The Dinosaur Valley Endurance Run returns to Glen Rose, Texas on November 21st through the 22nd for its tenth anniversary event at picturesque Dinosaur Valley State Park. This endurance race offers a variety of distances catering to all levels of runners and trail enthusiasts. Participants can choose from a full marathon distance (50K), half marathon length (25K), or shorter options including multiple 5-mile races throughout the weekend. Race morning in Glen Rose will see runners gather at Dinosaur Valley State Park, where they'll face challenging terrain that includes both gradual up and downhills as well as softer dirt paths mixed with rocky sections. The park's natural setting adds to the atmosphere, offering scenic views of the surrounding countryside while runners navigate through technical trails dotted with obstacles like roots and rocks. Since its inception ten years ago, the Dinosaur Valley Endurance Run has grown in popularity within the running community for both competitive athletes seeking qualifying times and casual participants interested in exploring the park's unique features. The event supports a cause close to home by raising funds for local youth programs and scholarships through participant fees and sponsorships. The race courses wind along established trails, incorporating various elevations that range from gentle hills to more rugged terrain characteristic of Dinosaur Valley State Park. Aid stations are strategically placed at key points throughout the course, providing water and energy supplements necessary during longer distances like the 100K and 160-mile events. The weather forecast for early November in Glen Rose typically suggests firm yet slightly soft trail conditions with low UV exposure.
The race offers a range of challenges from the grueling 100 Miler covering over 160 kilometers to shorter distances such as the Triassic 25K and various 8-kilometer 5 Mile races. The Mesozoic Maniac option allows runners to participate in all three periods across two days, completing a total of fifteen miles. In terms of registration, participants can sign up through [https://ultrasignup.com/register.aspx?did=133438](https://ultrasignup.com/register.aspx?did=133438). Fees vary by distance with the 100 Miler costing $290.00, while smaller events like the Triassic or Jurassic 5 Miles are priced at just $60 each. Bib pickup will take place on race morning starting from 7 am for early starters and continuing through to Saturday afternoon. The start location is located at 4004 Co Rd 1007 in Glen Rose, Texas where all participants must check-in with their bib numbers before the designated start times. Age requirements are set by distance; younger runners interested in the Kids K should be noted that this specific event does not exist within the provided data and would need to register for an age-appropriate race instead. The Dinosaur Valley Endurance Run, taking place from November 21st through the 22nd in Glen Rose, Texas, is a testament to the enduring appeal of trail running as a community-driven sport. Its challenging terrain and scenic routes make it worth attending for anyone looking to push their limits while enjoying some of nature's most beautiful trails.
Races Offered
100 Miler
Nov 21, 2026
straighten
Distance —
160.9K
terrain
Type —
Running
timer
07:00
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$290.00
100K
Nov 21, 2026
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Distance —
100K
terrain
Type —
Running
timer
07:00
sell
$200.00
50K
Nov 21, 2026
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Distance —
50K
terrain
Type —
Running
timer
08:00
sell
$125.00
Mesozoic Maniac
Nov 21, 2026
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Distance —
24.1K
terrain
Type —
Running
timer
08:00
sell
$165.00
Triassic 25K
Nov 21, 2026
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Distance —
25K
terrain
Type —
Running
timer
08:00
sell
$100.00
Triassic 5 Mile
Nov 21, 2026
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Distance —
8K
terrain
Type —
Running
timer
08:00
sell
$60.00
Jurassic 5 Mile
Nov 21, 2026
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Distance —
8K
terrain
Type —
Running
timer
20:00
sell
$60.00
Cretaceous 25K
Nov 22, 2026
straighten
Distance —
25K
terrain
Type —
Running
timer
08:00
sell
$100.00
Cretaceous 5 Mile
Nov 22, 2026
straighten
Distance —
8K
terrain
Type —
Running
timer
08:00
sell
$60.00
Weather History
These values represent the 3-year monthly averages for November in Glen Rose.
thermostatTemperature
10.5° / 21.8°
wb_sunnyFeels like
8.0° / 19.3°
light_mode
Avg sunshine hours
8h 26m
water_drop
Avg rainfall
1.9 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
12.2 km/h (Gentle breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.0)
humidity_mid
Humidity
64.0%
wb_twilight
Sunrise
08:00
nightlight
Sunset
18:30
About Glen Rose
Learn more about the host city, Glen Rose.
Glen Rose is in the Prairies and Lakes region of Texas. It is the county seat of Somervell County.
