Trail RunningUTMB Index Races

Loud Thunder 50

Trail Running covering 21 km to 80.5 km with up to 2,240 m D+ in Illinois City (Illinois, United States)

LocationIllinois City, Illinois, United StatesShow on map(41.3973° N, 90.8997° W)
Date & StatusDate to be announcedDate TBA
First edition2020
Elevation gainUp to +2,240 m

Loud Thunder 50 is an endurance sporting event in Illinois City, Illinois, US focused on Trail Running. First held in 2020, the event is an established fixture on the endurance calendar. It is part of UTMB Index Races. Key features include Mountain, Nature & Off-Road, Forest, High Altitude.

The race program comprises 3 competitions, including 50 Mile (80.47 km, +2,240 m D+), 50 K (50 km, +1,220 m D+), and Half Marathon (21 km, +580 m D+). The exact date for the next edition is currently open and will be announced by the organizer. Official race regulations, course details, and registration information are provided on the organizer's website (ultrasignup.com).

Official website
Loud Thunder 50 in Illinois City (Work: "Blue Ridge Mountains, Shenandoah National Park, Near Luray, Virginia", Photo: Ken Lund from Reno, Nevada, USA, License: CC BY-SA 2.0, Source: Wikimedia Commons)
"Blue Ridge Mountains, Shenandoah National Park, Near Luray, Virginia" · Photo: Ken Lund from Reno, Nevada, USA · Wikimedia CommonsCC BY-SA 2.0
Cropped to 16:9 (960 × 540 px), WebP · Shared under the same license

Event characteristics

MountainNature & Off-RoadForestHigh Altitude

Races & distances (3)

CompetitionDisciplineDistanceElevation gainAltitude rangeCourse typeCourse & profile
50 MileTrail Running80.47 km+2,240 m1,150 m - 2,091 mLoop courseRoute & profile
50 KTrail Running50 km+1,220 m1,153 m - 1,665 mLoop courseRoute & profile
Half MarathonTrail Running21 km+580 m1,156 m - 1,400 mLoop courseRoute & profile
Course & Elevation Telemetry

Course route & map

Distance
80.47 km
Elevation gain
+2,240 m D+
Elevation loss
-2,240 m D-
Altitude range
1,150 m - 2,091 m
Gradient (Avg / Max)
5.6 % / 10.1 %
Course format
Loop course
80.47 km+2,240 m D+
Start (S)Finish (F)
N204060FS41.3973° N, 90.8997° W

Elevation profile & course telemetry

Altitude from 1,150 m to 2,091 m above sea level (+2,240 m D+, -2,240 m D-)

Peak: 2,091 m·at 46.2 km·Ø 5.6 %
1,150 m1,464 m1,777 m2,091 m0 km16.1 km32.2 km48.3 km64.4 km80.5 km2,091 m
Event Information & Answers

Frequently asked questions (FAQ)

When and where does Loud Thunder 50 take place?

Loud Thunder 50 takes place in Illinois City, Illinois, US (start area at coordinates 41.3973° N, 90.8997° W). The exact date for the next edition is currently open and will be announced by the organizer.

What races and distances are offered at Loud Thunder 50?

The race program comprises 3 competitions, including 50 Mile (80.47 km, +2,240 m D+), 50 K (50 km, +1,220 m D+), and Half Marathon (21 km, +580 m D+). The competitions belong to Trail Running.

What is the course layout and elevation profile for Loud Thunder 50?

The main competition (50 Mile over 80.47 km) is designed as a loop course featuring +2,240 m of elevation gain and -2,240 m of elevation loss, ranging between 1,150 m and 2,091 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.

Where can I find registration and official race rules for Loud Thunder 50?

Official race regulations, course details, and registration information are provided on the organizer's website (ultrasignup.com).