- Weather
- 41°Ftypical startModelled estimate
- Field size
- ~800 runners
- Course
- Rolling
- Elevation
- 500 ft gain · 0 ft net
Event listed as: Full Marathon
PR7Weather9Experience7
Mid-September · Midwest · Loop
Sioux Falls Marathon
Sioux Falls, SD · Sunday, September 20, 2026
Event listed as: Single Race: Full Marathon
Registration opens on the organizer's site
Typical start
55°
Cooler than 17% of U.S. marathons
Modeled historical conditions
Elevation gain
400ft
Flatter than 38% of races
Estimated total climb
Field size
600
Larger than 22% of races
Estimated field
PR potential
6.9/10
Ahead of 23% of races
Almanac model
Percentiles compare this race against all 224 U.S. marathons in the Almanac.
Course profile
400 ft gain · 0 ft net
Rolling course, loop.
0510152026.2
Race-day weather
Modeled from location, month and coastal proximity, not verified race history.
6 AM
47°
Start
55°
Midday
66°
ExcellentGoodWarmHeat risk
Typical start sits at 55°F, good conditions.
Typical dew point 43°F, 16% chance of precipitation, wind around 10 mph. All modeled.
The bottom line
A small race that trades atmosphere for room to run.
Sioux Falls Marathon is a strong choice for a first marathon, and the course rolls gently without any sustained climbing. The tradeoff is atmosphere: expect long quiet stretches and few spectators.
Why runners choose this race
A loop course around Sioux Falls, SD, with steady rollers that reward even pacing.
The case for it
- Runners who want a low-key start
The tradeoffs
- You want crowds and on-course energy
Course and logistics
- Course type
- Loop
- Surface
- Road
- Profile
- Rolling
- Total gain
- 400 ft(estimated)
- Total loss
- 400 ft(estimated)
- Net elevation
- 0 ft(estimated)
- Field size
- ~600 runners(estimated)
- Crowd support
- Quiet, low-key
- Entry
- Easy
- Entry fee
- $65(most recent listed price)
- Day of week
- Sunday
- Start / finish
- Start and finish in the same area
Race details
- Typical timing
- Mid-September
- Next confirmed date
- Sunday, September 20, 2026
- Registration
- Open now
- Region
- Midwest
- Editorial tier
- Recommended
- Data last reviewed
- 2026-08-26
- Loop course
- Easy entry
Similar races
Races with a comparable profile.
- Weather
- 48°Ftypical startModelled estimate
- Field size
- ~1,500 runners
- Course
- Rolling
- Elevation
- 500 ft gain
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- Weather
- 47°Ftypical startModelled estimate
- Field size
- ~1,200 runners
- Course
- Rolling
- Elevation
- 600 ft gain
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