The most commonly used route ascends Haleakala (Maui) from the beach near Kaupo via the Kaupo and Sliding Sands trails. It's about 20 miles each way, and ascends 10,023 feet.

The most commonly used sea-to-summit road climb (popular with cyclists) seems to be from Paia and is described here: https://mauisunriders.com/maui-bike-routes-sea-to-summit-climbing-haleakala-expert/

J Douglas Armstrong described this route:

Wendall Lorenzen posted the route:

Tribal Closures (update July 2022):

When circumnavigating Mt. Adams it is critical to do thorough research on the Yakama Nation Website to check for land closures and to obtain their permit and/or permission before attempting this route.  If the land is closed no one should be on it; we have Flagged prior efforts who were on the tribal land during a time of closure. The tribal land may be closed even when the rest of Mt Adams Wilderness is open.