Inertia Events

Friendly, relaxed and inclusive running events across Dorset, Somerset and the Jurassic Coast.

Choose your next Half Marathon, 10km or trail run below.

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RoadHalf & 10km
Trail10 mile & 10km
FriendlyAll Abilities
TimedRecorded Results and A/G

Upcoming Events

Small, welcoming running events with signed routes, aid stations, timing and a relaxed atmosphere. Pick your event below to view full details and booking information.

WelcomingSuitable for runners, joggers, walkers and jeffers.
Easy to bookStraight forward booking process.
Optional medalsChoose the entry option that works best for you.
Somerset Half and 10km Road Running

Somerset Half / 10km

Sunday 6 September 2026 Half Marathon and 10km Road Run
£30.00 / £22.50
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Bridport Half and 10km Road Running

Bridport Half / 10km

Sunday 13 September 2026 Half Marathon and 10km Road Run
£30.00 / £22.50
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Dorchester Half and 10km Road Running

Dorchester Half / 10km

Sunday 4 October 2026 Half Marathon and 10km Road Run
£30.00 / £22.50
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Jurassic Trail 10 mile and 10km Trail Running

Jurassic 10 mile / 10km

Sunday 11 April 2027 10 mile and 10km Trail Run
£30.00 / £22.50
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Dorset Half and 10km Road Running

Dorset Half / 10km

Saturday 8 May 2027 Half Marathon and 10km Road Run
£30.00 / £22.50
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