Upcoming Races Near O'fallon, MO

Name: 2026 Biz Dash 5K presented by World Wide Technology
Start: 2026-05-07
End: 2026-05-07
Location: St. Louis

Time Travel Half-Marathon (and 5k/10k) - St. Louis

Maryland Heights, MO

Saturday, February 21st, 2026

Featured

1 Mile

10K

View details for race Time Travel Half-Marathon (and 5k/10k) - St. Louis

Want to feature your race?

Get your race seen first by thousands of runners

Learn More

Learn how to feature your race

Castlewood Cup

Ballwin, MO

Saturday, February 21st, 2026

15K

Trail

View details for race Castlewood Cup

Couch Tater Run

Maryland Heights, MO

Sunday, February 22nd, 2026

1 Mile

10K

View details for race Couch Tater Run

Shrewsbury Thrifty Fifty

Saint Louis, MO

Saturday, February 28th, 2026

View details for race Shrewsbury Thrifty Fifty

The FROZEN STICK 5 Mile and Half Marathon Trail...

Glencoe, MO

Saturday, February 28th, 2026

Half

Trail

View details for race The FROZEN STICK 5 Mile and Half Marathon Trail Run

2026 Winter Flakes 5k

De Soto, MO

Saturday, February 28th, 2026

1 Mile

View details for race 2026 Winter Flakes 5k

Brian J. Smith 2nd Annual CHAMP 5K

Saint Louis, MO

Sunday, March 1st, 2026

View details for race Brian J. Smith 2nd Annual CHAMP 5K

START 5K & 10K

Saint Louis, MO

Saturday, March 7th, 2026

View details for race START 5K & 10K

11th Annual Holy Infant Shamrock Shuffle

Ballwin, MO

Saturday, March 7th, 2026

1 Mile

View details for race 11th Annual Holy Infant Shamrock Shuffle

Michelob ULTRA St. Patrick's Day Parade Run

St. Louis, MO

Saturday, March 14th, 2026

View details for race Michelob ULTRA St. Patrick's Day Parade Run

Creve Coeur St. Paddy's Half Marathon, 10K & 5K...

Maryland Heights, MO

Saturday, March 14th, 2026

Half

10K

View details for race Creve Coeur St. Paddy's Half Marathon, 10K & 5K Run/Walk

Waterloo Citizens for a Pool St. Paddy's Day 5K

Waterloo, IL

Saturday, March 14th, 2026

View details for race Waterloo Citizens for a Pool St. Paddy's Day 5K

Wash U Olin Veterans Association Run

Saint Louis, MO

Saturday, March 14th, 2026

1 Mile

View details for race Wash U Olin Veterans Association Run

Chesterfield Shamrock 5k/10k & Leprechaun Fun Run

Chesterfield, MO

Saturday, March 14th, 2026

10K

1 Mile

View details for race Chesterfield Shamrock 5k/10k & Leprechaun Fun Run

Lucky Leprechaun 5K and Kids Rainbow Dash

Belleville, IL

Saturday, March 14th, 2026

View details for race Lucky Leprechaun 5K and Kids Rainbow Dash

Defiance St. Patricks Day 5k

Defiance, MO

Saturday, March 14th, 2026

Trail

View details for race Defiance St. Patricks Day 5k

The Saint PATRICKS day 5K/10K Fun Run

Grover, MO

Saturday, March 14th, 2026

View details for race The Saint PATRICKS day 5K/10K Fun Run

Florissant St. Patrick's Day 5K Run

Florissant, MO

Sunday, March 15th, 2026

View details for race Florissant St. Patrick's Day 5K Run

Go Green St. Paddy's Day Run

Maryland Heights, MO

Saturday, March 21st, 2026

1 Mile

10K

View details for race Go Green St. Paddy's Day Run

American Bottoms 100

Columbia, IL

Saturday, March 21st, 2026

Trail

Fast

View details for race American Bottoms 100

Time to Paddy 5k/10k & Lucky 13.1 - St Louis

St Peters, MO

Sunday, March 22nd, 2026

10K

Half

View details for race Time to Paddy 5k/10k & Lucky 13.1 - St Louis

Time to Paddy 5k/10k & Lucky 13.1 - St Louis

St Louis, MO

Sunday, March 22nd, 2026

10K

Half

View details for race Time to Paddy 5k/10k & Lucky 13.1 - St Louis

Schon Park 3/6/9 Endurance Runs

Glen Carbon, IL

Saturday, March 28th, 2026

View details for race Schon Park 3/6/9 Endurance Runs

Glendale, MO Firehouse Run

Saint Louis, MO

Saturday, March 28th, 2026

10K

1 Mile

View details for race Glendale, MO Firehouse Run

GO! St. Louis Read, Right & Run Marathon®

St. Louis, MO

Saturday, April 4th, 2026

1 Mile

View details for race GO! St. Louis Read, Right & Run Marathon®

Kids & Cops Doughnut Run-5K/1Mile Fun Run

Granite City, IL

Saturday, April 11th, 2026

1 Mile

View details for race Kids & Cops Doughnut Run-5K/1Mile Fun Run

Students on the GO!

