Some ultras in Northern California (& Nevada) shorter than 100 miles
DateRaceDist.LocationClimb/Descent
15-Mar-14 Marin Ultra Challenge 50k/50m Sausalito ?/?
22-Mar-14 Canyon Meadow 50k Oakland 3812'/3812'
22-Mar-14 Mt. Umunhum 50k/50mi/100k San Jose ?'/?'
22-Mar-14 Armstrong Redwoods 50k Guerneville ?'/?'
29-Mar-14 4MPH Challenge ? Whiskeytown ?'/?'
5-Apr-14 American River 50m Sacramento 3474'/2139'
5-Apr-14 Grizzly Peak 50k Berkeley 6760'/6760'
12-Apr-14 Lake Sonoma 50m Geyserville 10500'/10500'
13-Apr-14 Woodside Ramble 50k Woodside 4610'/4610'
19-Apr-14 Ruth Anderson 50k/50m/100k San Francisco 1450'/1450'
19-Apr-14 Tehama Wildflowers 50k Red Bluff 1000'/1000'
19-Apr-14 Mokelumne River 50k/50m Lake Comanche ?'/?'
19-Apr-14 Diablo Trails Challenge 50k Brentwood ?'/?'
19-Apr-14 Folsom 100k 100k Folsom ?'/?'
26-Apr-14 Folsom Lake 50k Folsom 2030'/2030'
26-Apr-14 Sierra Azul Trail Challenge 50k/50m Los Gatos ?'/?'
3-May-14 Miwok Trail 100k Stinson Beach 11628'/11628'
3-May-14 Me-Ow! Double Marathon 52.4m Whiskeytown 20000'/20000'
3-May-14 The Canyons 50k Foresthill 9200'/9200'
3-May-14 Run in the Pines 50k Pollock Pines ?'/?'
10-May-14 Quicksilver 50k/100k San Jose ?'/?'
10-May-14 Gold Rush 100k Folsom 7118'/7118'
10-May-14 Mt. Diablo 50k Clayton ?'/?'
17-May-14 Bishop High Sierra 50k/50m/100k Bishop ?'/?'
17-May-14 Calero Park 50k/50m San Jose ?'/?'
17-May-14 Silver State 50k
50m		 Reno, NV 5800'/6100'
9200'/9200'
18-May-14 Horseshoe Lake 50k Palo Alto 4560'/4560'
18-May-14 Ohlone Wilderness 50k Fremont 8530'/8160'
31-May-14 Canyon Meadow 50k Oakland 3812'/3812'
7-Jun-14 Lovers Leap of Faith 50k/50m Twin Bridges ?'/?'
8-Jun-14 Big Basin 50k Los Gatos 5790'/5790'
14-Jun-14 Rodeo Valley 50k Sausalito 6000'/6000'
14-Jun-14 She Rocks the Trails 50k Folsom ?'/?'
21-Jun-14 San Lorenzo River 50k Santa Cruz 5175'/5175'
21-Jun-14 Summer Solstice 6hr/12hr/24hr San Francisco ?'/?'
12-Jul-14 Golden Gate 50k Rodeo Beach 6320'/6320'
12-Jul-14 Pacifica 50k Pacifica ?'/?'
19-Jul-14 Tahoe Rim Trail 50k
50m		 Lake Tahoe, NV 6895'/6895'
9894'/9894'
27-Jul-14 Worth the Hurt 52m San Francisco ?'/?'
2-Aug-14 San Francisco 50m Rodeo Beach 10010'/10010'
2-Aug-14 Echo Summit Trail Challenge 50k/50m/100k Echo Summit ?'/?'
2-Aug-14 Salt Point 50k Jenner ?'/?'
3-Aug-14 Skyline 50k Castro Valley 4740'/4740'
9-Aug-14 Cool Moon 6hr/12hr Cool ?'/?'
9-Aug-14 Crystal Springs 50k Woodside 4530'/4530'
17-Aug-14 Run on the Sly 50k Pollock Pines 4075'/4075'
(17-Aug-13) Run-de-Vous 50k
50m		 San Martin ?'/?'
