I am in Base3 and in mid April I started to ramp up the hours/miles per week. By the time I got to about 120+ per week (I did ramp up somewhat gradually, but I haven't ridden at this volume for about 12+ years), I started experiencing sharp pain on the outside of my right knee during pedalling, on a 30 mile ride, and it has returned in subsequent rides after about 15 miles, getting worse every time. I took a 7 day break, and then did a 30 mile ride that was the worst yet. All this riding was 90+ RPM cadence. (OK, so I finally got a clue and stopped riding 30 miles at a time, till I can figure this out!) Before I go further, let me say that I already have an appointment with the Orthopedic specialist on Monday, but in the meantime I am wondering what the root cause of this problem are. Here are my theories in decending order of likelyhood: 1) I seem to have some mild pronation and perhaps the increased mileage is bringing this problem to the fore, and maybe related to my new SPD-SL pedals, though the cleats were professionally fit. 2) Tendinitis in the tendon(s) of the calf. When I got off the bike it was hard to reproduce the pain, except when climbing stairs and certain knee rotations. This may have been caused by experimenting with pedal stroke. 3) Increasing mileage too fast. I think I was increasing beyond the 15% per week recommendation. Tell me it's not so! My question is has anyone experienced any of these scenario? Does it make any sense? Should I just stop thinking about this until I see an expert? My issue is I want to get back on track quickly, so I am looking to bottom out on the problem quickly!