4.4
(156)
26,788
runners
689
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: August 16, 2026
4.0
(1)
23
runners
23.0km
02:25
200m
200m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
16
runners
8.51km
00:53
70m
70m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Sign up for free
5.0
(1)
14
runners
7.67km
00:48
40m
40m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
11
runners
4.65km
00:30
50m
50m
Easy run. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
14
runners
7.68km
00:49
60m
60m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
Adjoining Roath Park Lake is a wild garden with nice pathways and is a meeting place for many types of birds
0
0
A huge garden with flowerbeds as far as the eye can see. The roses are currently in season and the variety and quality is outstanding. Thank you to all those who maintain this flower Paradise ❤️
0
0
Roath Park Lake has stunning vistas and tree-lined pathways. Lots of birds relax on the shores.
1
0
lovely part of Cardiff, particularly on a sunny day. good spot for a stroll but very busy with families and people walking so not very suited for cycling
0
0
Wonderful cafe perched right over the edge of the lake - feels like being in a rowboat right on the lake! Enjoying a generous baked potato and chilli con carne marks a great end to a wonderful hike.
0
0
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.
0
0
Whatever you do is don't cycle around the reservoir, got told off and abusively shouted at.
0
0
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.


Browse the best Running Trails & Routes in other regions.