Crater Lake Marathon
Crater Lake, United States of America · Monday 9 August 2027
RoadFull Marathon
Crater Lake in Oregon sits at elevation, surrounded by volcanic landscape and pristine wilderness. The lake itself is the deepest in the United States, filling a caldera created nearly 8,000 years ago. The area is remote and dramatic, with steep cliffs rising from deep blue waters and coniferous forests covering the surrounding ridges. Running here means being far from the usual race infrastructure and crowds, immersed in one of the country's most geologically significant natural areas. The course stays flat to gently rolling throughout, which is good news for your legs, though the high elevation ranging between 1,842 and 2,384 meters above sea level will be the real challenge. Your body will feel the thin air from the start, even if the terrain isn't asking much of you mechanically. Most runners should expect to run slower than their sea-level pace, and the thinner oxygen means your aerobic system will be working harder than the ground profile suggests. The road surface is consistent, and the scenery will likely distract you from the altitude demands. Come prepared for cool temperatures and variable weather that can shift quickly at this elevation.
Difficulty Calculator
h
:m
:s
Adjusted Time
4:23:59
Time difference: +24.0 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain0m
Elevation High2384m
Elevation Low1842m
Weather Forecast
High38°C
Low24°C
Chance of Rain0%
How hard is Crater Lake Marathon?
Very Difficultharder than 80% of marathons
Flattest / easiestHardest
On our difficulty model, Crater Lake Marathon plays about 24 minutes slower than an average road marathon for a 3:30 runner. It ranks #229 hardest of 1150 marathons we analyse, and #129 of 575 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Crater Lake Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Crater Lake Marathon | Difference |
|---|---|---|
| 3:00:00 | 3:14:38 | +14:38 |
| 3:30:00 | 3:49:10 | +19:10 |
| 4:00:00 | 4:23:59 | +23:59 |
| 4:30:00 | 4:59:03 | +29:03 |
| 5:00:00 | 5:34:22 | +34:22 |
| 5:30:00 | 6:09:55 | +39:55 |
| 6:00:00 | 6:45:42 | +45:42 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Crater Lake Marathon 2027 Course Analysis
Crater Lake Marathon is a full marathon held in Crater Lake, United States of America. It is scheduled for Monday 9 August 2027. The course is run on road surface with 0m of total climbing, with its high point near 2384m above sea level.
Elevation Profile
With 0m of total climbing, this is a gently undulating course, ranging between roughly 1842m and 2384m above sea level. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Expected Race Day Weather
Based on historical weather data for August, the expected race day conditions are as follows. Hot conditions are expected, with temperatures between 24°C and 38°C. Heat is one of the biggest performance factors in distance running - for every degree above 15°C, finish times can slow by roughly 1-2%. Extra hydration and a conservative start are strongly recommended. There is a low chance of rain (0%), so dry conditions are likely.
Surface Type: Road
Crater Lake Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Crater Lake Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Crater Lake Marathon fits your goal, these courses play out about the same on our difficulty model.
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