The 47th Bank of America Chicago Marathon kicks off Sunday with a record 53,000 plus runners headed to the starting line in Grant Park, a favorable weather forecast of mostly clear skies with temperatures peaking in the early 70s — and assurances from federal immigration enforcement authorities that operations would not impact the race.

“ICE does not conduct operations at sensitive locations, such as public events, unless there are exigent circumstances,” a statement emailed to the Sun-Times Monday from U.S. Immigration and Customs Enforcement read.

The response came after the Sun-Times asked about concerns that ICE operations, or an impending deployment of National Guard troops, could impact the marathon.

A marathon spokeswoman acknowledged this week that race organizers had spent time

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