Why Kill Bill? The tough ascent to Oyster Dome originally was referred to by local ultra runners as Kill Bill Hill, not only a reference to its unforgiving climb, but also tribute to a local ultra runner Bill Ball who used the rocky, root layered climb as a course route for Mount Blanchard Ultra.

Upcoming Races

Jul 13 2019
50 KM
Two 25k loops
Multiple Loop Course
Very hilly, ~7500-12,500 feet in 50 miles
Some rocks, root, and/or ruts


Date Distance Total Finishers Top Result Top Result (F)
07/14/18 50 KM 17 4:50:47 7:08:18
07/15/17 50 KM 12 5:45:35 5:31:07
07/16/16 50 KM 18 5:09:57 7:53:47
11/14/15 50 KM 20 5:09:57 5:59:11
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information.
Earth Day 50K
  • Apr 20, 2019
  • Crystal Lake, IL
50 KM