L-31w is a hiking, biking, and horse trail in Miami-Dade County, Florida. It is 10.8 miles long and begins at 6 feet altitude. Traveling the entire trail is 10.8 miles with a total elevation gain of 3 feet. The S-175 culvert can be seen along the trail. The trail ends near the S-332, and S-332D pumps, L-31N and another dike, and the S-174 spillway.
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