Complex sentence: The Marathon Run For Peace was an extension of an older December event, the Run For Peace 10 Miler, and used a point-to-point route that started in Davidson, North Carolina, and ended in Charlotte.
Split into simpler sentences: The Marathon Run For Peace was an extension of an older December event, the Run For Peace 10 Miler. The race course differed from the traditional course in that it was now a point-to-point course that originated in Davidson, North Carolina, and ended in Charlotte.