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Salmon Marathon

Salmon Marathon

Salmon, United States of America · Sunday 5 September 2027

RoadFull Marathon

Salmon, Idaho sits in the heart of central Idaho's river country, where the Salmon River winds through dramatic terrain that feels genuinely removed from the everyday world. The town itself is small and tight-knit, the kind of place where outdoor pursuits aren't an afterthought but a way of life. Running a marathon here means moving through high desert landscape with real elevation, surrounded by the kind of scenery that makes you forget you're suffering. The September timing helps too, offering cooler temperatures and clearer air than summer months, though the altitude ranging from just under 1,200 meters to nearly 1,500 meters means your lungs will notice the thin air from the gun. The course is moderately hilly throughout, which means you won't get the false flatness of a completely manageable route. There's genuine climbing built into the 42.2 kilometers, with over 240 meters of elevation gain that keeps you working the whole way. This isn't a pancake course where you can drift on autopilot. Instead, you'll have to run smart, respect the terrain, and expect your effort to feel real. The rolling nature of the route means you'll get some downhill sections that feel earned, and the consistent elevation throughout means you won't face any unexpected brutal climbs late in the race when you're already shot. Race day in September in Salmon means cool mornings and the possibility of changing weather. You'll be running at altitude on a full road marathon, so preparation and pacing become especially important. The small town atmosphere means this isn't a massive event, which works in your favor for personal service and a genuine sense of community. The landscape around you won't distract you from the work, but it will remind you why you're out here doing something hard in a place that still feels a little wild.

Difficulty Calculator

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Adjusted Time

4:06:05

Difficult

Time difference: +6.1 minutes compared to a flat, road, temperate course.

Course Details

Elevation Gain246m
Elevation High1490m
Elevation Low1198m

Weather Forecast

High26°C
Low10°C
Chance of Rain46%

How hard is Salmon Marathon?

Difficultharder than 64% of marathons
Flattest / easiestHardest

On our difficulty model, Salmon Marathon plays about 11 minutes slower than an average road marathon for a 3:30 runner. It ranks #419 hardest of 1151 marathons we analyse, and #222 of 576 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 Salmon 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 timeOn Salmon MarathonDifference
3:00:003:01:22+01:22
3:30:003:33:35+03:35
4:00:004:06:05+06:05
4:30:004:38:51+08:51
5:00:005:11:52+11:52
5:30:005:45:05+15:05
6:00:006:18:32+18:32

Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.

Salmon Marathon 2027 Course Analysis

Salmon Marathon is a full marathon held in Salmon, United States of America. It is scheduled for Sunday 5 September 2027. The course is run on road surface with 246m of total climbing and around 533m of descent (a net drop of roughly 287m), with its high point near 1490m above sea level.

Elevation Profile

This is a net-downhill course: it descends roughly 287m more than it climbs (246m of ascent against about 533m of descent), dropping from a high point near 1490m toward 1198m 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.

Expected Race Day Weather

Based on historical weather data for September, the expected race day conditions are as follows. Moderate temperatures between 10°C and 26°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 (46%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.

Surface Type: Road

Salmon 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 Salmon Marathon against other marathons to find the right race for your goals.

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