What's a 5.6 route you've felt challenged on? And was it the runout that did it, or the actual physical difficulty of the moves? I ask because I've done a lot o

What's a 5.6 route you've felt challenged on? And was it the runout that did it, or the actual physical difficulty of the moves? I ask because I've done a lot of climbing outside and I never ran across something that was graded 5.6 but that was as physically demanding as a V6. I have climbed long, highly runout 5.6 that required good mental fortitude.