2125'/2125'
(17-Aug-13) Rattlesnake Ultra 50k Newcastle ?'/?'
23-Aug-14 Tamalpa Headlands 50K 50k Muir Beach 7300'/7300'
23-Aug-14 Headwaters Ultra 50k Mount Shasta 4400'/4400'
6-Sep-14 Overlook Endurance 50k/50m/100k Auburn ?'/?'
6-Sep-14 Lost Sierra Endurance Run 50k Graegle 4000'/4000'
7-Sep-14 Robinson Flat 50k Foresthill ?'/?'
12-Sep-14 Lake Tahoe 50m/72m So. Lake Tahoe ?'/?'
13-Sep-14 Headlands 50m/75m Sausalito 10034'/10034'
20-Sep-14 Coastal 50k Stinson Beach 5090'/5090'
27-Sep-14 Berkeley Trail Adventure 50k Oakland 4500'/4500'
(28-Sep-13) Stevens Creek 50k Cupertino 5000'/5000'
4-Oct-14 Weaver Basin 50k Weaverville 4000'/4000'
11-Oct-14 Dick Collins' Firetrails 50m Castro Valley 7820'/7840'
11-Oct-14 Skyline to the Sea 50k Saratoga Gap 3000'/3000'
12-Oct-14 Bizz Johnson 50k Susanville ?'/?'
11-Oct-14 Euchre Bar Massacre 50m Alta 20000'/20000'
12-Oct-14 Boggs Mountain Boogie 50k Cobb ?'/?'
18-Oct-14 Coyote Ridge 50k Muir Beach 7130'/7130'
(19-Oct-13) Rock'n River 50m Auburn 2139'/3474'
25-Oct-14 Whiskeytown 50k Redding 5120'/5120'
25-Oct-14 Stinson Beach 50k Stinson Beach 6498'/6498'
(9-Nov-13) Lake Shasta 28m Lake Shasta ?'/?'
15-Nov-14 Mt. Tam 50k Stinson Beach 7000'/7000'
22-Nov-14 Spirit of Rock 50m Folsom ?'/?'
29-Nov-14 Quad Dipsea 28.4m Mill Valley 9276'/9276'
6-Dec-14 North Face 50k/50m Sausalito ?'/?'
13-Dec-14 Rodeo Beach 50k Sausalito 5980'/5980'
14-Dec-14 HST Fear & Loathing 50k/50m San Francisco 2739'/2743'
14-Dec-14 Woodside Ramble 50k Woodside 4530'/4530'
28-Dec-14 Woodside 50k Woodside 4530'/4530'
(31-Dec-13) New Year's One Day 6hr/12hr/24hr San Francisco 0'/0'
(11-Jan-14) Crystal Springs 50k Woodside 4530'/4530'
(18-Jan-14) Steep Ravine 50k Stinson Beach 5770'/5770'
(18-Jan-14) Pacifica Foothills 50k Pacifica 7090'/7090'
(1-Feb-14) Jed Smith 50k/50m Sacramento 540'/960'
(1-Feb-14) Ford Ord/Ordnance 50k/100k Monterey ?'/?'
(8-Feb-14) Golden Gate 50k Rodeo Beach 6320'/6320'
(8-Feb-14) American Canyon 50k Auburn ?'/?'
(22-Feb-14) Montara Mountain 50k Pacifica 6700'/6700'
(22-Feb-14) FOURmidable 50k Cool ?'/?'
(22-Feb-14) Chabot Trail 50k Castro Valley ?'/?'
(22-Feb-14) Folsom South Side 50k/38m Folsom ?'/?'
(1-Mar-14) Razorback 50k/50m San Martin ?'/?'
(8-Mar-14) Way Too Cool 50k Cool 6113'/6107'
(9-Mar-14) Lake Natoma 50k Folsom ?'/?'
(3-Jan-15) Epiphany Ultra 63k Oakland 2750'/2750'
(10-Jan-15) Fat Ass 50k Saratoga ?

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: 3/10/14) StanJ@Run100s.com