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Elephant 100 - Course Data, Elevation and Cutoffs
- Mae Taeng, Thailand
- 100 km62.1 mi
- 5,500 m18,045 ft D+
- 8 aid stations
- 6 Running Stones - Major
Map, profile and checkpoints Map · checkpoints · forecast opens Nov 25 Race-day forecast is live
Race-day conditions
Weather and daylight along the course and at all 10 checkpoints, set to the 08:00 start.
- Start
- 08:00
- Daylight at the start
- 06:43-17:46
- Aid stations
- 8
- Distance
- 100 km62.1 miFinishes 45 m lower than it startsFinishes 148 ft lower than it starts
- Elevation
- +5,500 m+18,045 ft-5,545 m-18,192 ftAbout 55 m of climb per kmAbout 290 ft of climb per mile
Next editionFri 4 Dec 2026 · 08:00
- Start
- Winner~9h159h15 after the start
- Sunset9h47 after the start
- Median finisher2025 median22h03 after the start
- Sunrise22h44 after the start
- Cutoff28h after the start
A median finisher runs 12h16 in the dark.
Elephant 100 is the 100 km race of Chiang Mai Thailand by UTMB, with around 5,500 m of elevation gain from Wat Nhong Bua Noi in the Mae Taeng valley to Chiang Mai PAO Park. The overall cutoff is 28 hours, and it counts as a 100K in the UTMB Index.
Elephant 100 joins the Chiang Dao 160 course at Wat Phraphutthabat Si Roi, about 20 km in, and shares everything from there to the finish - so it is the same terrain over a distance most runners can cover in a single night out. Around 55 m of climbing per kilometre, nothing higher than about 1,550 m, and no climb much over 800 m: the difficulty is the humidity and the relentlessness rather than any one ascent. The course runs past Wat Phraphutthabat Si Roi and Mae Sa Elephant Camp before the final climbs into Doi Suthep-Pui National Park and the descent past Montha Than Waterfall. The checkpoint table below lists the eight aid stations common to both years, at the organiser's own 2025 distances; the course then changes after A15 Wat Doi Pui (76.3 km), which is where the extra four kilometres sit. The organiser has not published 2026 time barriers yet.
Data is approximate and courses change between editions - always verify against the official race guide.
Other distances at Chiang Mai Thailand by UTMB
| Race | Distance | D+ | Cutoff | Next start |
|---|---|---|---|---|
| Chiang Dao 160 | 173 km107.5 mi | 9,800 m32,152 ft | 48h00 | Dec 4, 2026 |
| Elephant 100 (this page) | 100 km62.1 mi | 5,500 m18,045 ft | 28h00 | Dec 4, 2026 |
Estimate your finish
One Strava connection reads your last 90 days and estimates your finish on this course. Free, no plan needed.
Course math
Four numbers worked out from this course's distance, elevation and checkpoints.
TrailMath effort-km
183 effort-km
About 22 h for a mid-pack finisher (index 500). Not a pacing guarantee.
Distance + gain ÷ 100 + loss ÷ 200, beside ITRA's gain-only km-effort. Model TM1.0.
How TrailMath works →UTMB Index category
100K
155 km-effort (distance + gain ÷ 100). Calculated from the course figures, not an official classification.
Estimate your UTMB Index → ITRA and UTMB indexes explainedBiggest climb section
+826 m+2,710 ft
A18 Wat Ban Iak → A9 Wat Phraphutthabat Si Roi · km 9.1–20.3mi 5.7–12.6
The largest gain between two checkpoints, not one continuous climb.
Biggest descent section
−1,828 m−5,997 ft
A15 Wat Doi Pui → Chiang Mai PAO Park (Finish) · km 76.3–100mi 47.4–62.1
The largest loss between two checkpoints. ITRA's km-effort ignores descent; TrailMath counts it: 183 km-effort.
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Chiang Mai Thailand by UTMB - Elephant 100 · 2025
Finish times, 2025 edition
1,078 runners started. 974 came back. Half of them took longer than 22:03:02.That left the median finisher 5:56:58 inside the 28h cutoff.
