A review of the length of the course of last weekend’s Sunburst marathon confirmed what many participants suspected. Discrepencies between signage on the course and participants’ GPS devices led to double-checking the measurements. Beacon Health System spokeswoman Heidi Prescott told the South Bend Tribune that runners ran about point 3-8 of a mile too long between miles 10 and 11. She says the error occurred because of miscommunication between the race organizers and the group certifying the race distance. There were about 17 hundred registered participants in the Sunburst races Saturday, many of whom realized there was a problem with the course when their own GPS devices gave them distances greater than the 13.1 mile half-marathon or 26.2 full marathon when they crossed the finish line.