San Diego 100 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 14 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 - San Diego 100 · 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 | Trout Pondkm 20.5 | Cuyamaca Peakkm 31.0 | Green Valleykm 46.5 | Blue Ribbonkm 56.4 | Sweetwaterkm 65.9 | Pine Creek Rdkm 78.9 | Hammer's Hideawaykm 82.5 | Penny Pines 1km 94.4 | Meadowskm 102.8 | Red Tail Roostkm 113.1 | Per's Cabinkm 121.1 | Penny Pines 2km 129.3 | Pioneer Mailkm 135.6 | Sunrisekm 147.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water | available | available | available | available | available | available | available | available | available | available | available | available | available | available |
| Brand products | available | available | available | unavailable | available | unavailable | available | available | available | available | available | available | available | available |
La feuille de ton assistance pour San Diego 100 · 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.
- Green Valleykm 46.5
- Sweetwaterkm 65.9
- Meadowskm 102.8
- Red Tail Roostkm 113.1
- Pioneer Mailkm 135.6
- Sunrisekm 147
Recto, verso et planche d'étiquettes, en PDF : l'exemple d'une coureuse de l'UTMB.
Elevation profile
The course and its aid stations
San Diego 100: 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 29h51 to 18h15, and the aid-station stop budget from 2h15 to 0h45. 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 455, the overall cut-off of 32h00 is no longer reachable at the estimated pace.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 29h51 | 2h15 | 11 | 1,791 g | 20.9 L | 14,925 mg | +2h09 |
| 550 | 27h31 | 1h49 | 11 | 1,651 g | 19.3 L | 13,761 mg | +4h29 |
| 600 | 25h15 | 1h29 | 11 | 1,515 g | 17.7 L | 12,627 mg | +6h45 |
| 650 | 23h12 | 1h14 | 9.2 | 1,392 g | 16.2 L | 11,599 mg | +8h48 |
| 700 | 21h20 | 1h02 | 7.3 | 1,280 g | 14.9 L | 10,667 mg | +10h40 |
| 750 | 19h49 | 0h52 | 5.8 | 1,189 g | 13.9 L | 9,905 mg | +12h11 |
| 800 | 18h15 | 0h45 | 4.3 | 1,095 g | 12.8 L | 9,129 mg | +13h45 |
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
San Diego 100 is 162 km and 4,202 m of elevation gain, that's 203 km-effort: category XL, among 55 races in 2027. Its time limit of 32 h requires a minimum speed of 5.0 km/h: rank 42 out of 49 of the widest cut-off times in XL.
XL ultra-trails 2027: 155 to 209 km-effort
Similar effort in 2027
- Leadville 100 · 201 km-effort
- No Business (Clockwise - Odd Years) · 201 km-effort
- Monte Rosa Walserwaeg - Les sentiers des Valdôtains · 201 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 — San Diego 100
Weather for San Diego 100
The weather for San Diego 100 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 San Diego 100, hour by hour on the courseFrequently asked questions
How many checkpoints?
San Diego 100 has 15 checkpoints: 12 aid stations, 2 water points, and 1 checkpoint with undocumented contents. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Trout Pond: 20.5 km and 492 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?
San Diego 100 is 162 km long with 4202 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 25h15 for San Diego 100.
What's the weather forecast?
The weather for San Diego 100 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 San Diego 100?
In 2 minutes, RAVIT generates your complete plan: segment-by-segment time, carbs, water and sodium at every aid station, printable roadbook.
No card required · Instant results