Lost Sierra Endurance Race 2027

23.07 – 24.07.2027Downieville (United States)

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4 courses · 11.3–100 km7–62.1 mi · up to 3’285 m D+up to 10’778 ft D+

At a glance

Lost Sierra Endurance Race 2027 takes place from Friday 23 to Saturday 24 July 2027 in Downieville (California, United States). 4 courses from 11.3 to 100 km.

Longest course: 100 km with 3’285 m D+ (33 m per km: hilly terrain). It has 9 aid stations. Terrain: 85% trail, 4% forest track and 10% road. Terrain data: © OpenStreetMap contributors.

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Conquer the Sierra Buttes. A challenging out-n-back course starting in downtown Downieville, traveling up towards the Sierra Buttes then to Plumas-Eureka State Park (PESP), Blairsden, CA where the…

From the organiser

4 courses

11.3km7mi
1’320 m D+4’331 ft D+
5 m D-16 ft D-
avg 12%
Summit VK+
No index
GPX
25km15.5mi
710 m D+2’329 ft D+
662 m D-2’172 ft D-
avg 3%
25K
2 aid stations
No index
GPX
50km31.1mi
1’634 m D+5’361 ft D+
1’935 m D-6’348 ft D-
avg 3%
50K
4 aid stations
No index
GPX
100km62.1mi
3’285 m D+10’778 ft D+
3’184 m D-10’446 ft D-
avg 3%
100K
9 aid stations
No index
GPX

Course analysis

100 km62.1 mi3’285 m D+10’778 ft D+

133effort kmⓘ100 km on the map · feels like 133 km62.1 mi on the map · feels like 133 km

D+: 3’285 m10’778 ft
D−: 3’184 m10’446 ft
Max alt.: 2’283 m7’490 ft
Steepest: 10%

Segments

Elevation profile: 100K

882 m – 2’283 m2’894 ft – 7’490 ft

Terrain

Aid station by aid station

Terrain, climb and cutoff between each aid station.

Start → Lavezolla AS #1 km 0 → 6.7km 0 → 4.2
6.7 km4.2 mi · +170 m558 ft · −36 m118 ft
Lavezolla AS #1 → Golden Valley AS #2 km 6.7 → 23.4km 4.2 → 14.6
16.8 km10.4 mi · +1’166 m3’825 ft · −111 m364 ft
Golden Valley AS #2 → Lots-O-Lakes AS #3 km 23.4 → 31.8km 14.6 → 19.8
8.4 km5.2 mi · +261 m856 ft · −187 m614 ft
Lots-O-Lakes AS #3 → Smith Lake AS #4 km 31.8 → 42.2km 19.8 → 26.2
10.4 km6.5 mi · +140 m459 ft · −518 m1’699 ft
Smith Lake AS #4 → Plumas-Eureka AS #5 km 42.2 → 51.3km 26.2 → 31.9
9.1 km5.6 mi · +202 m663 ft · −398 m1’306 ft
Plumas-Eureka AS #5 → Smith Lake AS #4 km 51.3 → 59.4km 31.9 → 36.9
8.1 km5.1 mi · +371 m1’217 ft · −173 m568 ft
Smith Lake AS #4 → Lots-O-Lakes AS #3 km 59.4 → 69.8km 36.9 → 43.4
10.4 km6.5 mi · +522 m1’713 ft · −149 m489 ft
Lots-O-Lakes AS #3 → Golden Valley AS #2 km 69.8 → 78.2km 43.4 → 48.6
8.4 km5.2 mi · +190 m623 ft · −260 m853 ft
Golden Valley AS #2 → Lavezolla AS #1 km 78.2 → 95.7km 48.6 → 59.4
17.5 km10.9 mi · +133 m436 ft · −1’191 m3’907 ft
Lavezolla AS #1 → Finish km 95.7 → 100km 59.4 → 62.1
4.4 km2.7 mi · +26 m85 ft · −71 m233 ft

Elevation figures are measured by Kliva on the course trace. Cutoffs are the organiser's.

Race plan

Plan your race from start to finish.

Pacing, aid stations and fueling timed to your effort on Lost Sierra Endurance Race, in one roadbook.

Includes this race's official aid stations and cutoff times.

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