A website for USA with detailed information somewhat like c2c for Europe is MountainProject.org California has a detailed overview page here on c2c. There are some French-language route descriptions and reports. New York state has an the Gunks on c2c.

United States

Camptocamp

Located between Calico Peak and Tank Peak, provides connection between Sandstone Quarry parking on the Red Rock Scenic Loop drive, from northwest to southeast to Sandstone Drive parking in Calico Basin. <h2>Details</h2> NorthWest access by Scenic Loop road is quickest: <ul> <li>approach from Sandstone Quarry parking (N36.1622 W115.4503) using the Calico Tanks trail.</li> </ul> SouthEast access by Calico Basin: <ul> <li>approach from Sandstone Rd or Assisi Rd parking to the Middle Sand Flat (N36.1577 W115.4354), then scramble up from there - [[see Photo of S side of pass]https://www.mountainproject.com/v/112498671 ]</li> </ul> (See &#8220;ct&#8221; on the MP map [[photo1]https://www.mountainproject.com/v/112498678 | [photo2]https://www.mountainproject.com/v/112498671 ] .