Some ultras in Northern California (& Nevada) shorter than 100 miles
DateRaceDist.LocationClimb/Descent
27-Apr-19 The Canyons 50k/100k Foresthill 9200'/9200' - 14000'/14000'
27-Apr-19 Sierra Azul Trail Challenge 50k Los Gatos ?'/?'
(28-Apr-18) Whiskeytown Waterfalls 50k Whiskeytown 7500'/7500'
4-May-19 Miwok Trail 100k Stinson Beach 11628'/11628'
4-May-19 Armstrong Redwoods 50k Guerneville ?'/?'
5-May-19 Horseshoe Lake 50k Palo Alto 4560'/4560'
11-May-19 Quicksilver 50k/100k San Jose 6000'/12000'
11-May-19 Cinderella 50k Oakland 5495'/5495'
11-May-19 Trail Run at Sly Park 50k Pollock Pines ?'/?'
18-May-19 Mt. Diablo 50k Clayton ?'/?'
18-May-19 San Francisco 50k/50m Sausalito 9565'/9565'
18-May-19 Silver State 50k/50m Reno, NV 5800'/6100' - 9200'/9200'
18-May-19 Ancient Redwood Running Festival 6hr/12hr Philo ?'/?'
19-May-19 Ohlone Wilderness 50k Fremont 8530'/8160'
1-Jun-19 The Ridge 62k Lagunitas ?'/?'
1-Jun-19 Calero Trail Run 50k San Jose ?'/?'
(2-Jun-18) Bishop High Sierra Ultras 50k/50m/100k Bishop ?'/?'
2-Jun-19 Big Basin 50k Los Gatos 5790'/5790'
15-Jun-19 Canyon Meadow 50k Oakland 3812'/3812'
22-Jun-19 Rodeo Valley 50k Sausalito 6000'/6000'
22-Jun-19 San Lorenzo River 50k Santa Cruz 5175'/5175'
(1-Jul-18) Run with the Ponies 32m Georgetown ?'/?'
6-Jul-19 Golden Gate 50k Rodeo Beach 6320'/6320'
6-Jul-19 Lovers Leap of Faith 50k/50m Strawberry ?'/?'/?
(7-Jul-18) Dirty Dozen 6hr/12hr Pinole ?'/?'
13-Jul-19 Salt Point 50k Jenner ?'/?'
13-Jul-19 SPASM Lake Chabot 50k Castro Valley 2670'/2670'
20-Jul-19 Pacifica Trail 50k Pacifica ?'/?'
20-Jul-19 Tahoe Rim Trail 55k/50m Lake Tahoe, NV 6895'/6895' - 9894'/9894'
20-Jul-19 Kirkwood's Thunder Mountain Trail Challenge 50k Kirkwood ?'/?'
27-Jul-19 Pioneer Spirit 50m Auburn-to-Folsom ?'/?'
(29-Jul-18) Worth the Hurt 52m San Francisco ?'/?'
4-Aug-19 Skyline 50k Castro Valley 4740'/4740'
(4-Aug-18) Sierra Crest 50k Tahoe Donner ?'/?'
4-Aug-19 Crystal Springs 50k Woodside 4530'/4530'
10-Aug-19 Cinderella 50k Oakland 5495'/5495'
(11-Aug-18) Trinity Alps 55k Lake Siskiyou ?'/?'
10-Aug-19 Cool Moon 50m/100k Cool 8000'/11000'
10-Aug-19 Kirkwood to Strawberry Ultra Trail Challenge 50k/50m/100k Kirkwood ?'/?'
17-Aug-19 Mount Madonna 50k Watsonville ?'/?'
17-Aug-19 Trail Run at Sly Park 50k Pollock Pines ?'/?'
(18-Aug-18) Castle Peak 100k Truckee ?'/?'
(18-Aug-18) Run-de-Vous 50k/50m San Martin ?'/?'
(18-Aug-18) Robinson Flat 50k Foresthill ?'/?'
24-Aug-19 Tamalpa Headlands 50K 50k Rodeo Beach 6521'/6521'
24-Aug-19 Golden State 50k Monterey ?'/?'
25-Aug-19 Diablo 50k Clayton 7990'/7990'
7-Sep-19 Strawberry to Kirkwood Trail Challenge 50k Kyburz ?'/?'
14-Sep-19 Headlands 50m/75m Sausalito 10034'/10034'
14-Sep-19 Folsom Lake Ultra 110k Auburn 6228'/6228'
14-Sep-19 Echo Summit Trail Challenge 50k Echo Summit ?'/?'
(16-Sep-18) Whiskey Hill Redwood Run 50k Woodside ?'/?'
21-Sep-19 Coastal 50k Stinson Beach 5090'/5090'
(22-Sep-18) Berkeley Trail Adventure 50k Oakland 4500'/4500'
(22-Sep-18) Stevens Creek 50k Cupertino 5000'/5000'
28-Sep-19 Overlook 50k/50m Foresthill ?'/?'
