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Some ultras in Northern California (& Nevada) shorter than 100 miles
DateRaceDist.LocationClimb/Descent
23-Oct-21 Quicksilver 50k/100k San Jose 6000'/12000'
6-Nov-21 Woodside 50k Woodside 4530'/4530'
6-Nov-21 Lake Chabot 50k Castro Valley 2670'/2670'
6-Nov-21 Annual Almaden Hills Run 50k San Jose ?'/?'
13-Nov-21 Mt. Tam 50k Stinson Beach 7000'/7000'
(14-Nov-20) Two Peaks 50k/50m Redding ?'/?'
20-Nov-21 Trail Run at Sly Park 50k Pollock Pines ?'/?'
(21-Nov-20) Headlands 50m/100k Sausalito 11410'/11410'
27-Nov-21 Quad Dipsea 28.4m Mill Valley 9276'/9276'
27-Nov-21 Napa Valley 50k Calistoga ?'/?'
4-Dec-21 Calero Trail Run 50k San Jose ?'/?'
4-Dec-21 San Joaquin River Trail 50km/100km Friant ?'/?'
5-Dec-21 HST Fear & Loathing 50k/50m San Francisco 2739'/2743'
11-Dec-21 Rodeo Beach 50k Sausalito 5980'/5980'
18-Dec-21 Woodside Ramble 50k Woodside 4530'/4530'
31-Dec-21 New Year's One Day 6hr/12hr/24hr San Francisco 0'/0'
9-Jan-22 Epiphany Ultra 69k Oakland 2750'/2750'
15-Jan-22 Fat Ass 50k Saratoga ?
(11-Jan-20) One Day in Auburn 6hr/12hr/24hr Auburn ?'/?'
16-Jan-22 Crystal Springs 50k Woodside 4530'/4530'
(18-Jan-20) Fremont 50k Fremont ?'/?'
(18-Jan-20) Dead Truck 50k Auburn 5200'/5200'
(25-Jan-20) Eldrith Gosney's Pure Ultra 50k Mill Valley 6498'/6498'
5-Feb-22 Golden Gate 50k Rodeo Beach 6320'/6320'
(8-Feb-20) Calero Trail Run 50k San Jose ?'/?'
13-Feb-22 Montara Mountain 50k Pacifica 6700'/6700'
(15-Feb-20) Second Saratoga Fat Ass 50k Saratoga ?/?
19-Feb-22 FOURmidable 50k Auburn ?'/?'
(20-Feb-21) Spartan Trail 50k Saratoga ?'/?'
(22-Feb-20) Mt. Umunhum 52k San Jose ?'/?'
(22-Feb-20) Chabot Trail 50k Castro Valley ?'/?'
(27-Feb-21) Jed Smith 50k/50m Sacramento 540'/960'
(29-Feb-20) Salmon Falls 50k Pilot Hill 3500'/3500'
(6-Mar-20) Way Too Cool 50k Cool 6113'/6107'
(7-Mar-20) Montana de Oro 50k Los Osos ?'/?'
(14-Mar-20) Pioneer Spirit 50m Auburn-to-Folsom ?'/?'
(14-Mar-20) Marin Ultra Challenge 50k/50m Sausalito 6900'/6900' - 11000'/11000'
(14-Mar-20) Folsom South Side 50k/38mi Folsom ?'/?'
(21-Mar-20) San Jose Trail 50k San Jose ?'/?'
(28-Mar-20) Red Dragon 55k Pilot Hill 5200'/5200'
2-Apr-22 Redwood Trail 50k Oakland 5495'/5495'
(5-Apr-20) Woodside Crossover 50k Woodside 4610'/4610'
9-Apr-22 Lake Sonoma 50m Healdsburg 10500'/10500'
(11-Apr-20) Diablo Trails Challenge 50k Brentwood ?'/?'
16-Apr-22 SPASM Lake Chabot 50k Castro Valley 2670'/2670'
(18-Apr-20) Saratoga Trail 50k Saratoga Gap ?'/?'
(18-Apr-20) Mokelumne River 50k Lake Camanche ?'/?'
(19-Apr-20) Forest Ranch 50k Forest Ranch ?'/?'
23-Apr-22 Mendocino Coast 50k Mendocino 4708'/4708'
23-Apr-22 The Canyons 50k/100k Foresthill 9200'/9200' - 14000'/14000'
(24-Apr-21) Folsom Lake 50k Folsom 2030'/2030'
(25-Apr-20) Castle Crags 50k Castella ?'/?'
(25-Apr-20) Sierra Azul Trail Challenge 50k Los Gatos ?'/?'
1-May-22 Horseshoe Lake 50k Palo Alto 4560'/4560'
(3-May-20) Red Hills Ramble 50k Tuolomne ?'/?'
