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

Lies between Calico South Ridge and Red Book Point, provides connection between Second Pull-Out (2PO) parking on the Red Rock Scenic Loop drive from northwest to southeast to Assisi Rd or Red Springs parking in Calico Basin. <h2>Details</h2> East access by Calico Basin: <ul> <li>from Assisi Rd parking (N36.1495 W115.4199)&#160;: Hike WNW about +190&#160;m uphill over 1.2&#160;km distance, at first on rough gravel road, gets much steeper with some scrambing sections near the end.</li> <li>from Red Springs parking (N36.1466 W115.4186)&#160;: Hike NW about +200&#160;m uphill over 1.35&#160;km distance, gets much steeper with some scrambling sections near the end.</li> </ul> West access by Scenic Loop road: <ul> <li>from Second Pull-Out (2PO) parking - - > See instructions for &#8220;Location&#8221; of the Red Book Point - Walrus Gully route on MountainProject.</li> </ul> (Sometimes called &#8220;South Pass&#8221; or &#8220;Guardian Angel&#8221;) (See &#8220;so&#8221; on the MP map