Cycling in Llanelli

Cycling from Llanelli features routes on mainly paved surfaces, including a long National Cycle Network route with some climbing and the shorter Swiss Valley Trail with gentle gradients.

2
Routes: 132 km
In total: 115 km
Longest ride: 1,423 m
Most climbing

Rides in Llanelli

Road · From the map · United Kingdom
National Cycle Network Route (part)
Llanelli, United Kingdom
115 km1,423 m ↑HardGPX
Added Sep 2026
Road · From the map · United Kingdom
Swiss Valley Trail
Llanelli, United Kingdom
17 km157 m ↑EasyGPX
Added Sep 2026

Riding in Llanelli in numbers

Added up from the recorded routes and OpenStreetMap; nothing estimated.

Surface: Paved almost throughout
Roads: 6% of the riding on main roads without a cycle lane · 34 km on cycle paths or lanes
Bail-outs: A railway station or ferry within reach on 2 routes

When to ride in Llanelli

Typical conditions by month, 2015–2024 reanalysis. Bars run from the average daily low to high.

Best months: Jun to Sep.

8°3°J16

9°4°F16

10°4°M18

13°5°A12

16°9°M14

18°11°J15

19°13°J17

19°13°A17

17°12°S16

14°9°O17

11°6°N17

9°5°D19

BestFineHard goingRain days per month under each bar · typical wind 23 km/h from the SW

Cycling guide to Llanelli

Llanelli in Carmarthenshire offers two main cycling routes. The longer National Cycle Network route from the seaside to Fishguard covers 115.2 km with 1423 m of elevation gain, passing through numerous towns and villages including Sandy, Furnace, Felinfoel, Carmarthen, Crymych, and others. This route has mainly paved surfaces, some gravel or unpaved sections, 7.7 km on main roads without cycle lanes and 19.1 km of cycle paths. There are six railway stations near this route, providing some connectivity. The Swiss Valley Trail is a shorter 17 km route passing through many of the same initial places such as Furnace, Felinfoel, and Tumble, with moderate elevation gain but less climbing overall. It features 92% paved surfaces and 15 km of cycle paths, with no main roads lacking cycle lanes. These routes allow cyclists to travel from the coast inland into Carmarthenshire, with the National Cycle Network route extending westwards to Fishguard. They pass a variety of settlements like Sandy, Cross Hands, and Carmarthen, providing options for longer rides or shorter outings on the Swiss Valley Trail. The routes include several climbs, including a 2.5 km climb gaining 152 m with sections of 11.5% gradient on the longer route, and gentler gradients on the Swiss Valley Trail climb.

Terrain

The terrain is mostly rolling with some climbing. The longest climb on the National Cycle Network route is 2.5 km gaining 152 m at an average gradient of 6%, reaching a high point of 283 m along the route. The Swiss Valley Trail features a gentler climb of 4.1 km gaining 89 m with a maximum gradient of 3.7%, reaching 163 m at the high point. Both routes have significant paved surfaces and include sections of cycle paths and minor roads.

Nearby destinations

All destinations

Cycling in Llanelli

Rides in Llanelli

National Cycle Network Route (part)

Swiss Valley Trail

Riding in Llanelli in numbers

When to ride in Llanelli

Nearby destinations

Carmarthen

Llanddowror

Swansea

Cwmllynfell

Caehopkin

Glyncorrwg

Blaengarw

Rhigos

Corntown

Pembroke Dock

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