His exhibition culminates in an all-day outdoor performance event on the winter solstice, December 21, in the MCA's sculpture garden. For Untitled Performance (Winter Solstice 2005), Shellabarger plans to begin pacing on a north-south axis across the MCA sculpture garden beginning at sunrise at 7:15 am until 11:49 am. His walk changes with the sun's transit to an east-west path until sunset at 4:23 pm. The finished work of the two paths will form an immense "x" figure that will remain in the garden as it naturally fades away. This performance concludes his prior work from the summer solstice, June 21, performed at Humboldt Park.
These walking performances parallel physical endurance with the celestial journey of the sun as it travels across the sky. In these works, Shellabarger repeats seemingly mundane activities to the limits of his endurance. Since breathing and walking are nearly universal activities, audiences generally have a strong visceral reaction to his performance work.