Bath, United Kingdom · Sunday, February 21, 2027

Fixed Distance 50K

Two Tunnels Ultra

144 days away

50 km Distance

not publishedn/a Climbing

2.5 est Grit · Entry level

Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.

51.3751° N, 2.3617° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 8.5 hours 10:12 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Tighter than 77% of 50K races. Measured against 1034 races of the same distance. Cut-off calculator →

Field size ~62 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2023 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, February

Daytime high 7°C

Night low 2°C

Rainfall Mostly dry

Daylight 10 h 20 m of light

Regional 2001-2020 average for February — NASA POWER, grid elevation 83 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2023	50km	62	Matt Keeble · 03:41:42	Clare Meraz · 03:59:20
2022	50km	34	Josh Marshall · 04:15:12	Katharine Mee · 04:48:36
2021	50km	27	Adam Nicklen · 03:58:46	Karen Hacker · 04:09:26
2020	50km	24	Mark Gregory · 03:38:22	Jennifer Wood · 04:13:48
2019	50km	51	Mark Gregory · 03:42:28	Penny Brook · 04:00:57
2018	50km	28	Edward Knudsen · 03:27:20	Sarah Thomson · 04:27:45
2017	50km	32	Adrian Scott · 04:02:58	Paula Miotto · 04:20:36

The field grew 82% between 2022 (34) and 2023 (62). 26% of the 2023 field were women.

DUV results for the 2023 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

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 50 km of trail.

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

RunRepeat found the La Sportiva Prodigio Pro to have a secure, locked-in fit due to its premium upper, and also praised the shoe's energetic ride, particularly…

$225 ★★★★★ 4.6

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Skratch Labs

Sport Hydration Mix

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

$20 ★★★★★ 4.5

Nathan

VaporKrar 12L

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

$170 ★★★★★ 4.6

Garmin

Enduro 3

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

$900 ★★★★★ 4.8

All gear guides →

Overview

The Two Tunnels Ultra is a 50k road race in Bath, United Kingdom, held in February. Runners complete a 10km loop five times, with 20km of the race taking place underground in tunnels.

With a time limit of 8.5 hours, the 50k race has a tighter cut-off than 75% of 1011 comparable 50k races. This translates to a cutoff pace of 10.2 minutes per kilometer. The field of 62 finishers in 2023 was larger than 65% of 2651 peer 50k races.

Similar races

Other 50K trail ultras, closest in distance first.