From Monday to Friday, Iggy runs a total of 3 + 4 + 6 + 8 + 3 = <<3+4+6+8+3=24>>24 miles
Iggy runs for a total of 24 * 10 = <<24*10=240>>240 minutes
Since there are 60 minutes in an hour, Iggy runs for a total of 240 / 60 = <<240/60=4>>4 hours
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