Rancho Mirage resident Lynette Lim will swim her first race in the London Olympic Games in the wee hours Sunday.

The 2010 Palm Springs High graduate who is entering her junior year at USC is swimming for Singapore in two events. She holds dual citizenship.

This is her second Olympics.

Lim, 20, swims the 400-meter freestyle July 29 at 3:33 a.m. Pacific Time and on Aug. 2, she competes in the 800-meter  at 2 a.m.

The time difference in London is eight hours from California.

Swims are recorded in heats and Lim’s time is approximate. The top eight times advance to finals later that day.

Her high school coach says the desert will be watching her trek online.

“This is very exciting and great for swimming here in the valley,’’ said Palm Springs High School coach Shawn Drennan. “You hear young kids talk about it all the time.  They strive for her times and all the records she still holds at Palm Springs and the DVL league meet.”

Lim’s personal best times are 4:11.24 (400) and 8:35.41 (800).

Lim is also part of a large contingent of USC Trojans in these Olympic Games.

There are 12 USC swimmers, 12 track and field athletes, 10 in water polo, two in volleyball, two in beach volleyball and one in soccer. The group of 16 men and 23 women represent 18 different countries.