If racing through ancient mountain trails, misty jungles, and hill tribe villages in northern Thailand has been on your bucket list, now’s your chance! Entries for the Chiang Mai by UTMB® 2025 are now officially open for runners with a UTMB Index — and general entries open this Sunday, 22 June.
Chiang Mai by UTMB® is one of Asia’s most exciting and scenic ultra-trail events, and the 2025 edition promises two epic weeks of trail running, cultural immersion, and unforgettable experiences.
📅 Race Dates & Locations
Chiang Mai by UTMB® is split across two packed weekends, each with its own race hub and unique routes:
Week 1: Inthanon Block
📍 Location: Doi Inthanon National Park Office
🗓 Dates: 29–30 November 2025
🗺 Map: Google Maps Link
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✦ INTHANON 50 – 4 UTMB Stones
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✦ INTHANON 20 – 2 UTMB Stones
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✦ Warm Up Run (Inthanon)
Expect cool mountain air, technical trails, waterfalls, and views from Thailand’s highest peak – Doi Inthanon.
Week 2: Chiang Mai Block
📍 Location: Chiang Mai PAO Park
🗓 Dates: 4–7 December 2025
🗺 Map: bit.ly/cm_pao
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✦ CHIANG DAO 160 – 8 UTMB Stones
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✦ ELEPHANT 100 – 6 UTMB Stones
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✦ HMONG 50 (Day/Night options) – 4 UTMB Stones
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✦ SUTHEP 20 (Day/Night options) – 2 UTMB Stones
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✦ CHEDI 20 – 2 UTMB Stones
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✦ Warm Up Run (PAO Park)
From temple trails to starlit summits, this weekend offers distances for all runners in a festive, trail-loving atmosphere.
🔓 Entry Details
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✅ Early Access: Runners with a valid UTMB Index can enter now via the official site: chiangmai.utmb.world/races
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🌐 General Entries Open: Sunday, 22 June 2025
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💸 New This Year: Optional Cancellation Guarantee Insurance – priced at 10% of your entry fee. Full details and terms here (PDF)
🌏 Join the Everyday Athlete Thailand by UTMB® 2025 Tour
Make your race experience stress-free and unforgettable by joining our Thailand by UTMB® 2025 Tour. We take care of the logistics so you can focus on your training, racing, and recovery — while exploring the beauty and culture of northern Thailand.
Our travel package includes:
✅ Return airport transfers
✅ Accommodation near race venues
✅ Daily breakfast
✅ Guided shakeout runs
✅ Local experiences and excursions
✅ On-the-ground support from our South African tour leader
✅ Group meet-ups, pre-race strategy sessions, and post-race celebrations
✅ Optional race registration assistance
📍 Limited spots available! Secure your place here:
👉 everydayathlete.co.za/thailandbyutmb
🏃♂️ Ready to Run?
Visit chiangmai.utmb.world to choose your race and enter now if you have a UTMB Index. General entries open on 22 June — don’t miss out!
Let the adventure begin. 🏔🇹🇭
Need help with your entry or travel plans? We’ve got you. Contact us anytime or head to everydayathlete.co.za/thailandbyutmb for full details.