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Dragon's Back Race
380km380137km137110km110

Dragon's Back Race

380.0km·16400m+
September 6, 06:00 AM
Conwy Castle,
United Kingdom
source

Race Pace Calculator · GPX Analyzer · Trail Finder

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Full calendar: United Kingdom

Dragon's Back Race · Race profile

Distance
380km
Gain
16400m+
Max
1037m
Min
2m

About Dragon's Back Race

Dragon's Back Race is the 380km ultra trail at Dragon's Back Race 2027 (Conwy Castle, United Kingdom). The race starts on September 6, 2027 at 06:00 AM. It starts in Conwy Castle and finishes in Cardiff Castle.

Race strategy

Hold a steady pace and save energy for every section.

  • Steep 40% wall. Control your pace and stay focused.
  • 1184m descent. Go easy, save your quads.
  • The finish is runnable. Save your legs to run it all the way.
  • Long race. Control your HR and effort. Early mistakes cost the most.
  • Ease into the early runnable section, save your quads on the descents until 146km, then run your race pace.
  • Start · 0.0km–1.5km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
  • Settle in · 1.5km–32.6km · 24.4km of runnable trail, high point 1050m, descent of 753m averaging 18%, climb of 812m. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Running pays off here: run wherever you can. Hike the steepest pitches.
  • Work · 32.6km–175km · Descent of 1184m averaging 12%, descent of 995m averaging 10%, descent of 1009m averaging 10%. Plus 8 more climbs and 6 descents. This is where the race is built: steady, solid effort. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. Running pays off here: run wherever you can. Hike the steepest pitches.
  • Fade · 175km–317km · Plus 2 more climbs and 6 descents. Your energy fades, and that's normal: hold a steady effort and stop counting the miles. Climb by heart rate or breathing, not pace. Running pays off here: run wherever you can. Your heart rate drifts down on its own: don't chase your early-race numbers, go by feel.
  • Home · 317km–382km · 64.7km of runnable trail. No heroics: settle back into your own effort and hold it to the line. Running pays off here: run wherever you can.

Course

The course climbs 16400m+. With 43m/km of climbing, this is a rolling, mostly runnable course. By gradient, 33% of the distance is uphill, 34% downhill and 33% flat. The longest climb runs 8.5km at an average 10.8% grade (926m of vertical). The longest descent runs 10.9km at an average 8.6% grade (943m of vertical). The steepest climb averages 49.4% over 0.4km. The steepest descent drops at 49.9% over 0.2km.

Poles

Trekking poles are strongly recommended: about 32.4km of the course is steep enough for them to pay off.

Quad damage

Quad damage risk is extreme (index 91 of 100): more runnable descent than most 100-milers. Without downhill preparation the quads give out long before the finish.

  • Ease into the early runnable section, save your quads on the descents until 146km, then run your race pace.
  • #3 · 24.4–28.5 km · 753 m D−, -18.3% · 353.3 km ahead → control
  • #6 · 32.6–37.2 km · 677 m D−, -14.7% · 344.6 km ahead → control
  • #1 · 42.4–52.3 km · 1184 m D−, -11.9% · 329.5 km ahead → control
  • #2 · 59.3–69.2 km · 995 m D−, -10.0% · 312.6 km ahead → control
  • #7 · 81.5–87.1 km · 453 m D−, -8.1% · 294.7 km ahead → control
  • #5 · 94.1–105.0 km · 943 m D−, -8.6% · 276.8 km ahead → control
  • #4 · 121.2–131.1 km · 1009 m D−, -10.3% · 250.8 km ahead → control
  • #8 · 142.1–145.9 km · 430 m D−, -11.4% · 236.0 km ahead → control
  • 312.2–317.2 km · 527 m D−, -10.7% · 64.7 km ahead → your pace
  • Plus 6 more notable descents not listed: your pace.

This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Dragon's Back Race.

Other distances of Dragon's Back Race 2027Dragon's Tail (137km)·Dragon's Fire (110km)

Other editions of Dragon's Back Race2026

Official websitewww.dragonsbackrace.com