Skip to content
Allen Kao
WAITLIST ACTIVE March 21, 2026
Grasslands Trail Run

100 Mile

Alvord, TX
Other Distances: 50 MilerMarathon1/2 Marathon15K
Field Strength
78.8%
5 Elite (90+)
Total Entrants
123
Registered Runners

Since 1999, the Grasslands Trail Run has challenged athletes within the 20,000-acre Lyndon B. Johnson National Grasslands of North Texas. This scenic event features a fast, runnable course through rolling hills and post oak savannas, offering distances ranging from a 15K to a premier 100-mile ultramarathon.

View Race Details

Field Strength

Field Strength
78.8%
Rank of 20th
+8.9%
Median Rank
68.6%
90+
5
80-89
13
60-79
30
<60
21
New
54
Elite Runners (90+)
Count
5
+2.5 vs avg
% of Field
4.1%
+2.7% vs avg

About rankings: Stats based on 69 runners with 5+ UltraSignup finishes.

Field Strength is the UltraSignup rank of the 20th strongest qualified runner—a higher value indicates greater depth of talent.

Excluded: 39 with <5 finishes, 15 unranked

90+ = Elite • 80-89 = Strong • 60-79 = Experienced • <60 = Developing

Registration Analysis

Total Entrants
123
Ranked Runners
69
Field Size Meter
Smallest (50) Largest (878)

Field

Top Men

Rank Score
LR
Luis Rojas
12 results
Dallas, TX
99.2%
KM
Karl Meltzer
157 results
Ridgway, CO
92.8%
NP
Nick Petterson
24 results
Leander, TX
91.1%
KZ
Ken Zemach
58 results
Reno, NV
85.6%
AC
Andrew Catalano
20 results
Bloomington, IL
84.4%