Trail of the Kings - Lake Toba - Caldera Crown 100K 2027
The forecast arrives five days before the start.
Here you'll find the elevation profile, an estimated finish time based on your UTMB Index and details of the 11 aid stations to plan your nutrition and hydration segment by segment.
What's your time based on your UTMB?
Times estimated by the RAVIT model, learned from real ultra-trail finish times. Enter your UTMB Index (utmb.world) to get a personalized estimate.
Cut-off times and crew - Trail of the Kings - Lake Toba - Caldera Crown 100K · 2027
Data from the official race rules, checked for every edition. The race rules prevail. Positions are interpolated along the GPX track and are a guide, not official course marking.
What you'll find at each aid station
| Product | Paraduankm 9.2 | Ronggur Nihutakm 21.0 | Huta Tinggikm 34.0 | Sitao-taokm 45.7 | Pusuk Buhitkm 50.2 | Geopark Information Centerkm 57.1 | SMAN 1 Sianjur Mulamulakm 63.1 | Ginolatkm 71.1 | Bonan Dolokkm 83.2 | Bukit Burungkm 93.9 | Finishkm 102.1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Water | available | available | available | available | available | available | available | available | available | available | available |
| Brand products | available | available | available | unavailable | available | unavailable | unavailable | available | available | available | unavailable |
| Hot meal | unavailable | unavailable | unavailable | available | unavailable | available | available | unavailable | unavailable | unavailable | available |
Elevation profile
The course and its aid stations
Trail of the Kings - Lake Toba - Caldera Crown 100K: times, aid-station stops and fuelling needs by UTMB® Index
Between a UTMB® Index of 500 and 800, the estimated finish time on this race runs from 18h25 to 11h01, and the aid-station stop budget from 0h45 to 0h16. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
Source
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 18h25 | 0h45 | 4.4 | 1,105 g | 12.9 L | 9,211 mg | +11h35 |
| 550 | 16h45 | 0h37 | 4 | 1,005 g | 11.7 L | 8,377 mg | +13h15 |
| 600 | 15h12 | 0h30 | 4 | 912 g | 10.6 L | 7,603 mg | +14h48 |
| 650 | 13h56 | 0h25 | 4 | 836 g | 9.8 L | 6,969 mg | +16h04 |
| 700 | 12h52 | 0h21 | 4 | 772 g | 9 L | 6,437 mg | +17h08 |
| 750 | 11h52 | 0h18 | 4 | 712 g | 8.3 L | 5,937 mg | +18h08 |
| 800 | 11h01 | 0h16 | 4 | 661 g | 7.7 L | 5,506 mg | +18h59 |
Figures based on 60 g of carbohydrate, 700 mL of fluid and 500 mg of sodium per hour, "average" preparation and mild conditions (15–25 °C). Above 25 °C, count on roughly 900 mL/h and 700 mg/h. Carbohydrate intake is trained: 60 g/h is a floor, 90 g/h assumes a glucose-fructose blend and a gut used to it.
Measured on the 2026 edition: the field checkpoint by checkpoint
57 starters, 7% DNF rate, 11 timed checkpoints.
| Segment | km | Median | Middle half | Measured |
|---|---|---|---|---|
| Waterfront City Pangururan → Paraduan | 9.3 | 1 h 23 | 1 h 04 – 1 h 28 | 57 |
| Paraduan → Ronggur Nihuta | 21.1 | 1 h 44 | 1 h 28 – 1 h 57 | 57 |
| Ronggur Nihuta → Huta Tinggi | 34.2 | 2 h 07 | 1 h 44 – 2 h 25 | 57 |
| Huta Tinggi → Sitao-tao | 45.9 | 2 h 10 | 1 h 44 – 2 h 39 | 57 |
| Sitao-tao → Pusuk Buhit | 50.4 | 1 h 46 | 1 h 31 – 2 h 26 | 55 |
| Pusuk Buhit → Geopark | 57.3 | 1 h 19 | 1 h 06 – 1 h 34 | 55 |
| Geopark → SMA N 1 Sianjur Mula Mula | 64 | 1 h 27 | 1 h 07 – 1 h 50 | 55 |
| SMA N 1 Sianjur Mula Mula → Ginolat | 71.2 | 2 h 56 | 2 h 33 – 3 h 29 | 55 |
| Ginolat → Bonan Dolok | 83.4 | 4 h 11 | 3 h 28 – 4 h 53 | 52 |
| Bonan Dolok → Bukit Burung | 94.1 | 2 h 32 | 2 h 00 – 3 h 02 | 52 |
| Bukit Burung → Waterfront City Panguruan | 102.3 | 1 h 42 | 1 h 20 – 2 h 04 | 53 |
Where runners drop out. Ginolat (2) · Sitao-tao (1) · Geopark (1) out of 4 total DNFs.
RAVIT record from the official timing of the 2026 edition, data from September 15, 2026.
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Other trails worth preparing for
Trail of the Kings - Lake Toba - Caldera Crown 100K over the years
Sources and method
- Time projection — times by UTMB Index are taken from the actual splits of runners in each level band on previous editions of this race, aid station stops included. No formula is used as long as these results exist.
- Trail nutrition — hourly targets for carbohydrate, fluid and sodium follow the commonly accepted ultra-endurance guidance. La Clinique du Coureur — Fuelling in trail running
- Course, aid stations and cut-offs — taken from the event's official rules, which prevail in case of any discrepancy. Official site — Trail of the Kings - Lake Toba - Caldera Crown 100K
Weather for Trail of the Kings - Lake Toba - Caldera Crown 100K
The weather for Trail of the Kings - Lake Toba - Caldera Crown 100K will appear here as soon as the forecast models reach that date, around five days before the start: feels-like temperature, rain, snow, wind and storms, section by section and at your passage time.
Detailed weather for Trail of the Kings - Lake Toba - Caldera Crown 100K, hour by hour on the courseFrequently asked questions
How many checkpoints?
Trail of the Kings - Lake Toba - Caldera Crown 100K has 11 checkpoints: 11 aid stations. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Huta Tinggi: 13.0 km and 133 m elevation gain. That's the one to load up for first.
How do I find the exact location of an aid station?
The Google Maps icon in the “Access” column opens the aid station's location: handy for planning your crew's routes.
What distance and elevation gain?
Trail of the Kings - Lake Toba - Caldera Crown 100K is 102 km long with 4322 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 15h12 for Trail of the Kings - Lake Toba - Caldera Crown 100K.
What's the weather forecast?
The weather for Trail of the Kings - Lake Toba - Caldera Crown 100K will be published on this page around five days before the start, once the forecast models reach the race date. It will be detailed section by section: feels-like temperature, rain, snow, wind and storms.
Want to stack the odds in your favor for Trail of the Kings - Lake Toba - Caldera Crown 100K?
In 2 minutes, RAVIT generates your complete plan: segment-by-segment time, carbs, water and sodium at every aid station, printable roadbook.
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