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Old St Mellons

Old St Mellons

The best MTB trails around Old St Mellons

4.3

(55)

1,203

riders

rides

Mountain biking around Old St Mellons is a great to experience more of the landscape. But it’s often tough to know where to start. To help you find the best mtb routes around Old St Mellons, here are the best rides!

Last updated: October 24, 2025

5.0

(2)

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1. Blackweir Bridge – View of Castell Coch loop from Cathays

24.3km

01:28

210m

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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Easy

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2. Mynydd Rudry loop from Machen

17.2km

01:30

380m

Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Intermediate

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3. Mynydd Rudry loop from Trethomas

27.1km

02:06

550m

Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Intermediate

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4. View of Castell Coch – Taff Trail Junction loop from Rumney

51.1km

02:44

260m

Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Intermediate

5.0

(3)

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5. Avalanche – View of the Rolling Hills loop from Machen

20.2km

02:10

670m

Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Intermediate

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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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The best MTB trails around Old St Mellons

1. Blackweir Bridge – View of Castell Coch loop from Cathays

2. Mynydd Rudry loop from Machen

3. Mynydd Rudry loop from Trethomas

4. View of Castell Coch – Taff Trail Junction loop from Rumney

5. Avalanche – View of the Rolling Hills loop from Machen

Most popular routes around Old St Mellons

Most popular attractions around Old St Mellons

Get inspired with the komoot mobile app

Explore more

Get ready to conquer new peaks

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