How far is the Race to the Stones?

The Race to the Stones offers 4 distances: 100K Non-Stop (62.1 miles), 100K Over Two Days (62.1 miles), Thames Valley 50K (31.1 miles), Ridgeline 50K (31.1 miles).

How much climbing is in the Race to the Stones?

The 100K Non-Stop has 1,103 m of ascent. The 100K Over Two Days has 1,103 m of ascent. The Thames Valley 50K has 593 m of ascent. The Ridgeline 50K has 509 m of ascent.

How hard is the Race to the Stones?

100K Non-Stop: Expert. 100K Over Two Days: Expert. Thames Valley 50K: Very Hard. Ridgeline 50K: Very Hard. TRP grades come from distance and climb measured off the course file, not from the organiser.

What are the cut-offs for the Race to the Stones?

Overall time limits — 100K Non-Stop: 30h, 100K Over Two Days: 30h, Thames Valley 50K: 15h, Ridgeline 50K: 15h.

When is the next Race to the Stones?

Sat, 10 Jul 2027. Entries open.

Threshold Trail Series Race to the Stones

Lewknor, OxfordshireSat, 10 Jul – Sun, 11 Jul 2027

A hundred kilometres of the Ridgeway, Britain's oldest road, from Lewknor to the standing stones at Avebury — in one go or split over two days.

Distance	Ascent	Per km
100K Non-Stop	1,103 m	11 m
100K Over Two Days	1,103 m	11 m
Thames Valley 50K	593 m	12 m
Ridgeline 50K	509 m	10 m

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Nobody has reviewed this one yet

No reviews of the Race to the Stones, and nothing on what people wore. Both are things no organiser publishes and every runner wants before they enter — how it actually went, and what was on your feet.

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EXPERT

TRP grade · E5·T2

30h cut-off, which needs 18:00/km

Start time not confirmed yet — check with the organiser.

Partner · affiliate policy

How to enter

Sat, 10 Jul – Sun, 11 Jul 2027 · Entries open

Enter on their website ↗

Entries are handled by Let's Do This, not by us. We take nothing for sending you there.

Add to your calendar · as an all-day entry, until the start time is confirmed

Common questions

: The Race to the Stones offers 4 distances: 100K Non-Stop (62.1 miles), 100K Over Two Days (62.1 miles), Thames Valley 50K (31.1 miles), Ridgeline 50K (31.1 miles).
: The 100K Non-Stop has 1,103 m of ascent. The 100K Over Two Days has 1,103 m of ascent. The Thames Valley 50K has 593 m of ascent. The Ridgeline 50K has 509 m of ascent.
: 100K Non-Stop: Expert. 100K Over Two Days: Expert. Thames Valley 50K: Very Hard. Ridgeline 50K: Very Hard. TRP grades come from distance and climb measured off the course file, not from the organiser.
: We haven't confirmed the marking on the Race to the Stones with Threshold Trail Series. Check their race information before you enter rather than assuming it either way.
: We don't hold a compulsory kit list for the Race to the Stones. Threshold Trail Series confirm mandatory kit in their race information, usually in the final instructions.
: Overall time limits — 100K Non-Stop: 30h, 100K Over Two Days: 30h, Thames Valley 50K: 15h, Ridgeline 50K: 15h.
: We don't hold a checkpoint list for the Race to the Stones. What's on the table varies a lot between races, so check the Threshold Trail Series race information rather than turning up expecting food.
: Not yet — we don't hold a course file for the Race to the Stones. Some organisers only send the GPX to entrants. If we get one, it goes up free, with no sign-up.
: Sat, 10 Jul 2027. Entries open.