4.5
(157)
26,397
runners
10
runs
Jogging around Old St Mellons offers a variety of routes through a landscape characterized by green spaces, local parks, and residential areas. The terrain is generally gentle, with low elevation gains, making it suitable for various fitness levels. Runners can explore paths alongside Pentwyn Lake and through areas like Parc Coed y Cwar and Rumney Hill Gardens, providing accessible options for daily exercise.
Last updated: May 9, 2026
5.0
(1)
14
runners
7.67km
00:48
40m
40m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
10
runners
18.7km
02:00
250m
250m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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9
runners
10.8km
01:09
110m
110m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
8
runners
10.8km
01:09
120m
120m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
11
runners
8.89km
00:56
80m
80m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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multiple well kept trails around the woodlands , but don't go cycling around the reservoir as I found out there is no cycling, even though there are no signs , i got abuse from aggressive walkers about it.
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narrow wooden bridge with water running over the pathway
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Whatever you do is don't cycle around the reservoir, got told off and abusively shouted at.
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£8.50 on weekends and £6.50 on weekdays per person.
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to get past the gate, go through the bushes. OS maps have not been updated as the lakes are on private land, got told off for cycling around during the daytime.
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currently derelict, but recently sold in November 2021
1
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Old St Mellons offers a wide selection of running routes, with over 700 options recorded on komoot. These range from easy jogs to more challenging trails, catering to various fitness levels.
Yes, Old St Mellons has numerous easy running routes perfect for beginners. One excellent option is the Home loop from Pentwyn, which is 4.7 miles (7.6 km) long and features gentle terrain, making it ideal for a relaxed run.
For those looking for longer runs, Old St Mellons provides several routes. The Pentwyn Lake – Parc Coed y Cwar loop from Pentwyn is a popular choice, covering 7.0 miles (11.3 km) through parkland and alongside the lake.
The running routes in Old St Mellons are highly rated by the komoot community, with an average score of 4.5 stars from over 160 reviews. Runners often praise the accessible park paths, scenic lakeside trails, and urban green corridors that provide varied and enjoyable experiences.
Many of the running routes in Old St Mellons are circular, offering convenient starting and ending points. Examples include the Pentwyn Lake loop from Llanrumney, a 4.1 miles (6.6 km) path, and the Rumney Hill Gardens loop from Llanrumney, which is 5.3 miles (8.5 km).
The terrain in Old St Mellons is generally gentle, characterized by low elevation gains. You can expect to run on paths through green spaces, local parks, and residential areas, often alongside features like Pentwyn Lake and through areas such as Parc Coed y Cwar and Rumney Hill Gardens.
While Old St Mellons itself is known for its green spaces, nearby attractions offer additional points of interest. You can find highlights like Roath Park Lake and the Scott Memorial Lighthouse or explore the Lisvane and Llanishen Reservoirs for picturesque views during your run.
Yes, the generally gentle terrain and accessible paths in Old St Mellons make many routes suitable for families. Look for routes through local parks and green spaces, which often provide safe and enjoyable environments for all ages. The Running loop from Marshfield is a moderate 4.1 miles (6.6 km) option that could be suitable for active families.
Parking availability varies by starting point. For routes originating in areas like Pentwyn or Llanrumney, you can often find local street parking or designated car parks near public parks and community facilities. It's advisable to check specific starting points for the best parking options.
Old St Mellons is generally well-connected by local bus services, making it accessible for runners using public transport. Many routes start near residential areas or parks that are within walking distance of bus stops, allowing you to reach trailheads conveniently.
Old St Mellons offers pleasant running conditions throughout much of the year. Spring and autumn provide mild temperatures and vibrant scenery, while summer is great for early morning or evening runs. Even in winter, the low elevation gains mean routes are generally accessible, though paths might be damp.


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