Really nice day to run with Matt and Tom. Beautiful day, beautiful course, conversational pace, first run using GPS on new FR 235. The HR numbers were pretty screwy, so I'm not sure what to think of that. It worked well enough on the treadmill yesterday. Maybe clothing/weather/tightness of watchband, etc. were all possible factors. My HR should have been (paced on pace and effort level) about 130-135.