JBS is a short-but-technical 90% single-track loop trail that starts/ends on the south side of Yates Lake/Tallapoosa River and is maintained by CRATA (https://crata.org/yates-lake/). Blazed both directions but often run/hiked clockwise JBS begins on a mix of rooty/muddy single track and jeep road ascending ~100ft during the first 1/2 mile before descending to the lake's edge and winding creek-side through old-growth forest.
Shark Valley is a geological depression at the head of the Shark River Slough in far western Miami-Dade County, Florida, United States. It is currently part of Everglades National Park. Shark Valley empties into Shark River in the Ten Thousand Islands of Monroe County. Shark Valley characteristically includes sawgrass prairie that floods during the rainy season, hence the name "river of grass"—Pa-Hay-Okee, from the Mikasuki language—for such marshes in the Everglades.
Subida al Mulhacén desde la barrera de la Hoya del Portillo. Ruta por Puerto Molina, Alto del Chorrillo y Mulhacén II.
Kill 'Em Quick is a trail in San Gabriel Mountains near Sunland-Tujunga with a rich history. The trail was cut by detainees housed at a juvenile probation camp. The camp is now abandoned but there is evidence that time trials of this trail were tracked by those who were there. The trail is difficult with over 1000 feet gain in less than a mile. See the below video that gives a great overview of Kill 'Em Quick: