2026 Tracking & Results
The listed edition is scheduled for Nov 7-8, 2026. Tracking may not show current positions until the race starts. Live positions are not final results. Published outcomes will be recorded here once a result source is available.
Event Overview
| Date | Nov 7-8, 2026 |
|---|---|
| Location | Beal's Point, Granite Bay, California, USA |
| Format | Fixed-Distance |
| Terrain | Mixed |
| Region | North America |
| Distance / duration | 100 mi |
| State / area | California (CA) |
| Course model | Mixed |
| Edition note | The organizer advertises registration through November 2 and now links 2026 RaceResult timing. The final 2026 runner guide is still marked coming soon as of October 26; use the current 2026 schedule and pace chart while awaiting it. |
| Elevation gain | Approximately 13,458 ft |
| Elevation loss | Approximately 13,458 ft |
| Cutoff | 30 hours |
| Start | 5:00 AM Saturday |
| Highlights | Folsom Lake, Auburn State Recreation Area |
Course & Terrain
Hybrid course with short Beal's Point and Lake Natoma loops followed by an out-and-back trail journey toward Cool and the Auburn State Recreation Area.
Key course features to know before comparing this race:
- American River parkway and Folsom Lake terrain
- Fire roads and Sierra-foothill singletrack
Paved parkway, fire road, and foothill singletrack create meaningful changes in surface, grade, and pace across the race.
Entry & Logistics
| Registration and fees | Check the official event website for current availability, deadlines, prices, taxes, and refund terms. |
|---|---|
| Drop bags | The race-day schedule gives 4:00–4:45 AM for drop-bag collection. A separate paragraph says by the 5:00 AM start; use the earlier window and confirm with the organizer. |
| Logistics note | Bib pickup is mandatory on Friday, November 6, noon–7:00 PM at Fleet Feet Folsom. Bring reusable drinkware; the race is cupless. Follow the final 2026 guide when released. |
Why This Race Matters
Rio Del Lago 100 Mile Endurance Run is a useful reference point for runners comparing long fixed-distance ultras where most of the field runs through the night. Its format, terrain, and support model shape the kind of preparation required: not just fitness, but pacing discipline, nutrition planning, foot care, and the ability to make good decisions under fatigue.
Preparing for a Race Like Rio Del Lago 100 Mile Endurance Run
The 100-mile race guide covers the format as a whole. These guides go deeper:
- Walking strategy for ultramarathons: When and how to walk by terrain, effort and cutoffs.
- Crew and aid-station strategy: Crew tables, aid stops, drop bags and runner preferences.
- Gut training for ultrarunners: A six-week practice sequence for race-day fueling.
- Tapering for ultramarathons: Plan the taper and race week around your own recovery.
Planning Notes
- Treat intermediate cutoff gates as part of the course. Build enough margin for aid stops and late-race slowdown, and verify every current gate in the official rules.
- The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
- The final 2026 runner guide is not yet published
- The hybrid course requires different pacing across loops and trail sections
Event FAQs
What is the Rio Del Lago 100 cutoff?
The official 2026 pace chart lists a 30-hour finish limit.
Is Rio Del Lago one continuous loop?
No. The official course combines shorter loops with a longer out-and-back trail section.
Related Preparation
- Compare verified US 100-mile races
- Compare this race in the full 2026 calendar
- Open the 100-Mile format guide
- Open the Fixed-Distance format guide
- Compare all race formats
- Use the timed-race pace calculator
- Plan checkpoint arrivals and cutoff buffers
- Print a pace band for your goal time
- Estimate race calories and plan fueling
- Build a crew and drop-bag plan
- Build a race-specific gear checklist
Verification & Sources
Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated October 15, 2026. Organizers can revise details after review.
- Official Rio Del Lago 100 site, rules, and results — https://www.rio100mile.com/
- Official 2026 RaceResult timing, linked by NorCal Ultras — https://my.raceresult.com/431055/
- Multiday Running event directory review scope: October 15, 2026.