Prepare to Cry: This Amazing Athlete Is Raising $1 Million For His Mom's Health

Michael J. Fox and Sam hiked White Butte in North Dakota with 25 fellow climbers. Sam said Michael was the first to reach the summit!

We dig Sam's man bun.

Sam led an excursion of 30 climbers to the top of New Hampshire's tallest peak.

He had his first "dig deep" moment during this ride: "I love challenging myself physically. I always have, and as long as I can move I'm sure I always will. However, as the miles, sun burns, bruises and sleep deficit pile up, it gets more difficult and indeed physically painful just to keep going. That's when I turn to my mom for inspiration. And not just because she has Parkinson's and is fighting it, but because she's always been tough, she's taught me to be tough in my way, and I feel a healthy pressure to make her proud out here."

Meet Nugget the Pit Bull. So much cuteness in this photo.