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Mid-December · Midwest · Loop

Omaha Costco Marathon

Omaha, NE · Saturday, December 12, 2026

Event: Omaha Costco Marathon

Registration opens on the organizer's site

Typical start

30°

Cooler than 98% of U.S. marathons

Modeled historical conditions

Elevation gain

600ft

Flatter than 23% of races

Estimated total climb

Field size

1K

Larger than 44% 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

600 ft gain · 0 ft net

Rolling course, loop.

0510152026.2
Schematic profile drawn from total gain, total loss and course category, on a shared vertical scale of 400 ft. Not a surveyed GPS trace.

Race-day weather

Modeled from location, month and coastal proximity, not verified race history.

6 AM

22°

Start

30°

Midday

41°

ExcellentGoodWarmHeat risk

Typical start sits at 30°F, warm for racing.

Typical dew point 18°F, 16% chance of precipitation, wind around 10 mph. All modeled.

The bottom line

A small race that trades atmosphere for room to run.

Omaha Costco 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 Omaha, NE, with steady rollers that reward even pacing.

The case for it

  • Runners who want a low-key start

The tradeoffs

  • No notable warnings in the data.

Course and logistics

Course type
Loop
Surface
Road
Profile
Rolling
Total gain
600 ft(estimated)
Total loss
600 ft(estimated)
Net elevation
0 ft(estimated)
Field size
~1,000 runners(estimated)
Crowd support
Pockets of spectators
Entry
Easy
Entry fee
$0(most recent listed price)
Day of week
Saturday
Start / finish
Start and finish in the same area

Race details

Typical timing
Mid-December
Next confirmed date
Saturday, December 12, 2026
Registration
Open now
Region
Midwest
Editorial tier
Recommended
Data last reviewed
2026-08-26
  • Loop course
  • Easy entry

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