At 15km bike path (rail trail) in Suffolk County, NY.

https://www.traillink.com/trail/epcal-alternative-transportation-path/

Vertical Kilometer route up to George Peak. Start at top of Abour rd, Heatherlands, George, South Africa
This route ascends 1000m in 4km

This FKT entails summiting 6 peaks in the Witfontein Nature Reserve, near George, South Africa, and moving on foot between the various peaks from the start to the finish.

• Vensterberg - 1247m
• Losberg - 813m
• Cradock Peak - 1532m
• George Peak - 1276m
• Tierkop - 766m
• Groenkop - 606m

Distance: 42-50km - Elevation gain 3900m

https://www.facebook.com/George6PeaksFKT

Falls Lake Recreation Area

This is a 7 mile mountain bike trail.  https://www.ncparks.gov/falls-lake-state-recreation-area/trail/mountain-bike-trail-%E2%80%93-south-loop

A single-track loop blazed with blue circles and also has 38 distance markers 400, 401,402,…,438 along the entire path. The trail is very hilly with a few flat sections.

The Abbey Line Trail takes the scenic route between Watford Junction Station and St Albans Abbey Station, or either end of the Abbey Line railway route. The route also links to stations in between. The Trail is way-marked and places on the route between Watford and St Albans include Meriden, Colney Street, Frogmore and Park Street. About 9 miles one-way.