Some ultras in Northern California (& Nevada) shorter than 100 miles
DateRaceDist.LocationClimb/Descent
8/1/10 Skyline 50k Castro Valley 4740'/4740'
8/14/10 Wildest Run in the West 100k Soda Springs ?/?
8/14/10 Cinderella 50k Oakland 5450'/5450'
8/14/10 Hotter than Hell 6hr/12hr Cameron Park ?/?
8/15/10 Montana de Oro 50k Los Osos 6400'/6400'
8/15/10 Stevens Creek 50k Cupertino 5000'/5000'
8/28/10 Headlands 50K 50k Sausalito ?/?
9/4/10 Woodside 50k Woodside 4530'/4530'
9/5/10 Run on the Sly 50k Pollock Pines 4075'/4075'
9/11/10 Lake of the Sky 33m Tahoe City 4427'/4427'
9/18/10 Redwood Park 50k Oakland 4500'/4500'
9/25/10 Sierra Nevada 52.4m Granite Bay 5090'/5180'
9/25/10 Lake Tahoe 72m So. Lake Tahoe ?'/?'
9/26/10 Santa Cruz Mountains 50k Santa Cruz 5175'/5175'
10/2/10 Gold Country 50k Auburn ?'/?'
10/3/10 Skyline Ridge 50k La Honda 5190'/5190'
10/9/10 Dick Collins' Firetrails 50m Castro Valley 7820'/7840'
10/16/10 Mt. Diablo 50k Clayton 8900'/8900'
10/16/10 Rock'n River 50 50m Auburn 3474'/2139'
10/23/10 Whiskeytown 50k Redding 5120'/5120'
10/23/10 San Francisco One Day 12hr/24hr San Francisco 0'/0'
10/23/10 Jenkinson Lake Fall Trail 50k Pollock Pines 4674'/4674'
10/24/10 Malibu Canyon 50k Calabasas ?'/?'
10/30/10 Boggs Mountain Trail Races 50k Cobb ?'/?'
11/6/10 Helen Klein 50k/50m Granite Bay ?'/?'
11/7/10 Hunter S. Thompson
Fear & Loathing		 50k/50m San Francisco 2600'/2600'
11/7/10 Muir Beach 50k Muir Beach 7130'/7130'
11/13/10 Spooner's Cove 50k Los Osos ?'/?'
11/7/10 Stinson Beach 50k Stinson Beach 5770'/5770'
11/13/10 Run the River 50k Granite Bay 0'/450'
11/13/10 Folsom Point - Fall 50k Folsom 2159'/2159'
11/21/10 Santa Monica Mtns. 50k Malibu 5490'/5490'
11/27/10 Quad Dipsea 28.4m Mill Valley 9276'/9276'
12/4/10 Woodside 50k Woodside 4530'/4530'
12/18/10 Rodeo Beach 50k Sausalito 5980'/5980'
1/1/11 Fat Ass 50k Saratoga ?
1/2/11 Epiphany Ultra 59k Oakland ?'/?'
1/23/10 Pacifica 50k Pacifica 7090'/7090'
2/6/10 Woodside 50k Woodside 4610'/4610'
2/5/11 Jed Smith 50k/50m Sacramento 540'/960'
2/6/10 Las Trampas 50k Castro Valley 10273'/10273'
2/12/11 Cool Trail Runs 50k Cool ?'/?'
2/14/10 Montana de Oro 50k Los Osos 6400'/6400'
2/19/11 2nd Saratoga Fat Ass 50k Saratoga ?'/?'
2/26/11 Pony Express 50k/50m Cameron Park ?/?
2/27/10 Sequoia 50k Oakland 5030'/5030'
3/7/10 Malibu Creek 50k Malibu 5940'/5940'
3/12/11 Way Too Cool 50k Cool 3600'/3600'
3/19/11 Rucky Chucky Roundabout 50k Foresthill ?'/?'
3/20/10 Pirates Cove 50k Sausalito 6180'/6180'
3/20/10 Diablo Trail 50k Brentwood ?'/?'
4/2/11 Lake Sonoma 50m Geyserville 10500'/10500'
4/4/10 Sycamore Canyon 50k Malibu 5190'/5190'
4/9/11 American River 50m Sacramento 3474'/2139'
4/18/10 Skyline to the Sea 50k Los Gatos 3045'/5625'
4/23/11 Ruth Anderson 50k/50m/100k San Francisco 1450'/1450'
4/24/10 Sunsweet 50k Red Bluff 1000'/1000'
4/24/10 Folsom Point - Spring 50k Folsom 2159'/2159'
5/7/11 Mi-Wok Trail 100k Sausalito 9500'/9500'
5/8/10 Jenkinson Lake 50k Pollock Pines 4674'/4674'
5/9/10 Redwood Park 50k Oakland 4500'/4500'
5/14/11 Quicksilver 50k
50m		 San Jose 5440'/5440
8530'/8530'
5/15/10 Silver State 50k
50m		 Reno, NV 5800'/6100'
9200'/9200'
5/16/10 Big Basin Redwoods 50k Boulder Creek 5925'/5925'
5/23/10 Ohlone Wilderness 50k Fremont 8530'/8160'
6/5/10 Mt. Diablo 50k Clayton 8900'/8900'
6/5/10 Auburn Trail 50k Auburn 5122'/5122'
6/12/10 Lake Merritt Half Day 6hr/12hr Oakland ?'/?'
6/13/10 San Lorenzo River 50k Santa Cruz 5175'/5175'
6/19/10 Angel Island 50k Tiburon 4200'/4200'
7/3/10 Pacifica 50k Pacifica 7090'/7090'
7/17/10 Tahoe Rim Trail 50k
50m		 Lake Tahoe, NV 6895'/6895'
9894'/9894'
7/17/10 Headlands Fifty 50k Sausalito 5005'/5005'
7/17/10 Cool Moon 12h/24h Cool ?'/?'
7/24/10 Sequoia 50k Oakland 5030'/5030'
8/6/11 12 Hours at Cool (night run) 12h Cool 900'/900'
8/28/11 Salt Point 50k Jenner 4960'/4960'

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: 8/31/10) StanJ@Run100s.com