Jim Walmsley, Mathieu Blanchard will return to UTMB in 2024

Canada’s Christian Meier and Marianne Hogan are also on the start list

Courtney Dauwalter and Jim Walmsley win 2023 Trail Runner of the Year

The two American runners were also the champions of Ultra-Trail du Mont Blanc (UTMB)

Hardrock champ repeats at Reunion Island 100-miler

The race, which involves 10,000m of climbing, started at 9 p.m. Thursday local time