challenge log rewards that you should be getting without even aiming for them.

The challenge log offers a way to break up the monotony of the other tasks. Take a break from dungeons for a bit and hammer out a couple fates. Or do a few levequests. 20 levequests + challenge log can alone be around 650k experience. 10 Fates + challenge log can be over 300k experience. Sprinkling those in between your other activities throughout the week to snag near 1 million experience? Sounds worth it to me.

Quote Originally Posted by Sapphic View Post
Couple of things to add there.

...If, on your way to a quest and pass a FATE in progress, jump in or just do enough to earn gold and move on if no one there. It's still XP and both add up. I got to 60 on MNK and still had some 56 quests, majority of 57 quests and all of 58-59 quests left for levelling PLD.
This really only worked for me in Coerthas Western Highlands, Dravanian Forelands, Cloud top area where there were a lot of active people in the zones that can't fly yet. Once I got to Churning Mists I noticed no one doing FATEs, so there were hardly opportunities to "jump in an out of opportunistic FATEs". I think that's valid advice from 50-53 but beyond that you won't find much opportunity for it.