Runners' Almanac
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Early April · Midwest · Loop

St. Louis Marathon (GO! St. Louis)

St. Louis, MO · Saturday, April 3, 2027

Runs along the riverfront beneath the Gateway Arch, the tallest arch in the world at 630 feet, completed in 1965 as a monument to westward expansion. Rolling course through downtown.

Gateway Arch Riverfront

Official site

Opens the race organizer's website

Typical start

47°

Cooler than 58% of U.S. marathons

Modeled historical conditions

Elevation gain

600ft

Flatter than 23% of races

Estimated total climb

Field size

1.2K

Larger than 54% of races

Estimated field

PR potential

7.3/10

Ahead of 37% 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

39°

Start

47°

Midday

58°

ExcellentGoodWarmHeat risk

Typical start sits at 47°F, excellent marathon conditions.

Typical dew point 40°F, 22% chance of precipitation, wind around 10 mph. All modeled.

The bottom line

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

St. Louis Marathon (GO! St. Louis) 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 St. Louis, MO, with steady rollers that reward even pacing.

The case for it

  • Not enough verified data yet.

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
~1,200 runners(estimated)
Crowd support
Pockets of spectators
Entry
Data coming soon
Start / finish
Start and finish in the same area

Race details

Typical timing
Early April
Next confirmed date
Saturday, April 3, 2027
Region
Midwest
Editorial tier
Featured
Data last reviewed
2026-08-26
  • Loop course
  • Destination race

Similar races

Races with a comparable profile.

Early April · Midwest

St. Louis Marathon

St. Louis, MO

Weather
47°Ftypical startModelled estimate
Field size
~1,200 runners
Course
Rolling
Elevation
600 ft gain · 0 ft net

Event listed as: Marathon

PR7Weather9Experience7

Mid-October · Midwest

Des Moines Marathon

Des Moines, IA

Weather
48°Ftypical startModelled estimate
Field size
~1,500 runners
Course
Rolling
Elevation
500 ft gain

State Capitol grounds and Gray's Lake

PR7Weather9Experience7