Single speed, rigid frame and running...what gives???

Tonight I did a super cool workout. It called for a 2 hour bike followed by a 10 minute run. I am sick of my trainer (2 hours on the trainer is tough!), and I'm a wimp on my road bike in the cold.

But for some reason, mountain bikign in freezing temperatures I find fun. But this time, instead of my mountain bike (with front suspension), I decided to do my first single speed trail ride, on my old, steel, rigid fork Bridgestone! It was totally awesome, I only had to walk a few very short (less than 50 feet) sections, except for one long downhill down a "spillway" for a new residential area that was strewn with 6" square sharp edged rocks.

Anyway, I went on my 10 minute run afterwards, which was naturally, very close to a mile, and it actually took me 10:42. So calculating my pace on my 10 minute "non-brick" run after a 2 hour difficult, single speed mountain bike ride... I was FASTER than during my 5K last weekend?!!!

Granted, the brick was flat, the race was hilly, today I've had 2 full days of leg rest, prior to the race, no days of leg rest. But still...

What gives???

Is my body holding back on me? Is my brain playing tricks on me?

Edited by AdventureBear 2006-03-21 10:54 PM