Actually, every year that I have done WCC (whether it was 200k, 100 mi, or modification of the two), I've always had headwinds in the last 30 miles or so. I think it just comes with the territory.

Even though it wasn't my longest, I still felt very fatigued at the end. Not sure why, because I have done 200+ miles, and felt just as fatigued as I did at 120 miles! I guess it may be because I haven't built up enough miles. This was my first century of the year. Imagine that.