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Located on what was once the populated part of Contra Costa County, Black Diamond Mines and Contra Loma Regional Parks offer great trail running, panoramic vistas and a chance to see what much of local area was like in centuries past.
When: September
(This trail race takes place in September each year. Visit race website link below for details.)
Location: California, United States
Nearby City: Anticoh
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Event 1:
Race Length: 13.1 miles (21.1 km)
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Event 2:
Race Length: 10 km (6.2 mi)
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Event 3:
Race Length: 5 km (3.1 mi)
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