Garmin Olathe Marathon
Olathe, United States of America · Sunday 25 April 2027
The Garmin Olathe Marathon is an annual long-distance running event held in Olathe, Kansas, about 20 minutes southwest of downtown Kansas City. The event is hosted at the Garmin World Headquarters and marks its 22nd anniversary in 2025, having started in 2003. Participants can choose from a full marathon, half marathon, 10K, and family or youth distances. The marathon course is certified and sanctioned by USATF, ensuring standardization and eligibility for official records.
Difficulty Calculator
h
:m
:s
Adjusted Time
4:07:32
Time difference: +7.5 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain272m
Elevation High332m
Elevation Low260m
Weather Forecast
High23°C
Low9°C
Chance of Rain43%
How hard is Garmin Olathe Marathon?
Difficultharder than 63% of marathons
Flattest / easiestHardest
On our difficulty model, Garmin Olathe Marathon plays about 10 minutes slower than an average road marathon for a 3:30 runner. It ranks #431 hardest of 1150 marathons we analyse, and #228 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 Garmin Olathe 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 Garmin Olathe Marathon | Difference |
|---|---|---|
| 3:00:00 | 3:02:16 | +02:16 |
| 3:30:00 | 3:34:46 | +04:46 |
| 4:00:00 | 4:07:32 | +07:32 |
| 4:30:00 | 4:40:32 | +10:32 |
| 5:00:00 | 5:13:46 | +13:46 |
| 5:30:00 | 5:47:12 | +17:12 |
| 6:00:00 | 6:20:50 | +20:50 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Garmin Olathe Marathon 2027 Course Analysis
Garmin Olathe Marathon is a full marathon held in Olathe, United States of America. It is scheduled for Sunday 25 April 2027. The course is run on road surface with 272m of total climbing, with its high point near 332m above sea level. For registration and full race details, visit the official Garmin Olathe Marathon website.
Elevation Profile
With 272m of total climbing, this is a gently undulating course. 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 April, the expected race day conditions are as follows. Moderate temperatures between 9°C and 23°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a moderate chance of rain (43%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.
Surface Type: Road
Garmin Olathe 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 Garmin Olathe Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Garmin Olathe Marathon fits your goal, these courses play out about the same on our difficulty model.
Other Marathons in United States of America
Beantown Marathon
Hingham, United States of America
Road174m gainSept 2026
Bound for Boston Marathon
Suwanee, United States of America
Road180m gainSept 2026
Tupelo Marathon
Tupelo, United States of America
Road261m gainSept 2026
Sackets Harbor Marathon
Sackets Harbor, United States of America
Road174m gainSept 2026
REVEL Big Bear Marathon
Big Bear Lake, United States of America
Trail101m gainSept 2026
Minocqua No Frills Marathon
Minocqua, United States of America
Road354m gainSept 2026