Experience the eerie allure of The Dark Loop Race, set within the historic Bellevue Underground Mine (BUM) from October 31 to November 1, 2026. Starting at 9:00 AM and running until 8:00 AM on race day due to daylight saving time changes, this unique event challenges runners with a 24-hour, 12-hour, 6-hour, or 3-hour duration. Venture into the dimly lit tunnels of BUM, where the coal-rich history whispers through the air. The mine shaft stretches for 250 meters, offering a steady 1% grade that tests your endurance. With an average width of about four meters, the passage is spacious enough to accommodate up to four runners side by side—except near the old mine car section. The race environment maintains a consistent temperature between 0°C and 2°C year-round, ensuring predictable conditions despite the season. As you navigate through the darkness, take breaks at the warming station located just outside the entrance. Here, refreshments will be available to keep your energy levels up throughout the grueling journey. With only one hundred competitors allowed in the tunnel at any time due to its tight spaces, The Dark Loop Race promises a intimate and intense experience. Participants are encouraged to explore more about race logistics on their official website: https://www.sinistersports.ca/thedark Dive into this thrilling nightmarish adventure during Halloween week. Crowsnest Pass celebrates the holiday in grand style; check the event's webpage for town-specific activities, ensuring you're fully immersed in the spirit of All Hallows' Eve. Embrace your inner nocturnal explorer and join us at The Dark—where history meets heart-pounding challenge!
Races Offered
12-hour Category (9:00pm Start)
Spots rem
Oct 31, 2026
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Distance —
12-hour Category (9:00pm Start)
Spots rem
terrain
Type —
Running
timer
09:00
sell
$180.00
24-hour Category (9:00am Start)
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Oct 31, 2026
straighten
Distance —
24-hour Category (9:00am Start)
Spots rem
These values represent the 3-year monthly averages for October in Bellevue.
thermostatTemperature
1.7° / 10.5°
wb_sunnyFeels like
-2.7° / 6.4°
light_mode
Avg sunshine hours
7h 0m
water_drop
Avg rainfall
0.6 mm
ac_unit
Avg snowfall
0.1 cm
air
Avg wind speed
12.1 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.8)
humidity_mid
Humidity
66.4%
wb_twilight
Sunrise
08:03
nightlight
Sunset
18:34
About Bellevue
Learn more about the host city, Bellevue.
Bellevue is the largest city on the east side of Lake Washington, across from Seattle in Washington state. Bellevue is perhaps the most ritzy part of the Seattle metro area and the Puget Sound region, mainly due to the presence of Microsoft at nearby Redmond and other tech companies occupying the downtown office towers. The dense downtown has much of the region's upscale and luxury retail. It also has many neighborhoods comprised of large houses, and excellent vistas of the water for the lucky few. It is considered more pleasant and safe, if blander, than Seattle, though the influx of international tech workers has led to a vibrant Chinese community.
