Races
HOKA Chiang Mai Thailand by UTMB Chiang Dao 160
Chiang Mai to Chiang Dao. One hundred sixty kilometers through northern Thailand ridges, temples, and tropical night miles.
107 mi+32,152 ft32,152 ft48 hours1,532 ft to 3,481 fttech 5/106 stationsChiang Daotropical nightWSER qualifierDecember
Distance107 mi
Gain+32,152 ft
Loss32,152 ft
Altitude1,532 ft to 3,481 ft
Technicality5/10
Air55°F to 85°F
- Start3,481 ft
- High3,481 ft
- Low1,532 ft
- Finish1,532 ft
- Chiang Mai at mile 0.0
- Thailand at mile 20, cutoff 9.600000000000001 hours
- HOKA Chiang Mai Thailand by UTMB Chiang Dao 160 mile 41 at mile 41, cutoff 19.200000000000003 hours
- HOKA Chiang Mai Thailand by UTMB Chiang Dao 160 mile 61 at mile 61, cutoff 28.799999999999997 hours
- HOKA Chiang Mai Thailand by UTMB Chiang Dao 160 mile 82 at mile 82, cutoff 38.400000000000006 hours
- Finish Chiang Dao at mile 102, cutoff 48 hours
Geometrycourse math
Steepest drop1,722 ft-15.2% over 2.1 mi
Night miles44 misunset near 18:00 local
Weather at the cruxcourse math
At hour 1 of race, feels like 28 C (82 F).Sample of 7 race days, medium confidence.At hour 1 of race, apparent temperature P90 is 28 C / 82 F.
The cruxChiang Dao mountain section on the second night with humidity and sleep debt (near mile 65)
Course DNA
The Course
HOKA Chiang Mai Thailand by UTMB Chiang Dao 160 runs 173 km through Chiang Mai, Thailand. Surfaces skew 70% trail / 25% dirt road / 5% paved. Chiang Dao mountain section on the second night with humidity and sleep debt. High point near 3,481 ft. Low near 1,532 ft. December temps run 55°F to 85°F. The course rewards patience early and punishes rushed descents after mile 50.
The Work
Train for the climbing across 173 km. Back-to-back long runs on trail. Practice power-hiking grades above 15 percent. 48 hours total means limited margin: rehearse fueling every 45 to 60 minutes and downhill eccentric work weekly. Technicality 5/10. Build a block that simulates the crux near mile 65.
Kit
December in Chiang Mai, Thailand: plan for 55°F to 85°F. Mandatory shell if rain is in forecast. Headlamp with spare batteries if 48 hours pushes past dark. Poles help on sustained climbs above mile 25. Vest capacity for 2 liters minimum. Shoes matched to 70% trail: lugs for mud, rock plate if the course turns technical after mile 50.
Race Day
Hold effort through mile 25. The field often splits on the first big climb after mile 50. Chiang Dao mountain section on the second night with humidity and sleep debt near mile 65 is where time is won or lost. Walk the steep pinches. Run the flats and gentle downhills. Crew at major aids: socks, calories, ice if hot. Transitions under 5 minutes when possible. Final third is 33 miles of fatigue management. Finish with reserve for the last descent.
Results
HOKA Chiang Mai Thailand by UTMB Chiang Dao 160 finish lines.
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