Complex sentence: The present race distance also dates back to 2001-it had been 1 mile 3 furlongs (2,213 metres) since 1994, before which it was 1 mile 4 furlongs (2,414 metres).
Split into simpler sentences: The present race distance also dates back to 2001. Previously it had been 1 mile and 3 furlongs (2,213 metres) since 1994, before which it was 1 mile and 4 furlongs (2,414 metres).