From the link...
Over three weeks and one day, Alex Honnold and Cedar Wright pulled off a unique adventure in their home state of California: enchaining all of the state's 14,000-foot-plus peaks (and then some), using only two bikes and their own two feet for transportation.
the two biked more than 700 miles, hiked at least 100 miles, and climbed over 100,000 vertical feet, often via difficult technical rock climbs. The two free-soloed every route they climbed, up to 5.10a. They took about five rest days.
Certainly an impressive feat.
... though this bit has me a little confused.
Another great day was the Whitney, Muir, and Russel day. I soloed the east face of Whitney while Honnold did the Keeler Needle, then we met and did the standard on Muir, and then headed over to Russel,
Does this indicate that they didn't both do all the peaks, but claimed them as a shared experience??
In any event it is an achievement that deserves respect, and if they simul-soloed the other routes, then that would have been an additional risk for the lower climber due the choss likely encountered...