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Half Marathon Calendar near Tongwynlais 2025-2026

Explore the top half marathons near Tongwynlais for 2025-2026! We've gathered 31 exciting races in the area. Check out our detailed list below to find your next local race.

August 2025
Aug
16
Saturday

Chepstow Running Festival Half Marathon

5 km 10 km 21 km
Aug
30
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... 42 km 50 km
September 2025
Sep
7
Sunday

Bridgwater Half Marathon

5 km 10 km 21 km
Sep
20
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... 42 km 50 km
October 2025
Oct
5
Sunday

Cardiff Half Marathon

21 km
Oct
5
Sunday

Quantock Hills Half Marathon

Trail Run 21 km
Oct
18
Saturday

Afan Forest Trail Half Marathon

10 km 21 km
Oct
18
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... 42 km 50 km
Oct
25
Saturday

Giddy Horse Half Marathon, Trail, & Steeplechase Obstacle Course Races

Trail Run Obstacle Run 4 mi 8 mi 21 km
November 2025
Nov
8
Saturday

Beacons Ultra

Trail Run 13 mi 26 mi 49 mi
Nov
15
Saturday

Margam Trail Races

Trail Run 5 km 10 km 21 km
Nov
16
Sunday

Cardiff Trail Half Marathon

Trail Run 21 km
Nov
22
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... 42 km 50 km
December 2025
Dec
6
Saturday

Secret Santa Series

Trail Run 14 km 10 mi 13 mi
Dec
13
Saturday

Celtic Trail Races

Trail Run 13 mi 26 mi 34 mi
Dec
20
Saturday

Nightmare before Xmas Trail ½ Marathon

Trail Run 21 km
Dec
21
Sunday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... 42 km 50 km
January 2026
Jan
24
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... 42 km 50 km
Jan
25
Sunday

Chepstow Running Festival Half Marathon

5 km 10 km 21 km
February 2026
Feb
1
Sunday

The Cardiff Half Marathon Winter Warmer Run

5 km 10 km 21 km
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