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Merced River Canyon Run - Burma Grade and McCabe Flat

Name: Merced River Canyon Run - Burma Grade and McCabe Flat
Start: 2026-04-04
End: 2026-04-04
Location: Briceburg

Briceburg, California, United States

calendar_today 04 Apr, 2026

directions_run Running

language Official Website

sell $38.00

About the Event

Mariposa county's classic Merced River Canyon Race returns this year with two options for runners.

McCabe Flat Flat out. This 5 mile race is from the Briceburg bridge to McCabe Flat campground and back (2.5 each way). As the name suggests this race is about as flat as a race in the foothills can be. This race can be done at any pace but some will choose to try and set a record on the flattest footrace in the county.

Burma Grade. This 9 mile race starts at the river level and climbs up the mighty Burma Grade (4.5 each way). This race offers the most elevation of any foot race in the county and leaves the racers with an amazing sense of accomplishment.

Both races are on hardpacked unpaved roads and offer amazing scenery in the Merced River Canyon.

Note on location and directions, please take highway 140 to get to Briceburg. While there are other ways to get here, they are not recommend, especially not on race day.

Races Offered

Burma Grade hill climb

Apr 04, 2026

straighten

Distance — 8.8 Miles

terrain

Type — Running

timer

08:00

sell

$38.00

McCabe Flat flat out

Apr 04, 2026

straighten

Distance — 5 Miles

terrain

Type — Running

timer

08:00

sell

$38.00

Weather History

These values represent the 3-year monthly averages for April in Briceburg.

thermostat Temperature

6.1° / 20.3°

wb_sunny Feels like

3.6° / 18.3°

light_mode Avg sunshine hours

11h 30m

water_drop Avg rainfall

1.8 mm

ac_unit Avg snowfall

0.5 cm

air Avg wind speed

7.1 km/h (Light breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.0)

humidity_mid Humidity

70.7%

wb_twilight Sunrise

06:23

nightlight Sunset

19:35

About Briceburg

Learn more about the host city, Briceburg.

Briceburg is an unincorporated community in Mariposa County, California. It is located on the Merced River near the confluence with Bear Creek, 5 miles (8 km) north-northwest of Midpines. It is accessed via a bridge over the Merced River that connects Highway 140 with Briceburg Road. The bridge is a 160-foot (49 m) suspension bridge built by the US Forest Service in 1937 and constructed by 30 Civilian Conservation Corps enrollees. Forest Service Engineer J. W. Nute was in charge of construction. The community name honors William M. Brice, who built a store at the location in 1926.