Trail RunningUTMB Index Races

Trail des Sources de la Loire

Trail Running covering 11 km to 111 km with up to 3,830 m D+ in Costaros (Auvergne-Rhône-Alpes, France)

LocationCostaros, Auvergne-Rhône-Alpes, FranceShow on map(44.8942° N, 3.8502° E)
Date & StatusDate to be announcedDate TBA
Elevation gainUp to +3,830 m

Trail des Sources de la Loire is an endurance sporting event in Costaros, Auvergne-Rhône-Alpes, FR focused on Trail Running. It is part of UTMB Index Races. Key features include Nature & Off-Road, Forest, Mountain, Lakes & Ponds.

The race program comprises 7 competitions, including TSL 111 (111 km, +3,830 m D+), TSL 61 (61 km, +1,740 m D+), TSL 50 (50 km, +1,450 m D+), Trail 38 km (38 km, +1,150 m D+), TSL 32 (32 km, +1,080 m D+), and TSL 18 (18 km, +684 m D+) (7 competitions in total). 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 (3soleils-trail.fr).

Official website
Trail des Sources de la Loire in Costaros (Work: "Table mountain light painting", Photo: Jonathan Beech, License: CC BY-SA 4.0, Source: Wikimedia Commons)
"Table mountain light painting" · Photo: Jonathan Beech · Wikimedia CommonsCC BY-SA 4.0
Cropped to 16:9 (960 × 540 px), WebP · Shared under the same license

Event characteristics

Nature & Off-RoadForestMountainLakes & PondsNight RunMulti-DayHigh Altitude

Races & distances (7)

CompetitionDisciplineDistanceElevation gainAltitude rangeCourse typeCourse & profile
TSL 111Trail Running111 km+3,830 m612 m - 2,221 mLoop courseRoute & profile
TSL 61Trail Running61 km+1,740 m615 m - 1,346 mLoop courseRoute & profile
TSL 50Trail Running50 km+1,450 m618 m - 1,227 mLoop courseRoute & profile
Trail 38 kmTrail Running38 km+1,150 m621 m - 1,104 mLoop courseRoute & profile
TSL 32Trail Running32 km+1,080 m624 m - 1,078 mLoop courseRoute & profile
TSL 18Trail Running18 km+684 m612 m - 899 mLoop courseRoute & profile
TSL 11Trail Running11 km+494 m615 m - 822 mLoop courseRoute & profile
Course & Elevation Telemetry

Course route & map

Distance
111 km
Elevation gain
+3,830 m D+
Elevation loss
-3,830 m D-
Altitude range
612 m - 2,221 m
Gradient (Avg / Max)
6.9 % / 12.4 %
Course format
Loop course
111 km+3,830 m D+
Start (S)Finish (F)
N20406080100FS44.8942° N, 3.8502° E

Elevation profile & course telemetry

Altitude from 612 m to 2,221 m above sea level (+3,830 m D+, -3,830 m D-)

Peak: 2,221 m·at 62.8 km·Ø 6.9 %
612 m1,148 m1,685 m2,221 m0 km22.2 km44.4 km66.6 km88.8 km111 km2,221 m
Event Information & Answers

Frequently asked questions (FAQ)

When and where does Trail des Sources de la Loire take place?

Trail des Sources de la Loire takes place in Costaros, Auvergne-Rhône-Alpes, FR (start area at coordinates 44.8942° N, 3.8502° E). The exact date for the next edition is currently open and will be announced by the organizer.

What races and distances are offered at Trail des Sources de la Loire?

The race program comprises 7 competitions, including TSL 111 (111 km, +3,830 m D+), TSL 61 (61 km, +1,740 m D+), TSL 50 (50 km, +1,450 m D+), Trail 38 km (38 km, +1,150 m D+), TSL 32 (32 km, +1,080 m D+), and TSL 18 (18 km, +684 m D+) (7 competitions in total). The competitions belong to Trail Running.

What is the course layout and elevation profile for Trail des Sources de la Loire?

The main competition (TSL 111 over 111 km) is designed as a loop course featuring +3,830 m of elevation gain and -3,830 m of elevation loss, ranging between 612 m and 2,221 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 Trail des Sources de la Loire?

Official race regulations, course details, and registration information are provided on the organizer's website (3soleils-trail.fr).