More Info in the 2023 World Mountain & Trail Running Championships in Austria

ATRA has all the info, including dates, locations, and detailed maps of the various courses.

They also published qualifying requirements for US athletes wanting to compete.

Here are the US qualifiers

For the Vertical Race:

• Sunapee Scramble in Sunapee, NH (April 29).

For the Short Trail:

• Fourmidable 50K in Auburn, CA (February 18) and Breakneck Point Trail Marathon in Beacon, NY (May 6)

For the Long Trail:

•  Lake Sonoma 50 Mile in Lake Sonoma, California (April 8)

For the Classic Up/Down Mountain :

• Sunapee Scramble in Sunapee, NH (April 29).

There’s more detail and nuance on the selection process at the link.