Notes
Did 4 3 minute intervals @ 5k pace...which felt really tough. Lungs complaining and the warmer temps are making the snow on the ground into a fog machine. Cool, damp air made breathing sort of rough.
Right arch also really sore...almost crampy. Not sure if it's new shoes or just random annoyance. Will keep an eye on things. Definitely slowed me down and had me considering stopping @ 11 miles.