Saturday, April 10, 2021 – Sunday, April 11, 2021 • St. Louis, MO • Course Map
The city known as the “gateway to the west” sees about 25,000 runners and walkers in all four races combined each year at the springtime GO! St. Louis Marathon & Family Fitness Weekend, which features a full marathon, half marathon and a marathon relay, all of which feature point-to-point courses and finish downtown.
All the races start just off Carr Street near the Martin Luther King Jr. Bridge and stay together for the first four miles of the race, which takes runners across the Martin Luther King Jr. Bridge into Illinois next door, on a loop along then back into Missouri and downtown St. Louis across the Eads Bridge.
From there, the course takes runners along a route made up entirely of paved city streets, through the city’s downtown areas along the Mississippi River, toward and within great view of the famed Gateway Arch that marks St. Louis as the “gateway to the west,” as well as sights like the Cardinals’ Busch Stadium and the Anheuser-Busch Brewery.
The course will take runners across two bridges and into two states (previous years’ races have featured no bridge crossings for the half marathon). There’s even a “race within a race,” a 3 1/2-mile Bridge Challenge that runners can sign up for.
The elevation of the course ranges from about 400 to 550 feet above sea level throughout the overall race, and the changes in elevation are largely gradual inclines and declines, which can tempt you to run at a faster pace earlier in the race.
Past participants say to stick with your planned pace, however, as you can easily exhaust yourself, especially if conditions are unexpectedly warm. Probably the most significant hills occur around the third mile and the sixth mile markers, and the last few miles into the finish line are mostly downhill.
The course time limit for the half marathon is 3 hours, 15 minutes, which means runners will need to keep a pace of at least 14:52 per mile or faster. (Runners in the full marathon will have a course time limit of 6 hours, 30 minutes.)
Race Weather & Climate
Set along the banks of the mighty Mississippi River on the eastern edge of central Missouri, the city of St. Louis is known for typically mild to cool weather in the early spring, with relatively even rainfall and other precipitation throughout the year.
On race day (April 10), the average low is 47ºF and the average high is 63ºF.
- 2019 GO! St. Louis Half Marathon Results
- 2018 GO! St. Louis Half Marathon Results
- 2017 GO! St. Louis Half Marathon Results
- 2016 GO! St. Louis Half Marathon Results
- 2015 GO! St. Louis Half Marathon Results
- 2014 GO! St. Louis Half Marathon Results
- $90 and up for the half marathon
- $100 and up for the full marathon
- $60 and up for the 10K
- $50 and up for the virtual event
To reserve your spot in the 2021 running of the GO! St. Louis Marathon, Half Marathon, 10K run/walk or virtual race, register online at RunSignUp.com here.
Official Race Website
Ever run in the GO! St. Louis Half? Share your impressions here, or post your review in the Comments below.