Pre enter and save yourself some $$
Pre enter online at motorsportsreg: https://www.motorsportreg.com/events/ces-2019-races-3-4-blackhawk-farms-raceway-championship-enduro-series-860620
Or go oldschool and send in a printed form:
2019_Blackhawk 1_ Sun_Pre_Entry Form.pdf (107.6 KB)
2019_Blackhawk 1_ Sat_Pre_Entry Form.pdf (107.7 KB)