I had exactly 45 minutes between when I finished mowing the lawn and when I had to leave to pick up my son at marching band practice. I pulled out the X bike and took to doing laps.
After a warm up, once per mile I would come out of the saddle on a slight grade and sprint for about 100 yards. The cool down would occur on the opposite side of the neighborhood where the street goes down in grade.
The Brooks is surprisingly comfortable for wearing street clothes.
Distance: 9.8 miles 2012: 395.5