You can find Darren at these events during the 2018 season:

Pirelli World Championship 2018 Schedule

MAR 9-11Streets of St. Petersburg St.
MAR 23-25Circuit of The Americas (COTA)
APR 13-15 Streets of Long Beach
APR 27-29VIRginia International Raceway
MAY 18-20Canadian Tire Motorsport
MAY 25-26, 28Lime Rock Park
JUN 22-24Road America Elkhart Lake
JUL 13-15Portland International Raceway
AUG 10-12Utah Motorsports Campus
AUG 31 – SEP 2Watkins Glen International
OCTOBER 26-28 Laguna Seca - SRO Intercontinental GT Challenge

Pirelli Drivers Cup and Porsche Club of America 2018 Schedule

Feb 2-4Sebring PCA
March 23-25Las Vegas PDC
April 6-8Road America PDC
May 4-6Utah PDC
June 1-3Watkins Glen PCA
June 8-10Thunderhill PDC
July 6-8COTA PDC
August 24-26Sonoma PDC
September (TBD)PDC
September 27-30Laguna Seca RennSport PCA
October 19-21Utah PDC