Get ready for a scorching Pacific Crest Weekend Sports Festival. The annual Sunriver multisport carnival, now in its 19th year, begins with the Tour de Crest bike ride on Friday and concludes with the Olympic triathlon and duathlon on Sunday, and all three days of competition could be affected by extreme heat.

According to the National Weather Service, temperatures at Sunriver could reach 98 degrees on Friday and Saturday and 92 degrees on Sunday, and there will be a slight chance of thunderstorms throughout the weekend. The forecast prompted organizers at Why Racing Events to move up the start of the long course triathlon and duathlon from 9 a.m. to 8 a.m. on Saturday in an attempt to spare competitors from the worst of the midday heat.

As of Wednesday evening, no other Pacific Crest events have been rescheduled due to weather.

The Tour de Crest 26- and 55-mile rides begin at 7:30 a.m. Friday at the “Athletes Village” (as the Sunriver Village is called for the weekend), and the Splash Pedal n’ Dash for kids will begin at the Sunriver Homeowners Aquatic & Recreation Center (SHARC) at 4 p.m.

Saturday’s events begin with the marathon at 7:30 a.m., followed by the half marathon at 8 a.m., the same time as the long course triathlon. Both the marathon and half marathon begin at the Athlete Village, and the triathlon and duathlon begin at Gull Point on Wickiup Reservoir (buses are available to transport competitors and spectators from Sunriver to the lake, but seats must be reserved ahead of time at aasportsltd.com for $25).

The Kids Dash, 5K and 10K run/walk and Olympic triathlon and duathlon are all scheduled to go off between 8 and 9:15 a.m. on Sunday. The Olympic triathlon and duathlon also begin at Gull Point, while all other Sunday events begin at Sunriver Village.

Not scared off by the heat? Registration is still open online at regtorace.com.