For my dad's 69th birthday my sister Jen and I went on a hike with him. But he didn't want to go on some easy going leisurely hike, he wanted to hike to the top of Mount Olympus. If you've done this hike then you know that it's long and strenuous both going up and down. It's not for the faint of heart. But my 69 year old dad hiked it like a champ! No matter how many years he adds to his age, he will forever be a young-hearted (even immature), adventurous, energetic man who is always excited to get out there and be active and explore. I'm proud of you dad! Now all we need to do is Lone Peak, Twin Peak, and Mt. Timp. Start training . . .