The JPMorgan Chase Corporate Challenge, scheduled for tonight at 7 p.m. in Grant Park, has been cancelled due to the ongoing heat wave.

The City of Chicago has issued an excessive heat warning and is encouraging people to stay away from unnecessary outdoor activities. WBBM-TV has forecasted a late afternoon heat index of 105 with potentially dangerous thundershowers at race time.

As for rescheduling the race, Catherine Regina, the registration coordinator for the race told Chicago's Amateur Athlete, " We don't know for sure. Rescheduling the race is dependent upon making arrangements with the city for another date. A decision will probably be made next week and will be posted on www.jpmorganchasecc.com."

Company teams that had entered the JPMorgan Chase Corporate Challenge can pickup their t-shirts today at Grant Park between the hours of 12-8 p.m. T-shirts can also be picked up after the event by bringing in your race number to Lakeshore Athletic Services at 4508North Milwaukee Avenue in Chicago.

All of the company tent orders are set up. While there is no race, your company is still welcome to get together at your tent.

The JPMorgan Chase Corporate Challenge will increase its donation to the event beneficiary, the Golden Apple Foundation, due to the cancellation.

For those teams who hoped to qualify for the JPMorgan Chase Corporate Challenge Championships in New York on October 6, there will be more information forthcoming at www.jpmorganchasecc.com and also by calling Lakeshore AthleticServices at (773) 777-9000.