Saint Louis, MO

Saturday, April 11th, 2026

Half

View details for race Students on the GO!

Greater St. Louis Marathon

St. Louis, MO

Saturday, April 11th, 2026

Marathon

Half

1 Mile

View details for race Greater St. Louis Marathon

Brain Bolt 5K

Maryland Heights, MO

Sunday, April 12th, 2026

1 Mile

View details for race Brain Bolt 5K

Good News Brewing 5K Kicks on Route 66

Wildwood, MO

Thursday, April 16th, 2026

View details for race Good News Brewing 5K Kicks on Route 66

DoNot Stop Half Marathon (5k/10k) - St. Louis

Maryland Heights, MO

Saturday, April 18th, 2026

10K

1 Mile

View details for race DoNot Stop Half Marathon (5k/10k) - St. Louis

Cardinals 5K

Saint Louis, MO

Saturday, April 18th, 2026

View details for race Cardinals 5K

Green Park Viking Dash

Saint Louis, MO

Saturday, April 18th, 2026

1 Mile

Trail

View details for race Green Park Viking Dash

Eckert's Belleville Farm Wine Run 5k

Belleville, IL

Saturday, April 18th, 2026

View details for race Eckert's Belleville Farm Wine Run 5k

13th Annual VFW Post 805 .1K

O Fallon, IL

Saturday, April 18th, 2026

View details for race 13th Annual VFW Post 805 .1K

WashU PT Run for Research 5K Run/Walk

Saint Louis, MO

Sunday, April 19th, 2026

View details for race WashU PT Run for Research 5K Run/Walk

St. Louis - HFTC 5k

St. Louis, MO

Sunday, April 19th, 2026

View details for race St. Louis - HFTC 5k

Classic 107.3 Beat Beethoven 5K - St. Louis

St. Louis, MO

Sunday, April 19th, 2026

1 Mile

View details for race Classic 107.3 Beat Beethoven 5K - St. Louis

STL Work Zone Awareness Run

Chesterfield, MO

Saturday, April 25th, 2026

1 Mile

View details for race STL Work Zone Awareness Run

Laura's Run 4 Kids 5K & Family Fun Run

Saint Louis, MO

Saturday, April 25th, 2026

1 Mile

View details for race Laura's Run 4 Kids 5K & Family Fun Run

High Ridge Firehouse 5k for Autism

High Ridge, MO

Saturday, April 25th, 2026

View details for race High Ridge Firehouse 5k for Autism

Run 4 Recovery

Moro, IL

Saturday, April 25th, 2026

View details for race Run 4 Recovery

SAAPM 5K

Scott Air Force Base, IL

Thursday, April 30th, 2026

View details for race SAAPM 5K

BKM 4 Life Black Maternal Health 5K

Bridgeton, MO

Saturday, May 2nd, 2026

View details for race BKM 4 Life Black Maternal Health 5K

The SPRING SPRUNG 5k-10k 10K Ruck and Half Mara...

Ballwin, MO

Saturday, May 2nd, 2026

10K

Half

Trail

Fast

View details for race The SPRING SPRUNG 5k-10k 10K Ruck and Half Marathon

Sam-a-Palooza Family Walk & Run

Saint Louis, MO

Saturday, May 2nd, 2026

View details for race Sam-a-Palooza Family Walk & Run

Drink MO Wine Run - 1 Mile, 5K, 10K & Half Mara...

Augusta, MO

Saturday, May 2nd, 2026

1 Mile

10K

Trail

View details for race Drink MO Wine Run - 1 Mile, 5K, 10K & Half Marathon

Fiesta de Mayo 5k - Battling Cancer Together

Saint Louis, MO

Sunday, May 3rd, 2026

View details for race Fiesta de Mayo 5k - Battling Cancer Together

St Louis Track Club FREE Member Appreciation 5k...

Saint Louis, MO

Sunday, May 3rd, 2026

1 Mile

View details for race St Louis Track Club FREE Member Appreciation 5k and 1-Mile Fun Run/Walk

2026 Biz Dash 5K presented by World Wide Techno...

St. Louis, MO

Thursday, May 7th, 2026

View details for race 2026 Biz Dash 5K presented by World Wide Technology

Explore more in O'fallon, MO

Distances:

5K 10K Half Marathon Marathon

Months:

February March April

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Missouri races

Don't see your race? Add it!

Add Your Race (Free)