Median finish
22:03:02
Half of the 974 finishers were still out there at this point.
5:56:58in hand before the 28h cutoff
Average 21:14:11, 0:48:51 quicker than the median: a fast front pulls it down.
The start line
90.4%
974 of 1,078 starters made it; 104 did not.
still moving when a cutoff closed
stopped by choice or by the medics
Men and women
Two medians on the same scale. The bars run from the start to the cutoff, so the gap between them is the gap in time.
Men
21:55:34
median finish; average 21:08:14
767 finishers, 79% of the field
Women
22:39:00
median finish; average 21:36:13
207 finishers, 21% of the field
0:43:26 separates the two medians, across 767 men and 207 women.
Finish time by age group
Every track runs from the start to the 28h cutoff, so the empty part of a bar is the time that group's median finisher still had. Men and women are drawn on the same scale.
| Age | Median finish | Median against the cutoff | Finishers |
|---|---|---|---|
| 20-34 | 19:56:51 | 180 | |
| 35-39 | 20:00:21 | 145 | |
| 40-44 | 21:56:39 | 146 | |
| 45-49 | 22:04:29 | 131 | |
| 50-54 | 23:14:45 | 81 | |
| 55-59 | 22:53:18 | 53 | |
| 60-64 | 23:41:25 | 20 | |
| 65-69 | 22:56:46 | 11 - small sample, read with care |
| Age | Median finish | Median against the cutoff | Finishers |
|---|---|---|---|
| 20-34 | 23:15:35 | 52 | |
| 35-39 | 18:36:50 | 33 | |
| 40-44 | 23:23:29 | 36 | |
| 45-49 | 23:42:50 | 41 | |
| 50-54 | 21:25:28 | 23 | |
| 55-59 | 22:22:18 | 15 - small sample, read with care | |
| 60-64 | 19:34:16 | 6 - small sample, read with care | |
| 65-69 | - | 1 - too few finishers to publish a time |
Full bar: 20 finishers or more. Tick alone: fewer than 20, too few for a median to say much. The shaded row is the biggest group.
Where the finishers came from
17% of the finishers came from Thailand alone.
| Nation | Finishers | Share |
|---|---|---|
| ThailandTH | 16817.2% | |
| ChinaCN | 16116.5% | |
| JapanJP | 11611.9% | |
| Hong Kong SAR ChinaHK | 747.6% | |
| South KoreaKR | 697.1% | |
| VietnamVN | 656.7% | |
| MalaysiaMY | 474.8% | |
| FranceFR | 414.2% | |
| IndonesiaID | 323.3% | |
| TaiwanTW | 262.7% | |
| CuraçaoAN | 171.7% | |
| SingaporeSG | 171.7% | |
| PhilippinesPH | 141.4% | |
| United KingdomGB | 131.3% | |
| United StatesUS | 121.2% | |
| AustraliaAU | 111.1% | |
| Saudi ArabiaSA | 101.0% | |
| TürkiyeTR | 80.8% | |
| GermanyDE | 70.7% | |
| PolandPL | 70.7% | |
| IranIR | 50.5% | |
| SpainES | 40.4% | |
| IndiaIN | 40.4% | |
| CanadaCA | 30.3% | |
| KazakhstanKZ | 30.3% | |
| PakistanPK | 30.3% | |
| BangladeshBD | 20.2% | |
| BelgiumBE | 20.2% | |
| CzechiaCZ | 20.2% | |
| LaosLA | 20.2% | |
| NetherlandsNL | 20.2% | |
| NepalNP | 20.2% | |
| RomaniaRO | 20.2% | |
| SwedenSE | 20.2% | |
| ArmeniaAM | 10.1% | |
| AustriaAT | 10.1% | |
| BahrainBH | 10.1% | |
| BrazilBR | 10.1% | |
| BhutanBT | 10.1% | |
| FinlandFI | 10.1% | |
| HungaryHU | 10.1% | |
| ItalyIT | 10.1% | |
| CambodiaKH | 10.1% | |
| North KoreaKP | 10.1% | |
| Myanmar (Burma)MM | 10.1% | |
| MongoliaMN | 10.1% | |
| Macao SAR ChinaMO | 10.1% | |
| NorwayNO | 10.1% | |
| New ZealandNZ | 10.1% | |
| OmanOM | 10.1% | |
| PortugalPT | 10.1% | |
| RwandaRW | 10.1% | |
| TunisiaTN | 10.1% | |
| VanuatuVU | 10.1% | |
| South AfricaZA | 10.1% | |
| 45 other nations35 other nations25 other nations15 other nations5 other nations | 17518.0%596.1%293.0%151.5%50.5% |
Showing 20 of 55 nations.Showing 30 of 55 nations.Showing 40 of 55 nations.Showing 50 of 55 nations.Showing 55 of 55 nations.
