Biri, Norway · Friday, May 1, 2026

Backyard

Biri Backyard ultra 50M

Race completed

not publishedn/a Distance

59 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.

60.9566° N, 10.6095° E© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

Typical conditions, May

Daytime high 12°C

Night low 3°C

Rainfall Showers likely

Daylight 16 h 04 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 524 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 59 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.
HeadlampsA 12 h limit puts you out there after dark.
GPS WatchesBattery life first — an ultra outlasts most full-GPS modes.

Asics

Gel Trabuco 12

★★★★★ 4.5

Topo Athletic

Traverse

★★★★★ 4.5

Skratch Labs

Sport Hydration Mix

Clean electrolyte drink mix with real fruit flavor. Low sugar.

$20 ★★★★★ 4.5

Salomon

ADV Skin 12

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

$180 ★★★★★ 4.8

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

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

Lap of 6,7km

Similar races

Other trail ultras of the same format.