Post the most difficult hike you've been on whether it be due to elevation change, weather conditions, or anything else.

>determined to hike down to the bottom of the the Grand Canyon and back out in 1 day
>plan to descend South Kaibab and climb back up Bright Angel trail ~19 miles
>miss bus at 6am to South Kaibab trail, next one doesn't depart until 7 am
>decide to flip the route and descend Bright Angel instead due to time constraints
>failed to realize that all water sources on the South Kaibab were still shut off in March
>Hiked up hill 10 miles with a 6000 ft elevation change with only 2 liters of water
>run out of water 1.5 hours before making it to the top
Had it not been so early in the year, I probably would have died due to dehydration. At least I learned to never change your plans at the last minute
>pic related: climb out from the colorado river about 1/4 of the way up the canyon