The Sleeping Giant Trail Runs return to Hamden, Connecticut on April 4th, offering a challenging experience for runners up to the task of conquering steep climbs and technical trails. The event takes place within Sleeping Giant State Park, a renowned outdoor destination known for its diverse trail system that ranges from smooth carriage roads to rocky singletrack paths. Participants will face over 30 miles of terrain inside the park, with significant elevation gains including an arduous climb up the head wall.
50K 50K • Start: 07:00:00 • Fee: $85.00
25K 25K • Start: 08:00:00 • Fee: $75.00
On race morning at dawn, runners can expect firm but slightly soft trails underfoot, ideal conditions for gripping shoes and steady footing on technical sections. The UV index is expected to be moderate at a level 5, suggesting that participants should apply sunscreen and consider wearing protective clothing. There's also a low risk of precipitation, making the race likely dry yet cool enough in the early hours as temperatures hover around 7°C. This event has been running for several years now with growing popularity; over 250 runners registered each year since its inception in 2025. Each participant contributes to the cause by supporting the Sleeping Giant Park Association through their registration fees, helping maintain and enhance this cherished Connecticut parkland. The race is known not only for its challenging course but also for the camaraderie among participants who share a passion for conquering nature's toughest trails. The Sleeping Giant Trail Runs features two main distances: a 50K loop that challenges runners with over 3 kilometers of vertical gain, and a more manageable yet still rigorous 25K option. Both courses begin at the Pavilion inside Sleeping Giant State Park on Mt. Carmel Avenue. Runners start by tackling mostly runnable rolling singletrack for about five miles before hitting an intense rock scramble climb near the midpoint of their journey. Registration is handled exclusively through the event's online portal available at https://ultrasignup.com/register.aspx?did=137962, where participants can secure a spot and pay either $85.00 for the 50K or $75.00 for the 25K race day experience. Bib pickup is scheduled on April 3rd from 4:00 PM to 7:00 PM at Sleeping Giant State Park Pavilion, where runners should bring photo ID and confirmation of their registration status. The start location address for all participants is 200 Mt Carmel Avenue in Hamden, Connecticut. Runners must be over the age of sixteen years old on race day due to safety regulations enforced by the park authorities. First-time attendees are advised to arrive early, wear appropriate trail running gear suitable for steep ascents and descents, and bring enough hydration and nutrition to sustain them through long hours in the mountains. The Sleeping Giant Trail Runs will take place at Hamden's iconic Sleeping Giant State Park on April 4th, an event that challenges both body and spirit with its rugged terrain. This race is a testament to the enduring allure of Connecticut’s natural beauty, offering runners not just a physical challenge but also the chance to contribute to preserving one of New England’s most beloved outdoor spaces.
Races Offered
50K
Apr 04, 2027
straighten
Distance —
50K
terrain
Type —
Running
timer
07:00
sell
$85.00
25K
Apr 04, 2027
straighten
Distance —
25K
terrain
Type —
Running
timer
08:00
sell
$75.00
Weather History
These values represent the 3-year monthly averages for April in Hamden.
thermostatTemperature
5.3° / 15.5°
wb_sunnyFeels like
1.6° / 12.0°
light_mode
Avg sunshine hours
8h 30m
water_drop
Avg rainfall
4.0 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
12.4 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
66.9%
wb_twilight
Sunrise
06:10
nightlight
Sunset
19:32
About Hamden
Learn more about the host city, Hamden.
Hamden is a suburb of the city of New Haven, Connecticut. Quinnipiac University has a significant impact on the town. The town's nickname is "The Land of the Sleeping Giant". It had about 59,500 in 2025.