After 3-4 months off from running due to some knee issues, in January I started ramping up my miles on the treadmill. I still experience a creaky knee when climbing stairs, but at least there is no pain. And during my runs I need to warm up gradually… starting with a quick walk for a few minutes, then a slow jog, and then eventually I can push myself fairly hard. If I start running hard too quickly, my knees definitely let me know.The majority of my runs so far have been on the treadmill but I plan to hit the streets again as the weather warms up and daylight starts sooner. I had a nice 8 mile run on Saturday, my longest run in quite some time, though my knees were a little more sore after it, likely due to the difference of running on pavement versus a treadmill.I received a Nike+iPod pedometer from my brother in December and have been using it to collect data for my runs. It’s proven to be fairly inaccurate depending on how I’ve calibrated it… if calibrated for the treadmill, it tracks about 10% low for subsequent runs and closer to 15-20% on pavement. If calibrated on pavement, the treadmill runs track about 15% too high. Regardless, it has given me a fun way to motivate me to get back into running. The graph above shows my progress for the past 3 months. I’m looking forward to watching the bars rise in the coming months.