Garmin has a cool compare run feature in the Garmin Training Center software. The red and blue graphs are from Tuesday and Thursday of this week. Is it normal to be this consistent? The only differences were how long the stoplights were. I had a 6 miler on Wednesday so my legs were on fire and I was panting like I had the too much macaroni sweats. I'm surprised the lines match up so well when they felt so different.