Grundy County Highway C26 runs east-west in Northwestern Grundy County. This along Marseilles Road from a intersection with U.S. Rt. 6 to the La Salle/Grundy County Line. GCH C26 does not pass through any towns in Grundy County. GCH C26 passes through the following townships in Grundy County. Erienna Nettle Creek GCH C26 intersects the following highways in Grundy County. U.S. Rt. 6, near Morris. Grundy County Highway T61, near Stravanger.
A street sign along GCH C26. EB GCH C26 at the La Salle/Grundy County Line. EB GCH C26 at U.S. Rt. 6.
