12.8 Mile Bike Ride

I had a few extra minutes when I got home from work so I went out for a little hour long bike ride.  It was beautiful weather so I hit the trail and tried to get in a few miles.  I know that my biking is weak right now, I'm only averaging about 15 mph and that needs to get up into at least the 18 mph range.  From what I'm reading the only way to increase speed is time in the saddle. 

So, I'm in the saddle every chance I get.