Shorter LSD today

Shorter LSD today, took it indoors at home for a 23K Run. 22K at a 5:30 pace then a 1K cool down. I wanted to go further but I am Skiing this evening so I cut it short. Also contributing to the shorter run was getting a cold chest. Had the Fan on , shirtless and 18C. By the time I hit 22K I was getting that cold chest hard to get enough O2 feeling.... got to keep it warm! I am off the next few days so I was thinking of repeating today's run tomorrow , rest Saturday then a 30+K LSD on Sunday. After Sunday it will be shorter faster runs in prep for the Refrigerator Feb 21.