F1 racing under the lights in Singapore (LAT photo)

 Category                                                Track                         Running Time                                  Network


 Friday, Sept. 21, all times Eastern

 F1 World Championship
 practice
 Singapore

 9:30am-11:00am (L) 

 NASCAR Sprint Cup Series
  practice
 New Hampshire

 12:00pm-1:30pm (L)
 

 NASCAR Camping World
 Truck Series race
 Kentucky

 7:00pm-10:00pm (L) 

 NASCAR Sprint Cup Series
  qualifying
 New Hampshire

 10:00pm-11:30pm (D)
 

 Saturday, Sept. 22, all times Eastern

 F1 World Championship
  qualifying
 Singapore

 9:00am-10:30am (L)
 

 NASCAR Sprint Cup Series
 practice
 New Hampshire

 11:00am-12:00pm (L)

 NASCAR Nationwide Series
  race
 Kentucky

 3:30pm-7:00pm (L)

ESPN
 NHRA Full Throttle Drag Racing
 Series qualifying 
 Dallas

 10:30pm-12:00am (D) 

ESPN 2

 Sunday, Sept. 23, all times Eastern

 GP2 Series 
 Singapore

 6:00am-7:30am 

 F1 World Championship
  Singapore Grand Prix
 Singapore

 7:30am-10:00am (L)


 NASCAR Sprint Cup Series
  race
 New Hampshire

 1:00pm-2:00pm (L) pre-race
 2:00pm-5:30pm (L) race

ESPN
 V8 Supercars
 Sandown

 1:00pm-3:00pm

 NHRA Lucas Oil Drag Racing   
 Charlotte

 2:00pm-3:00pm

ESPN 2
 Lucas Oil Off Road Racing
 San Bernadino

 3:00pm-4:00pm
  Pro4 and Superlite races

 NHRA Full Throttle Drag Racing
 Series eliminations 
 Dallas

 8:30pm-11:30pm (D) 

ESPN 2
 FIA World Touring Car
 Championship
 Sonoma

 10:00pm-12:00am (D)
  Today's U.S. debut races