Sonoma Fall Classic 100 Mile 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 20 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 - Sonoma Fall Classic 100 Mile · 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 | Pritchett Peakskm 9.3 | Start/Finishkm 18.7 | Island Viewkm 28.6 | Warm Springskm 40.5 | Wulfowkm 49.3 | Liberty Glenkm 54.1 | Lone Rockkm 61.2 | Falcon's Nestkm 67.9 | Lone Rock 2km 74.4 | Start/Finishkm 80.9 | Pritchett Peakskm 90.2 | Start/Finishkm 99.5 | Island Viewkm 109.4 | Warm Springskm 121.4 | Wulfowkm 130.2 | Liberty Glenkm 134.9 | Lone Rockkm 142.0 | Falcon's Nestkm 148.8 | Lone Rock 2km 155.3 | Start/Finishkm 161.7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water | available | available | available | available | available | available | available | available | available | available | available | available | available | available | available | available | available | available | available | available |
| Brand products | unavailable | available | available | available | unavailable | available | available | unavailable | available | available | unavailable | available | available | available | unavailable | available | available | unavailable | available | available |
La feuille de ton assistance pour Sonoma Fall Classic 100 Mile · 2027
Ton assistance peut te voir à ces postes. Ton plan RAVIT y met tes heures, ce qu'elle te tend et la route pour y aller.
- Start/Finishkm 18.7
- Liberty Glenkm 54.1
- Lone Rockkm 61.2
- Lone Rock 2km 74.4
- Start/Finishkm 80.9
- Start/Finishkm 99.5
- Liberty Glenkm 134.9
- Lone Rockkm 142
- Lone Rock 2km 155.3
Recto, verso et planche d'étiquettes, en PDF : l'exemple d'une coureuse de l'UTMB.
Elevation profile
The course and its aid stations
Sonoma Fall Classic 100 Mile: 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 34h36 to 21h44, and the aid-station stop budget from 2h55 to 0h53. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
Source
Below a UTMB® Index of roughly 480, the overall cut-off of 36h00 is no longer reachable at the estimated pace.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 34h36 | 2h55 | 12 | 2,076 g | 24.2 L | 17,296 mg | +1h24 |
| 550 | 31h58 | 2h14 | 12 | 1,918 g | 22.4 L | 15,984 mg | +4h02 |
| 600 | 29h46 | 1h48 | 12 | 1,786 g | 20.8 L | 14,879 mg | +6h14 |
| 650 | 27h24 | 1h28 | 12 | 1,644 g | 19.2 L | 13,703 mg | +8h36 |
| 700 | 25h17 | 1h14 | 11.3 | 1,517 g | 17.7 L | 12,644 mg | +10h43 |
| 750 | 23h29 | 1h02 | 9.5 | 1,409 g | 16.4 L | 11,741 mg | +12h31 |
| 800 | 21h44 | 0h53 | 7.7 | 1,304 g | 15.2 L | 10,868 mg | +14h16 |
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.
In the 2027 ranking
Sonoma Fall Classic 100 Mile is 162 km and 6,977 m of elevation gain, that's 231 km-effort: category XXL, among 59 races in 2027. Its time limit of 36 h requires a minimum speed of 4.5 km/h: rank 41 out of 51 of the widest cut-off times in XXL.
XXL ultra-trails 2027: 210 km-effort and above
Similar effort in 2027
- SUFFERFEST · 231 km-effort
- PROVITAL BACKYARD ULTRA - GRAN CANARIA - 30 Loops · 232 km-effort
- Eastern States 100 (Official) · 230 km-effort
Other trails worth preparing for
- Pinhoti 100162 km · 3,750 m D+ · October 31, 2026
- Javelina Jundred 100 miler158 km · 1,688 m D+ · October 31, 2026
- Mamba 100161 km · 143 m D+ · November 6, 2026
- Tunnel Hill 100161 km · 355 m D+ · November 7, 2026
- Mountain Masochist 100k101 km · 3,268 m D+ · November 7, 2026
- Rio Del Lago161 km · 2,697 m D+ · November 7, 2026
- Looking Glass 100K98 km · 3,190 m D+ · November 14, 2026
- Jackson County Ultras100 km · 2,491 m D+ · December 5, 2026
- Devil Dog Ultra 100k100 km · 1,820 m D+ · December 5, 2026
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 — Sonoma Fall Classic 100 Mile
Weather for Sonoma Fall Classic 100 Mile
The weather for Sonoma Fall Classic 100 Mile 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 Sonoma Fall Classic 100 Mile, hour by hour on the courseFrequently asked questions
How many checkpoints?
Sonoma Fall Classic 100 Mile has 20 checkpoints: 14 aid stations and 6 water points. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Warm Springs: 11.9 km and 445 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?
Sonoma Fall Classic 100 Mile is 162 km long with 6977 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 29h46 for Sonoma Fall Classic 100 Mile.
What's the weather forecast?
The weather for Sonoma Fall Classic 100 Mile 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 Sonoma Fall Classic 100 Mile?
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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