Some ultras in Northern California (& Nevada) shorter than 100 miles
DateRaceDist.LocationClimb/Descent
5/18/13 Silver State 50k
50m		 Reno, NV 5800'/6100'
9200'/9200'
5/19/13 Horseshoe Lake 50k Palo Alto 4560'/4560'
5/18/13 Run in the Pines 50k Pollock Pines ?'/?'
5/19/13 Ohlone Wilderness 50k Fremont 8530'/8160'
6/1/13 Auburn Trail 50k Auburn ?'/?'
6/1/13 Calero Park & Rancho Canada del Oro 32m
50m		 San Jose 4000'/4000'
6250'/6250'
6/2/13 Canyon Meadow 50k Oakland 3812'/3812'
6/15/13 She Rocks the Trails 50k Folsom ?'/?'
6/9/13 Big Basin 50k Los Gatos 5790'/5790'
6/16/13 Worth the Hurt 52m San Francisco ?'/?'
6/22/13 Marin Ultra Challenge 50k/50m Sausalito ?/?
10010'/10010'
6/22/13 San Lorenzo River 50k Santa Cruz 5175'/5175'
7/6/13 Rancho Canada del Oro & Calero Park 50k Morgan Hill ?'/?'
7/14/13 Golden Gate 50k Rodeo Beach 6320'/6320'
7/20/13 Tahoe Rim Trail 50k
50m		 Lake Tahoe, NV 6895'/6895'
9894'/9894'
7/27/13 Lovers Leap of Faith 50k/50m Strawberry ?'/?'
?'/?'
8/3/13 San Francisco 50m Rodeo Beach 10010'/10010'
8/3/13 Cool Moon 12hr/24hr Cool ?'/?'
8/10/13 Crystal Springs 50k Woodside 4530'/4530'
8/10/13 Echo Summit 50k/50m Twin Bridges ?'/?'
?'/?'
8/11/13 Skyline 50k Castro Valley 4740'/4740'
8/17/13 Run-de-Vous 50k
50m		 San Martin ?'/?'
2125'/2125'
8/17/13 Rattlesnake Ultra 50k Newcastle ?'/?'
8/18/13 Run on the Sly 50k Pollock Pines 4075'/4075'
8/18/13 Cinderella 50k Oakland 5450'/5450'
8/24/13 Tamalpa Headlands 50K 50k Muir Beach 7300'/7300'
8/24/13 Headwaters Ultra 50k Mount Shasta 4400'/4400'
8/31/13 Skirt and Dirt 50k Oakland 5030'/5030'
9/(8)/12 Robinson Flat 50k Foresthill ?'/?'
9/14/13 Mathis Memorial 50k Folsom Lake ?'/?'
9/15/13 Diablo 50k Clayton 7990'/7990'
9/(15)/12 Folsom Point 50k Folsom ?'/?'
9/14/13 Headlands 50m Sausalito 10034'/10034'
9/(16)/12 End of Summer 50k Santa Clara ?'/?'
9/22/12 Coastal 50k Stinson Beach 5090'/5090'
9/(24)/12 Race Against the Clock 6hr/12hr San Francisco ?'/?'
9/28/13 Stevens Creek 50k Cupertino 5000'/5000'
9/(28)/12 Lake Tahoe 50m/72m So. Lake Tahoe ?'/?'
?'/?'
9/(29)/12 Woodside 50k Woodside ?'/?'
9/(30)/12 Redwood Peak 50k Oakland 4500'/4500'
10/(6)/12 Rio del Lago 50k
100k		 Granite Bay ?'/?'
?'/?'
10/(7)/12 Bizz Johnson 50k Susanville ?'/?'
10/12/13 Dick Collins' Firetrails 50m Castro Valley 7820'/7840'
10/(13)/12 Horseshoe Lake 50k Muir Beach ?'/?'
10/(13)/12 Weaver Basin 50k Weaverville 4000'/4000'
10/(13)/12 San Francisco One Day 12hr/24hr San Francisco ?'/?'
10/(14)/12 Boggs Mountain Boogie 50k Cobb ?'/?'
10/19/13 Coyote Ridge 50k Muir Beach 7130'/7130'
10/19/13 Rock'n River 50m Auburn 2139'/3474'
10/(27)/12 Whiskeytown 50k Redding 5120'/5120'
10/(27)/12 Stinson Beach 50k Stinson Beach ?'/?'
