Illinois Open Series

Established 2003

illinoisopenseries.com

Home courses (5)

Lemon Lake County Park Crown Point, IN Eagle Ridge / Civic Center Oswego, IL Anna Page Park Rockford, IL Fairfield Park Round Lake, IL Sinnissippi Park Sterling, IL

Tournaments

Jun 13 Sat
IOS #139 Sinnissippi Open in cooperation with Rock River Disc Golf (MPO/MA2/MA4/FA2/FA4/MA40) PDGA B-tier · Sat, Jun 13, 2026 Sinnissippi ParkSterling, IL 12 / 922
B-tier
Jun 14 Sun
IOS #139 Sinnissippi Open in cooperation with Rock River Disc Golf (All Others) PDGA B-tier · Sun, Jun 14, 2026 Sinnissippi ParkSterling, IL 14 / 922
B-tier
Jul 10-12 Fri-Sun
IOS #140 Forsyth Open presented by Discraft PDGA A-tier · Fri-Sun, Jul 10-12, 2026 Forsyth ParkForsyth, IL 29 / 1683
A-tier
Aug 15 Sat
IOS #141 Oswego Open (MPO/MA2/MA4/FA2/FA4/MA40) PDGA C/B-tier · Sat, Aug 15, 2026 Eagle Ridge / Civic CenterOswego, IL 9 / 1052
C/B-tier
Aug 16 Sun
IOS #141 Oswego Open (All Others) PDGA C/B-tier · Sun, Aug 16, 2026 Eagle Ridge / Civic CenterOswego, IL 11 / 1052
C/B-tier
Sep 12 Sat
IOS #142 Northwood Open - MPO/MA2/MA4/FA2/FA4/MA40 PDGA B-tier · Sat, Sep 12, 2026 Northwood ParkMorton, IL 1 / 902
B-tier
More tournaments ›

Leagues

No current leagues listed.

About

Staff Contact ›

Scott Pitner Tournament Director Emeritus
Mike Krupicka Tour Director
Nate Heinold Tournament & Merchandise Director