Ultra Running Hub New Haven, CT, United States · Sunday, May 3, 2026
The Blue 2 Blue Challenge
What the course asks
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, May
Regional 2001-2020 average for May — NASA POWER, grid elevation 149 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a mountain course. Poles are highly recommended for the sustained climbs.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail with 2,800 m of ascent.
- Trail Running Shoes56 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition50 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles2,800 m of ascent to walk up.
- GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.
Course Notes
This race is a Graduate Level run, meaning you will be on some of CT's most technical and gnarly trails: first the Regicides (West Rock's "Blue" trail) and then The Quinnipiac Trail (another of CT's famed Blue trails).
Similar races
Other 50K trail ultras, closest in distance first.