All marathons

Mid-December · Southwest · Loop

Dallas Marathon

Dallas, TX · Sunday, December 13, 2026

A rolling loop past White Rock Lake into a downtown finish, run in mid-December when North Texas weather is at its most cooperative for distance running.

White Rock Lake and downtown finish

  • Scenic
Official site

Opens the race organizer's website

Typical start

48°

Cooler than 49% of U.S. marathons

Modeled historical conditions

Elevation gain

600ft

Flatter than 23% of races

Estimated total climb

Field size

4K

Larger than 88% of races

Estimated field

PR potential

7.6/10

Ahead of 41% of races

Almanac model

Percentiles compare this race against all 224 U.S. marathons in the Almanac.

Course profile

600 ft gain

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

40°

Start

48°

Midday

58°

ExcellentGoodWarmHeat risk

Typical start sits at 48°F, excellent marathon conditions.

Typical dew point 36°F, 16% chance of precipitation, wind around 7 mph. All modeled.

The bottom line

A balanced race that suits most goals without specialising in any.

Dallas Marathon is a strong choice for a first marathon, and the course rolls gently without any sustained climbing. The tradeoff is that nothing about it is extreme in either direction.

Why runners choose this race

A loop course around Dallas, TX, with steady rollers that reward even pacing.

The case for it

  • Runners who care about scenery

The tradeoffs

  • No notable warnings in the data.

Course and logistics

Course type
Loop
Surface
Road
Profile
Rolling
Total gain
600 ft(estimated)
Field size
~3,500-4,500 runners(estimated)
Crowd support
Steady crowd support
Entry
Data coming soon
Start / finish
Start and finish in the same area

Race details

Typical timing
Mid-December
Next confirmed date
Sunday, December 13, 2026
Region
Southwest
Editorial tier
Featured
Data last reviewed
2026-08-26
  • Scenic
  • Loop course
  • Destination race

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Weather
48°Ftypical startModelled estimate
Field size
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Course
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Elevation
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