Rochester, Kent, United Kingdom · Saturday, June 5, 2027

Fixed Distance 50K

Three Castles 50km

274 days away
50 km Distance
200 m Climbing
2.8 Grit · Entry level
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51.3910° N, 0.5020° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 4 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 9 hours 10:48 min/km average. Generous. Walkable throughout for most of the field. Tighter than 72% of 50K races. Measured against 982 races of the same distance. Cut-off calculator →
Field size ~380 Large. Rarely out of sight of another runner.

DUV results for the 2026 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, June

Daytime high 19°C
Night low 12°C
Rainfall Mostly dry
Daylight 16 h 23 m of light

Regional 2001-2020 average for June — NASA POWER, grid elevation 38 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a fast & flat course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert
👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 50 km of trail with 200 m of ascent.

  • Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 50 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 50 km, without the bounce.
  • GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

La Sportiva

Prodigio Pro

$225 ★★★★★ 4.6

Adidas

Terrex Speed Ultra

★★★★★ 4.5

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Garmin

Enduro 3

Ultra-endurance GPS watch with solar charging and 300+ hour battery in GPS mode.

$900 ★★★★★ 4.8
All gear guides →

Course Notes

This breathtaking race on mixed terrain takes runners along the river Medway, passing through idyllic villages, picturesque countryside and most importantly, three stunning medieval castles. The route is mainly on shared towpath and trails.

Similar races

Other 50K trail ultras, closest in distance first.