The Bleak Midwinter Endurance Run returns to Springfield, Missouri on January 23rd, offering four different timed endurance events for runners of all levels. Participants can choose from a 12-hour run starting at 7 AM and finishing by 7 PM, a 6-hour option running from 7 AM until 1 PM, or shorter versions with the 3-hour event from 9 AM to noon and a one-hour race beginning at 9 AM sharp. The venue is Sac River Mountain Bike Trails located off Highway 13, three miles north of I-44 in Springfield. Race morning on January 23rd will see runners gathering before dawn as they make their way towards the Sac River Mountain Bike Trails. Temperatures are expected to be chilly with a firm and slightly soft trail surface underfoot, providing both challenge and comfort for endurance athletes preparing to tackle the course’s technical terrain. As daylight breaks over the hardwood forests and small glades of this 300-acre park, runners will begin their journey along the 4.15-ish mile loop. The Bleak Midwinter Endurance Run has been a staple in Springfield since its inception several years ago, drawing endurance enthusiasts from across Missouri and beyond to test themselves against the elements on one of Ozark Greenways' most scenic trails managed by the Springfield-Greene County Park Board. Each year, runners return not just for the challenge but also for the camaraderie and support that has made this event a local tradition. The race course at Sac River Mountain Bike Trails features a 4.15-ish mile loop through rugged terrain marked with permanent signs along single-track trails that wind uphill initially before leveling out into rolling hills, descents, and flats. Runners will experience approximately 400 feet of elevation gain per lap as they navigate the rocky and root-strewn path in either a counterclockwise or clockwise direction after their first lap. Aid stations are strategically placed at the start/finish line where runners can find all necessary support including food, drinks, warmth, and supplies. Weather conditions on race day will likely feature firm trail surfaces with slightly soft spots underfoot due to winter moisture retention in the forest floor. UV index is expected to be low (2.0) providing a comfortable level of sun exposure for outdoor activity without excessive risk of skin damage from sunlight. Temperatures should hover around freezing early morning, gradually warming up as daylight progresses. The Bleak Midwinter Endurance Run offers four distinct options: 12 Hour | 6 Hour | 3 Hour | and 1 Hour runs
12 Hour 12 Hours • Start: 07:00:00 • Fee: $95.00
6 Hour 6 Hours • Start: 07:00:00 • Fee: $75.00
1 Hour 1 Hours • Start: 09:00:00 • Fee: $35.00
3 Hour 3 Hours • Start: 09:00:00 • Fee: $55.00
Registration can be completed online at https://ultrasignup.com/register.aspx?did=139037 with fees ranging from $35 for the one-hour run to $95 for the full twelve hours of competition. Early registration is recommended as prices may increase closer to race day. Packet pickup will take place on January 23rd at Sac River Mountain Bike Trails starting at 6:00 AM for participants in the longer events and moving up to an 8:00 AM start time window for those registered in shorter races. Participants should arrive early, ideally before their assigned packet pickup times, bringing photo ID if needed. The race starts promptly from Sac River Mountain Bike Trails off Highway 13 north of I-44 with clear signage directing runners towards the event area. Age requirements vary based on individual run duration but all participants must be able to complete their chosen distance within designated timeframes. The Bleak Midwinter Endurance Run in Springfield, Missouri on January 23rd provides a unique challenge for endurance athletes looking to test themselves against both technical terrain and cold weather conditions. The event's rich history and dedicated community make it an essential part of the local running calendar.
Races Offered
12 Hour
Jan 23, 2027
straighten
Distance —
12 Hours
terrain
Type —
Running
timer
07:00
sell
$95.00
6 Hour
Jan 23, 2027
straighten
Distance —
6 Hours
terrain
Type —
Running
timer
07:00
sell
$75.00
1 Hour
Jan 23, 2027
straighten
Distance —
1 Hours
terrain
Type —
Running
timer
09:00
sell
$35.00
3 Hour
Jan 23, 2027
straighten
Distance —
3 Hours
terrain
Type —
Running
timer
09:00
sell
$55.00
Weather History
These values represent the 3-year monthly averages for January in Springfield.
thermostatTemperature
-3.8° / 5.1°
wb_sunnyFeels like
-8.9° / 0.8°
light_mode
Avg sunshine hours
6h 8m
water_drop
Avg rainfall
2.0 mm
ac_unit
Avg snowfall
0.4 cm
air
Avg wind speed
12.6 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.0)
humidity_mid
Humidity
71.1%
wb_twilight
Sunrise
08:23
nightlight
Sunset
18:20
About Springfield
Learn more about the host city, Springfield.
Springfield is the third largest city in the state of Missouri, with a population of more than 168,000, and more than 462,000 (2019) in the metro area. It is also known as the Queen City of the Ozarks, and the birthplace of Route 66. Though it's on a flat plateau, the more picturesque Ozarks are just southeast of the city.