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United Kingdom
Wales
South Wales
Port Talbot

Sardis Hill – Pontrhydyfen Viaduct loop from Port Talbot Parkway

Routes
Road cycling routes
United Kingdom
Wales
South Wales
Port Talbot

Sardis Hill – Pontrhydyfen Viaduct loop from Port Talbot Parkway

Moderate

22

riders

Sardis Hill – Pontrhydyfen Viaduct loop from Port Talbot Parkway

01:02

22.4km

220m

Road cycling

Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is accessible with public transport.

Last updated: May 12, 2026

Tips

Includes a segment in which cycling is not permitted

After 4.82 km for 84 m

Waypoints

A

Start point

Train Station

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1

8.59 km

View of Glynneath

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2

9.78 km

Cimla Climb

Highlight (Segment) • Climb

3

13.0 km

Sardis Hill

Highlight (Segment) • Climb

Heading east to west on the B4287 from Pontrhydyfen to Neath, Sardis Hill kicks up from the junction with Ton Mawr Road and within a hundred metres hits around 14%. The pitch of the slope is further accentuated by the tall brick walls either side which are remnants of an abandoned railway bridge.

Continuing to rise harshly past a couple of houses it’s not too long before you reach the gentle middle section. Take the chance to catch your breath here as before you know it the second ramp arrives to take you to the top.

Longer than the first hard stretch but not quite as steep it begins abruptly then fades as you approach the summit. Passing over a small bridge, the trees either side recede and the houses of Cimla begin before you arrive at the top at the small crossroads.

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4

15.7 km

Pontrhydyfen Viaduct

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Pontrhydyfen is a small former coal mining community at the confluence of the River Afan and the Afon Pelenna. It is distinguished by two large 19th-century bridges that span the valley: a railway viaduct (the red bridge) and a former aqueduct, known as Y Bont Fawr ("The Big Bridge").

Tip by

5

16.6 km

Afan River Cycle Path

Highlight (Segment) • Viewpoint

Mostly level or gentle down slope.

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B

22.4 km

End point

Train Station

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Way Types & Surfaces

Way Types

9.94 km

8.04 km

2.71 km

1.12 km

417 m

177 m

Surfaces

20.9 km

901 m

372 m

222 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (160 m)

Lowest point (10 m)

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Weather

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Sunday 24 May

29°C

17°C

0 %

Additional weather tips

Max wind speed: 17.0 km/h

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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