10/(28)/12 Folsom Lake 50k Folsom 2030'/2030'
11/2/13 Almaden Hills 50k San Jose ?'/?'
11/(3)/12 Lake Chabot 50k Castro Valley 2670'/2670'
11/(11)/12 Mt. Tam 50k Stinson Beach 7000'/7000'
11/(18)/12 Spooner's Cove 50k Los Osos 6400'/6400'
11/(18)/12 Santa Monica Mountains 50k Malibu ?'/?'
11/30/13 Quad Dipsea 28.4m Mill Valley 9276'/9276'
12/7/13 North Face 50k
50m		 Sausalito ?'/?'
?'/?'
12/7/13 Calero Park & Rancho Canada del Oro 32m San Jose ?'/?'
12/(9)/12 HST Fear & Loathing 50k/50m San Francisco 2739'/2743'
12/(15)/12 Woodside Ramble 50k Woodside 4530'/4530'
12/(15)/12 Rodeo Beach 50k Sausalito 5980'/5980'
12/(30)/12 Rodeo Valley 50k Sausalito 6000'/6000'
12/(30)/12 Woodside 50k Woodside ?'/?'
12/31/13 New Year's One Day 6hr/12hr/24hr San Francisco 0'/0'
1/(5)/13 Crystal Springs 50k Woodside 4530'/4530'
1/(6)/13 Epiphany Ultra 59k Oakland 2750'/2750'
1/(12)/13 Fat Ass 50k Saratoga ?
1/(19)/13 Pacifica Foothills 50k Pacifica 7090'/7090'
1/(27)/13 Steep Ravine 50k Stinson Beach 5770'/5770'
2/(2)/13 Jed Smith 50k/50m Sacramento 540'/960'
2/8/14 American Canyon 50k Auburn ?'/?'
2/(9)/13 Folsom South Side 50k/38m Folsom ?'/?'
?'/?'
2/(10)/13 Golden Gate 50k Rodeo Beach 6320'/6320'
2/(16)/13 Las Trampas 50k Castro Valley 10273'/10273'
2/(23)/13 Cool Triple Threat 50k Cool ?'/?'
2/(24)/13 Montara Mountain 50k Pacifica 6700'/6700'
2/(23)/13 Chabot Trail 50k Castro Valley ?'/?'
2/(24)/13 San Bruno Mountain 50k/50m Daly City ?'/?'
3/8/14 Way Too Cool 50k Cool 6113'/6107'
3/(16)/13 Rodeo Valley Trail 50k Sausalito 6180'/6180'
3/(24)/13 Canyon Meadow 50k Oakland 3812'/3812'
3/22/14 4MPH Challenge ? Whiskeytown ?'/?'
3/(30)/13 Berry Creek Falls 50k Boulder Creek 6670'/6670'
4/(6)/13 American River 50m Sacramento 3474'/2139'
4/(7)/13 Grizzly Peak 50k Berkeley 6760'/6760'
4/12/14 Lake Sonoma 50m Geyserville 10500'/10500'
4/(13)/13 Woodside Ramble 50k Woodside 4610'/4610'
4/19/14 Ruth Anderson 50k/50m/100k San Francisco 1450'/1450'
4/(20)/13 Sunsweet Wildflowers 50k Red Bluff 1000'/1000'
4/(20)/13 Mokelumne River 50k/50m Lake Comanche ?'/?'
4/(20)/13 Diablo Trails Challenge 50k Brentwood ?'/?'
4/(27)/13 Sierra Azul Challenge 50k/50m Los Gatos ?'/?'
5/3/14 Miwok Trail 100k Stinson Beach 11628'/11628'
5/(5)/13 Rucky Chuck Roundabout 50k Foresthill ?'/?'
5/(11)/13 Gold Rush 100k Coloma 1600'/750'
5/(11)/13 Quicksilver 50k
50m		 San Jose 5440'/5440'
8530'/8530'
5/(11)/13 Me-Ow! Double Marathon 52.4m Whiskeytown ?'/?'
5/(11)/13 Cinderella 50k Oakland 5450'/5450'

Ultras - An ultramarathon is any running event longer than a marathon (i.e. 26.2 miles).
An ultrarun is any unusually difficult running event, regardless of distance (e.g. Pikes Peak Marathon).

"http://www.Run100s.com/sub100.htm" (updated: 5/13/13) StanJ@Run100s.com