Llanbedr, United Kingdom · Saturday, May 9, 2026

Timed Other timed

Tenacious 10h Endurance Challenge

Race completed

not publishedn/a Distance

1,670 m Climbing

not publishedn/a Grit

We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.

52.8167° N, 4.1000° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

Typical conditions, May

Daytime high 13°C

Night low 9°C

Rainfall Mostly dry

Daylight 15 h 25 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 68 m. Not a forecast.

The Aid Station

Course-specific beta from the community

👟 gear

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

By UltraHub Expert

Gear for this race

Chosen for this trail race with 1,670 m of ascent.

Trail Running ShoesCushioning on trail that is still there in the last quarter.
Race NutritionSelf-supported fuelling between aid stations.
Hydration VestsFlask capacity without the bounce.
GPS WatchesBattery life first — an ultra outlasts most full-GPS modes.

HOKA

Speedgoat 6

Max-cushion trail shoe with Vibram Megagrip outsole, ideal for rocky mountain terrain.

$155 ★★★★★ 4.7

Saucony

Peregrine 14

★★★★★ 4.5

Tailwind

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7

All gear guides →

Course Notes

4.3mi / loop

Similar races

Other trail ultras of the same format.