Canyon Hiking
South Kaibab trail on the way down to the bottom of the Grand Canyon. In spite of warnings posted everywhere, my daughter (she's 23 years old) and I hiked to the bottom and back in one day. Down the South Kaibab, back to the top on the Bright Angel trail. Weather was cool so it wasn't the death-defying feat it can be in worse (hot) conditions.
Glad you had our Tech Pants on, Bob... We won't tell anyone that was your secret to keeping up with your daughter!