A trail runner on a grassy ridge above a sea of clouds

Race to the Stones

Three formats are offered: 100km non-stop, 100km over two days, and 50km.

Prepare for Race to the Stones

A plan built from your answers and your race date.

trail training plan

Race to the Stones follows the Ridgeway, the ancient track crossing Oxfordshire and Wiltshire towards the standing stones at Avebury. Starting from Lewknor, the route runs along broad byways, farmland ridges and open paths through English countryside. The going is rolling and rarely technical, but it is exposed to sun and wind for long stretches.

The two-day option opens the full distance to runners who would not tackle 100km in one push.

The formats

3 formats on the program.

Format	Distance
100 km non-stop	62 mi
100 km en 2 jours	62 mi
50 km (jour 1)	31 mi

Organizer information, checked on September 21, 2026 · thresholdtrailseries.com

When to start

A build for this distance usually runs 12 to 24 weeks. Counted back from race day, that puts the start somewhere between January 18, 2027 and April 12, 2027.

These ranges are working conventions, not a research finding — no trial has compared plan lengths against each other. What matters more is that the plan was built for the weeks you actually have, rather than shrunk down from a longer one.

How to choose your start date

When to start

January 18, 2027

→ April 12, 2027

Worth reading before you enter

Races and distances Trail distances: what changes off the road Distance stops being the useful number. What decides a trail race is how long you are out, how much you climb, and how much the descents have wrecked your legs by the end. Read Training Eating and drinking: what’s proven, what isn’t This is where confident advice most often runs ahead of the evidence. Some of it is well tested. Some is opinion wearing a number. And one common habit can kill you. Read Races and distances When to start preparing your race Most plans fail before the first session, because the block started too late and everything had to be squeezed. Counting back from the date is the dullest and most useful thing you will do. Read

Questions

What is the date of Race to the Stones in 2027?

Race to the Stones is run on Saturday, July 10, 2027 from Lewknor to Avebury (Ridgeway). Date published by the organizer, checked on September 21, 2026.

What formats does Race to the Stones offer?

There are three: 100km non-stop, 100km over two days with an overnight stop, and 50km on the first day only. The route runs from Lewknor to the Avebury stones along the Ridgeway.

Is Race to the Stones good for a first ultra?

The rolling Ridgeway terrain and the two-day option make it a sensible route into 100km. The 50km is the most manageable entry point if you are stepping up to long distance for the first time.

Other races

This list keeps growing; it draws no line. A race that is missing is prepared for in exactly the same way.

Edale → Kirk Yetholm (Pennine Way) · United KingdomUltra Montane Winter Spine Jan 9 The full race covers 431km, with shorter Challenger and Sprint formats alongside it. Cornish coast · United KingdomUltra Arc of Attrition by UTMB Jan 22 The Arc of Attrition by UTMB is a winter ultra run along the Cornwall coast path in England. 1 km to 173 Worthing → Eastbourne · United KingdomUltra Centurion South Downs Way 50 Apr 10 The Centurion South Downs Way 50 covers the eastern half of the South Downs Way in Sussex, from Worthing Your race is not here? Tell us about your race You can prepare for it all the same. Any race, anywhere, and even a goal without a race.

Your race is on the calendar. Your plan should be too.

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