Chris Sharma has sent his project at Clark Mountain called Jumbo Love, suggesting a rating of 5.15b and likely the hardest route he’s ever done.
From Climbing Narcissist:
Jumbo Love begins with 60 ft. of 5.12d climbing followed by 100 ft of steep and bouldery 5.14c. THEN you get to the hard part which is followed by some easier 5.13+ climbing that takes you to the top of the cliff (literally!). Just think about that for a second. You have to navigate 160 ft of 5.14c climbing just to get to the hardest parts of Jumbo Love!