7-May-22 Miwok Trail 100k Stinson Beach 11628'/11628'
14-May-22 Quicksilver 50k/100k San Jose 6000'/12000'
(8-May-21) American River 50m Sacramento 3474'/2139'
(9-May-20) Trail Run at Sly Park 50k Pollock Pines ?'/?'
14-May-22 Grizzly Peak 50k Berkeley 6760'/6760'
(15-May-21) Silver State 50k/50m Reno, NV 5800'/6100' - 9200'/9200'
15-May-22 Ohlone Wilderness 50k Fremont 8530'/8160'
(16-May-20) Mt. Diablo 50k Clayton ?'/?'
21-May-22 San Francisco 50k/50m Sausalito 9565'/9565'
(22-May-21) Bishop High Sierra 50k/50m/100k Bishop ?'/?'
(22-May-21) The Cruel 50K 50k Pacifica ?'/?'
28-May-22 Lake Sonoma 100K 100m Healdsburg ?'/?'
(29-May-21) 4MPH Challenge ? Whiskeytown ?'/?'
(30-May-20) The Ridge 62k Lagunitas ?'/?'
(5-Jun-21) The Loco Challenge 50k/100k Butte Meadows ?'/?'
(5-Jun-21) Ruck a Chuck 50k Foresthill ?'/?'
(11-Jun-21) Last Runner Running 24hr Cool ?'/?'
11-Jun-22 Cinderella 50k Oakland 5495'/5495'
18-Jun-22 San Lorenzo River 50k Santa Cruz 5175'/5175'
(26-Jun-21) Mt. Shasta 50k/50m Mt. Shasta ?'/?'
(26-Jun-21) Rodeo Valley 50k Sausalito 6000'/6000'
(3-Jul-21) Lovers' Leap of Faith 50k Strawberry ?'/?'
9-Jul-22 Golden Gate 50k Rodeo Beach 6320'/6320'
(17-Jul-21) Tahoe Rim Trail 55k/50m Lake Tahoe, NV 6895'/6895' - 9894'/9894'
(17-Jul-21) Salt Point 50k Jenner ?'/?'
(24-Jul-21) Fort Ord 50k Monterey ?'/?'
(24-Jul-21) Kirkwood Thunder Mountain Trail Challenge 50k Kirkwood ?'/?'
30-Jul-22 Crystal Springs 50k Woodside 4530'/4530'
(1-Aug-21) Skyline 50k Castro Valley 4740'/4740'
6-Aug-22 Redwood Trail 50k Oakland 5495'/5495'
(7-Aug-21) Kirkwood Mountain Ultras 50k/50m/100k/100m Kirkwood ?'/?'
(14-Aug-21) Castle Peak 100k Truckee ?'/?'
(14-Aug-21) Cool Moon 50m/100k Cool 8000'/11000'
(21-Aug-21) Golden State 50k Monterey ?'/?'
(21-Aug-21) Trail Run at Sly Park 50k Pollock Pines ?'/?'
(28-Aug-21) Mendocino Running Festival 6hr/12hr Mendocino ?'/?'
(29-Aug-20) Tamalpa Headlands 50K 50k Rodeo Beach 6521'/6521'
3-Sep-22 Bizz Johnson 50k Susanville ?'/?'
(4-Sep-21) High Sierra 50k Kyburz ?'/?'
(11-Sep-21) Overlook 50k/50m Foresthill ?'/?'
18-Sep-22 Diablo 50k Clayton 7990'/7990'
(18-Sep-21) Golden Gate 50k/100km San Francisco ?'/?'
(18-Sep-21) Worth the Hurt 52m San Francisco ?'/?'
(18-Sep-21) Berkeley Trail Adventure 50k Oakland 4500'/4500'
(18-Sep-21) Almaden Hills Trail Run 50k San Jose ?'/?'
(25-Sep-21) Bay Ridge/Dick Collins 50m/100k Castro Valley 8500'/8500' - 11000'/11000;
(25-Sep-21) Headwaters Ultra 56k Mount Shasta 5600'/5600'
(25-Sep-21) Ultra Trails Lake Tahoe (UTLT) 50k/50m Lake Tahoe ?'/?'
(2-Oct-21) No'to'mom 50k/100k Sacramento ?'/?'
(2-Oct-21) Lovers' Leap of Faith 50k Strawberry ?'/?'
(3-Oct-20) Echo Summit Trail Challenge 50k Echo Summit ?'/?'
8-Oct-22 Ruth Anderson Memorial Endurance Run 50k/50m San Francisco 1450'/1450'
(9-Oct-21) Tahoe Midnight Express 50m/72m So. Lake Tahoe ?'/?'
(16-Oct-21) Spooner's Cove 50k Los Osos 6400'/6400'
(16-Oct-21) Euchre Bar Massacre 50mi Foresthill 20000'/20000'

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: 10/21/21) StanJ@Run100s.com