
Billings, United States of America · Sunday 20 September 2026
Montana Marathon takes place in Billings, Montana on September 20, 2026, on a road surface with 158 meters of elevation gain across a course ranging from 954 meters to 1,283 meters in elevation. Runners will encounter rolling terrain typical of the region during the early fall season in south-central Montana.
Adjusted Time
3:58:26
Time difference: -1.6 minutes compared to a flat, road, temperate course.
On our difficulty model, Montana Marathon plays about 3 minutes slower than an average road marathon for a 3:30 runner. It ranks #775 hardest of 1150 marathons we analyse, and #381 of 575 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
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 Montana Marathon | Difference |
|---|---|---|
| 3:00:00 | 2:56:57 | −03:03 |
| 3:30:00 | 3:27:38 | −02:22 |
| 4:00:00 | 3:58:26 | −01:34 |
| 4:30:00 | 4:29:21 | −00:39 |
| 5:00:00 | 5:00:22 | +00:22 |
| 5:30:00 | 5:31:28 | +01:28 |
| 6:00:00 | 6:02:39 | +02:39 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Montana Marathon is a full marathon held in Billings, United States of America. It is scheduled for Sunday 20 September 2026. The course is run on road surface with 158m of total climbing and around 412m of descent (a net drop of roughly 254m), with its high point near 1283m above sea level.
This is a net-downhill course: it descends roughly 254m more than it climbs (158m of ascent against about 412m of descent), dropping from a high point near 1283m toward 954m above sea level. Point-to-point downhill courses like this are among the fastest available for a personal best or a Boston qualifier - just be aware that sustained descending fatigues the quads late in the race, so ease off early and do some downhill running in training.
Montana 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 Montana Marathon against other marathons to find the right race for your goals.
If Montana Marathon fits your goal, these courses play out about the same on our difficulty model.
Salt Lake City, United States of America
Sunset Beach, United States of America
Manistee, United States of America
Brooklyn Park, United States of America
Munising, United States of America
Aspen, United States of America