Logo

The Blue 2 Blue Challenge

West Rock, United States • 3 May 2026

Event overview

The Blue 2 Blue Challenge is listed as a 50K trail event in New Haven, Connecticut, with an out-and-back course starting at West Rock Playground. Registration is managed by a waitlist and entry is contingent on the organizer vetting prior race results; the organizer requires a recent qualifying trail 50k or a comparable technical race within the previous 12 months.

Course

The route follows blue-blazed trails, linking the Regicides Trail (West Rock) and the Quinnipiac Trail. The course includes rocky, technical sections, climbs such as High Rock and Mt. Sanford (around mile 12), and a turnaround near Cornwall Avenue in Prospect (approximately mile 16.4). The finish is reported at Amrhyn Field at about mile 32.8. Total climbing is stated as about 6,350 feet. The organizer describes the course as "graduate level" and emphasizes technical terrain.

Aid, rules and logistics

Aid stations are listed at about miles 4, 8.1, 11.5, 16.4 (drop bag), 21, 24.5 and 28.5; water-only stations are indicated at miles 4 and 28.5. One drop bag will be shuttled to the turnaround and should be compact. The event enforces a strict 10-hour overall cutoff, specific intermediate cutoffs (reach mile 16 in 4.5 hours and mile 24 in 7 hours), and prohibits pacers and crews; receiving unauthorized aid can result in disqualification. Hoodies and trucker hats are noted as available items. Visit the organization's website for the most recent information.

United States Connecticut West Rock

Race information

Registration
50 km
50k
Visit the organization's website for the most recent information.
Trail runs nearby

Frozen Heart 900

Rockfall

Join the Frozen Heart 900, a free grassroots winter loop in Rockfall CT where runners take on a 15 hour challenge around a 2.2 mile trail loop. Self supported format with a heated meeting room for warming, so bring headlamps and carpool.

Sleeping Giant Trail Runs

Hamden

Run Sleeping Giant State Park on scenic, challenging trails with 25K and 50K options. Tackle runnable miles, rocky singletrack and a steep scramble to sweeping views, while supporting the park through registration proceeds.

Lake Mohegan Women's Trail Race

Fairfield

Women focused trail run at Lake Mohegan offering a runnable 5K loop, a 10K two lap option and a 4 hour loop challenge. Expect scenic trails, medals for finishers and post race snacks; nonbinary runners are welcome.

Mine Hill Half Marathon

Roxbury

Run the Mine Hill Half Marathon from Mine Hill Distillery, a scenic course of rolling climbs, gravel and paved roads, with a downhill second half beside the Shepaug River. Celebrate postrace with food, drinks and distillery samples.