Bar length is against the largest nation. The smallest counts are drawn at a minimum visible width, so their bars are not to scale.
How these numbers were computed
These are times for runners who finished. They exclude everyone who started and did not, so they describe how long finishing took, not how long the race takes. Bands with only a handful of finishers move a lot from one edition to the next.
We plot the median, not the average. A handful of very quick runners drags the average well below the time half the field actually beat, so the median is the honest number to plan against.
Nationality here shows who travels to this race, not who runs it best. That alone is why a host nation tops almost every list.
Computed from the full official results, verifiedSeptember 13, 2026 - Official results
Ask the course
Ask Elephant 100 anything about climbs, pacing, crew or cutoffs.
Answers come from this course's data, your plan and your training.
Which climb should I respect most?
A18 Wat Ban Iak to A9 Wat Phraphutthabat Si Roi: +826 m over 11.2 km, from km 9.1. Hike the steep sections at an effort you could hold for hours - the race is decided after this climb, not on it.
Is 22h a realistic finish for me?
22h would put you in the faster half of 2025 finishers - the median was 22:03:02. It means holding 13:12/km overall.
The assistant answers that once it can see your training.
Build your Elephant 100 plan and your question is the first thing waiting in the TrailMath Assistant.
Build my Elephant 100 planYearly has a 7-day free trial for eligible customers, or take a Race Pass for this race.
To answer this for you, the Course Assistant uses your training and your race plan.
Example answer
Your long runs peak at 30 km, so the plan builds to 4-hour long runs, two of them at night.
Yearly has a 7-day free trial for eligible customers, or take a Race Pass for this race.
Try asking Elephant 100
Ask anything - we'll open your Elephant 100 plan with your question ready.
Loading the Course Assistant
Race-ready pack
Too late to build a season. Not too late to race smarter.
With 25 days to go, training can still sharpen you, but most of what you can still gain is freshness. What changes your finish most now is how you fuel each leg and how rested you arrive.
25 days to the startFri, Dec 4 · 08:00 GMT+7
Fuel, checkpoint by checkpoint
| Checkpoint | km | Fuel |
|---|---|---|
| A18 Wat Ban Iak9.1 km · +399 m | 9.1 | In the app |
| A9 Wat Phraphutthabat Si Roi11.2 km · +826 m | 20.3 | In the app |
| A10 Mae Ka Piang Village7.9 km · +408 m | 28.2 | In the app |
| A11 Ban Pang hai School9.5 km · +595 m | 37.7 | In the app |
| A12 Chao Mae Luang Upatham 2 School5.8 km · +539 m | 43.5 | In the app |
| A13 Maesa Elephant Camp13.8 km · +504 m | 57.3 | In the app |
| A14 Chao Pho Luang Upatham 7 School9.2 km · +720 m | 66.5 | In the app |
| A15 Wat Doi Pui9.8 km · +734 m | 76.3 | In the app |
| Chiang Mai PAO Park23.7 km · +775 m | 100 | In the app |
Fuel by the hour, not by the kilometre - each leg is time between aid stations. Race on the fuel you trained with: nothing new this week.
Arrive fresh
- 6h00This week
- 5h17Week 2
- 5h17Week 3
- 3h36Race week
What the plan engine gives at 6 h/week: 1 week at your current volume, 2 sharpening weeks just under it, then a lighter race week.