(29-Sep-18) Headwaters Ultra 50k Mount Shasta 5600'/5600'
5-Oct-19 Skyline to the Sea 50k Saratoga Gap 3000'/3000'
5-Oct-19 Bay Ridge/Dick Collins 50m/100k Castro Valley 7000'/7000' - 8500'/8500;
12-Oct-19 Ruth Anderson Memorial Endurance Run 50k/50m/100k San Francisco 1450'/1450'
(12-Oct-18) Lake Tahoe 50m/72m So. Lake Tahoe ?'/?'
13-Oct-19 Bizz Johnson 50k Susanville ?'/?'
(13-Oct-18) Coyote Ridge 50k Muir Beach 7130'/7130'
(13-Oct-18) Santa Barbara 100k 100k Santa Barbara 13530'/13530'
(13-Oct-18) Euchre Bar Massacre 50mi Foresthill 20000'/20000'
(13-Oct-18) Sac River 55k Redding ?'/?'
2-Nov-19 Woodside 50k Woodside 4530'/4530'
(3-Nov-18) Lake Chabot 50k Castro Valley 2670'/2670'
(10-Nov-18) Mt. Tam 50k Stinson Beach 7000'/7000'
(10-Nov-18) Two Peaks 50k/50m Redding ?'/?'
7-Dec-19 Rodeo Beach 50k Sausalito 5980'/5980'
16-Nov-19 North Face 50k/50m Sausalito ?'/?'
16-Nov-19 Trail Run at Sly Park 50k Pollock Pines ?'/?'
(17-Nov-18) Meat Grinder 50k Newcastle 3300'/3300'
30-Nov-19 Quad Dipsea 28.4m Mill Valley 9276'/9276'
(1-Dec-18) Vista Verde Skyline 50km Woodside ?'/?'
(1-Dec-18) San Joaquin River Trail 50km/100km Friant ?'/?'
(8-Dec-18) HST Fear & Loathing 50k/50m San Francisco 2739'/2743'
(8-Dec-18) Rodeo Beach 50k Sausalito 5980'/5980'
(9-Dec-18) Spooner's Cove 50k Los Osos 6400'/6400'
(15-Dec-18) Snowberry Creek 50k Folsom 2700'/2700'
(15-Dec-18) Woodside Ramble 50k Woodside 4530'/4530'
(5-Jan-19) New Year's One Day 6hr/12hr/24hr San Francisco 0'/0'
(6-Jan-19) Epiphany Ultra 68k Oakland 2750'/2750'
(12-Jan-19) Fat Ass 50k Saratoga ?
(12-Jan-19) Steep Ravine 50k Stinson Beach 5770'/5770'
(12-Jan-19) One Day in Auburn 6hr/12hr/24hr Auburn ?'/?'
(19-Jan-19) Dead Truck 50k Auburn 5300'/5300'
(20-Jan-19) Crystal Springs 50k Woodside 4530'/4530'
(2-Feb-19) Eldrith Gosney's Pure Ultra 50k Mill Valley 6498'/6498'
(2-Feb-19) Jed Smith 50k/50m Sacramento 540'/960'
(2-Feb-19) Fort Ord/Ordnance 50k/100k Monterey ?'/?'
(9-Feb-19) Golden Gate 50k Rodeo Beach 6320'/6320'
(16-Feb-19) Chabot Trail 50k Castro Valley ?'/?'
(16-Feb-19) FOURmidable 50k Auburn ?'/?'
(17-Feb-19) Montara Mountain 50k Pacifica 6700'/6700'
(23-Feb-19) Mt. Umunhum 52k San Jose ?'/?'
(23-Feb-19) Second Saratoga Fat Ass 50k Saratoga ?/?
(23-Feb-19) Salmon Falls 50k Pilot Hill 3500'/3500'
(2-Mar-19) Way Too Cool 50k Cool 6113'/6107'
(9-Mar-19) Montana de Oro 50k Los Osos ?'/?'
(9-Mar-19) Marin Ultra Challenge 50k/50m Sausalito 6900'/6900' - 11000'/11000'
(9-Mar-19) Calero Trail Run 50k San Jose ?'/?'
(16-Mar-19) Ruck a Chuck 50k Foresthill ?'/?'
(16-Mar-19) Folsom South Side 50k/38mi Folsom ?'/?'
(18-Mar-19) 4MPH Challenge ? Whiskeytown ?'/?'
(23-Mar-19) San Jose Trail 50k San Jose ?'/?'
(6-Apr-19) American River 50m Sacramento 3474'/2139'
(6-Apr-19) Woodside Crossover 50k Woodside 4610'/4610'
11-Apr-20 Lake Sonoma 50m Geyserville 10500'/10500'
(13-Apr-19) Diablo Trails Challenge 50k Brentwood ?'/?'
(14-Apr-19) Grizzly Peak 50k Berkeley 6760'/6760'
(20-Apr-19) Mendocino Coast 50k Mendocino 4708'/4708'
(20-Apr-19) Napa Valley 50k Calistoga ?'/?'
(20-Apr-19) Folsom Lake 50k Folsom 2030'/2030'
(20-Apr-19) Mokelumne River 50k/50m Lake Camanche ?'/?'

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: 4/22/19) StanJ@Run100s.com