Crater Lake Marathon
Crater Lake, United States of America · Saturday 9 August 2025
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
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:m
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Adjusted Time
3:52:41
Time difference: -7.3 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain0m
Elevation High2384m
Elevation Low1842m
Crater Lake Marathon 2025 Course Analysis
Crater Lake Marathon is a full marathon held in Crater Lake, United States of America, scheduled for Saturday 9 August 2025. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 2384m above sea level.
Elevation Profile
This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 1842m to 2384m above sea level — a 542m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Surface Type: Road
Crater Lake Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
How Difficult Is Crater Lake Marathon?
Our difficulty rating for Crater Lake Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
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.
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