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Running Calendar near Swansea 2025-2026

Explore the top running races near Swansea for 2025-2026! We've gathered 54 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
February 2026
Feb
28
Sa

Shrewsbury Thrifty Fifty
1 hr 50 km 50 mi
March 2026
Mar
6
Fr

Queeny Backyard Ultra
Backyard Ultra 4 mi
Mar
14
Sa

Creve Coeur St. Paddy's Half Marathon
5 km 10 km Half Marathon
Mar
15
Su

Florissant St. Patrick's Day 5K Run
5 km
Mar
21
Sa

American Bottoms 100
55 mi 110 mi
Mar
22
Su

Bodies Race Company - St. Louis
5 km 10 km 13 mi
Mar
28
Sa

Double Chubb 50K
Trail Run 8 mi 25 km 50 km
Mar
28
Sa

Schon Park 9 Endurance Run
Backyard Ultra 3 hr 6 hr 9 hr
Mar
28
Sa

Kit Crawl 10K
5 km 10 km
April 2026
Apr
4
Sa

GO! St. Louis Marathon
5 km
Apr
11
Sa

Greater St. Louis Marathon
5 km 10 km Half Marathon Marathon
Apr
11
Sa

Kids & Cops Doughnut Run 5K
5 km
Apr
11
Sa

Walk with a Friend
5 km 10 km
Apr
11
Sa

Students on the GO!
10 km 13 mi
Apr
18
Sa

DoNot Stop Half Marathon - St. Louis
5 km 10 km Half Marathon
Apr
18
Sa

Green Park Viking Dash
Trail Run 5 km
Apr
18
Sa

Eckert's Belleville Farm Wine Run 5k
5 km
Apr
19
Su

Beat Beethoven 5K - St. Louis
5 km
May 2026
May
2
Sa

Annual Law Day 5K
5 km
May
16
Sa

Bodies Race Company - St. Louis
5 km 10 km Half Marathon