Your days, one by one
Your Elephant 100 race plan
Your finish estimate, your fuelling leg by leg, and your race week day by day. Elephant 100 is already filled in.
With a Race Pass (€39, once) or Premium: the full roadbook and race-week training for Elephant 100.
Aid stations and checkpoints
| Checkpoint | KmMi | Cumulative gain (m)Cumulative gain (ft) | Cumulative loss (m)Cumulative loss (ft) |
|---|---|---|---|
| Start - Wat Nhong Bua Noi | 00 | 00 | 00 |
| A18 Wat Ban Iak | 9.15.7 | 3991,309 | 217712 |
| A9 Wat Phraphutthabat Si Roi | 20.312.6 | 1,2254,019 | 5301,739 |
| A10 Mae Ka Piang Village | 28.217.5 | 1,6335,358 | 1,2724,173 |
| A11 Ban Pang hai School | 37.723.4 | 2,2287,310 | 1,7535,751 |
| A12 Chao Mae Luang Upatham 2 School | 43.527 | 2,7679,078 | 1,8926,207 |
| A13 Maesa Elephant Camp | 57.335.6 | 3,27110,732 | 3,11010,203 |
| A14 Chao Pho Luang Upatham 7 School | 66.541.3 | 3,99113,094 | 3,34410,971 |
| A15 Wat Doi Pui | 76.347.4 | 4,72515,502 | 3,71712,195 |
| Chiang Mai PAO Park (Finish) | 10062.1 | 5,50018,045 | 5,54518,192 |
Data is approximate and courses change between editions - always verify against the official race guide. Source: official race guide, verifiedSeptember 13, 2026 - Official race website
Crew access and race-day roadbook
Public crew and drop-bag points for Chiang Mai by UTMB 100K. Unlock the complete saved roadbook in the app for personalized checkpoint times and a printable crew card.
Unlock the complete saved roadbook in the app: checkpoint times, pacing, fueling and a printable crew card. Public course facts remain available here.
FAQ
How long is Elephant 100?
Elephant 100 covers approximately 100 km (about 62 miles) point to point, from Wat Nhong Bua Noi to Chiang Mai PAO Park in northern Thailand.
How much elevation gain does Elephant 100 have?
The 2026 course carries around 5,500 m of cumulative elevation gain and about 5,545 m of loss, finishing some 45 m below the start. The biggest single climb is a little over 800 m.
What is the cutoff time for Elephant 100?
The overall cutoff is 28 hours from the 08:00 start on Friday 4 December 2026, with intermediate barriers at the major aid stations. The winning time in 2025 was 09:14:20.
What is the difference between Elephant 100 and Chiang Dao 160?
Both finish at Chiang Mai PAO Park on the same day, and Elephant 100 runs the southern 80 km of the longer course, joining it at Wat Phraphutthabat Si Roi. Chiang Dao 160 covers the whole northern section from Wat Tham Chiang Dao instead, which is why it is 73 km and 4,300 m of climbing longer.
How do you qualify for Elephant 100?
Entry requires 6 Running Stones. As the UTMB World Series Asia-Pacific Major, Chiang Mai Thailand by UTMB awards double Running Stones and ten-deep automatic entry to the UTMB World Series Finals.
What is the average Elephant 100 finish time?
Across the 974 finishers of the 2025 edition the median finish time was 22:03:02 - half the field took longer than that - while the average was 21:14:11. Men finished in a median 21:55:34 and women 22:39:00, and the median finisher crossed the line 5:56:58 inside the 28-hour cutoff. Note that the 2025 edition ran 96 km against the 100 km of the 2026 course.
How many people finish Elephant 100?
974 of the 1,078 starters finished the 2025 edition, a finish rate of 90.4 per cent - one of the highest of any race in this catalogue. All 104 non-finishers are recorded as withdrawals rather than time-outs, so nobody was stopped by a barrier.
Training for this race?
TrailMath builds periodized trail training plans around your goal race.
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