Some ultras in Northern California (& Nevada) shorter than 100 miles
DateRaceDist.LocationClimb/Descent
14-Dec-19 Rodeo Beach 50k Sausalito 5980'/5980'
14-Dec-19 Snowberry 50k Folsom 1800'/1800'
21-Dec-19 Woodside Ramble 50k Woodside 4530'/4530'
31-Dec-19 New Year's One Day 6hr/12hr/24hr San Francisco 0'/0'
5-Jan-20 Epiphany Ultra 68k Oakland 2750'/2750'
11-Jan-20 Steep Ravine 50k Stinson Beach 5770'/5770'
11-Jan-20 Fat Ass 50k Saratoga ?
11-Jan-20 One Day in Auburn 6hr/12hr/24hr Auburn ?'/?'
18-Jan-20 Dead Truck 50k Auburn 5200'/5200'
19-Jan-20 Crystal Springs 50k Woodside 4530'/4530'
25-Jan-20 Eldrith Gosney's Pure Ultra 50k Mill Valley 6498'/6498'
1-Feb-20 Jed Smith 50k/50m Sacramento 540'/960'
1-Feb-20 Fort Ord/Ordnance 50k/100k Monterey ?'/?'
8-Feb-20 Golden Gate 50k Rodeo Beach 6320'/6320'
15-Feb-20 Second Saratoga Fat Ass 50k Saratoga ?/?
15-Feb-20 FOURmidable 50k Auburn ?'/?'
16-Feb-20 Montara Mountain 50k Pacifica 6700'/6700'
22-Feb-20 Mt. Umunhum 52k San Jose ?'/?'
22-Feb-20 Chabot Trail 50k Castro Valley ?'/?'
29-Feb-20 Salmon Falls 50k Pilot Hill 3500'/3500'
7-Mar-20 Way Too Cool 50k Cool 6113'/6107'
7-Mar-20 Montana de Oro 50k Los Osos ?'/?'
(9-Mar-19) Calero Trail Run 50k San Jose ?'/?'
14-Mar-20 Marin Ultra Challenge 50k/50m Sausalito 6900'/6900' - 11000'/11000'
(16-Mar-19) 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'
29-Mar-20 Ruck a Chuck 50k Foresthill ?'/?'
4-Apr-20 American River 50m Sacramento 3474'/2139'
4-Apr-20 Santa Clarita Ultra 50k Santa Clarita ?'/?'
5-Apr-20 Woodside Crossover 50k Woodside 4610'/4610'
11-Apr-20 Lake Sonoma 50m Geyserville 10500'/10500'
12-Apr-20 Redwood Trail 50k Oakland 5495'/5495'
(13-Apr-19) Diablo Trails Challenge 50k Brentwood ?'/?'
18-Apr-20 Mendocino Coast 50k Mendocino 4708'/4708'
18-Apr-20 SPASM Lake Chabot 50k Castro Valley 2670'/2670'
18-Apr-20 Saratoga Trail 50k Saratoga Gap ?'/?'
18-Apr-20 Mokelumne River 50k Lake Camanche ?'/?'
(20-Apr-19) Napa Valley 50k Calistoga ?'/?'
25-Apr-20 Castle Crags 50k Castella ?'/?'
25-Apr-20 The Canyons 50k/100k Foresthill 9200'/9200' - 14000'/14000'
(27-Apr-19) Sierra Azul Trail Challenge 50k Los Gatos ?'/?'
(28-Apr-19) Forest Ranch 50k Forest Ranch ?'/?'
2-May-20 Miwok Trail 100k Stinson Beach 11628'/11628'
2-May-20 Armstrong Redwoods 50k Guerneville ?'/?'
2-May-20 Folsom Lake 50k Folsom 2030'/2030'
3-May-20 Horseshoe Lake 50k Palo Alto 4560'/4560'
9-May-20 Quicksilver 50k/100k San Jose 6000'/12000'
9-May-20 Grizzly Peak 50k Berkeley 6760'/6760'
(11-May-19) Trail Run at Sly Park 50k Pollock Pines ?'/?'
16-May-20 San Francisco 50k/50m Sausalito 9565'/9565'
16-May-20 Mt. Diablo 50k Clayton ?'/?'
16-May-20 Silver State 50k/50m Reno, NV 5800'/6100' - 9200'/9200'
(18-May-19) Ancient Redwood Running Festival 6hr/12hr Philo ?'/?'
17-May-20 Ohlone Wilderness 50k Fremont 8530'/8160'
30-May-20 Bishop High Sierra 50k/50m/100k Bishop ?'/?'
30-May-20 The Ridge 62k Lagunitas ?'/?'
30-May-20 4MPH Challenge ? Whiskeytown ?'/?'
31-May-20 Big Basin 50k Los Gatos 5790'/5790'
(1-Jun-19) The Loco Challenge 50k/100k Butte Meadows ?'/?'
(1-Jun-19) Calero Trail Run 50k San Jose ?'/?'
14-Jun-20 Cinderella 50k Oakland 5495'/5495'
20-Jun-20 San Lorenzo River 50k Santa Cruz 5175'/5175'
(22-Jun-19) Rodeo Valley 50k Sausalito 6000'/6000'
(6-Jul-19) Dirty Dozen 6hr/12hr Pinole ?'/?'
(6-Jul-19) Lovers' Leap of Faith 50k/50m Strawberry ?'/?'/?
11-Jul-20 Salt Point 50k Jenner ?'/?'
18-Jul-20 Tahoe Rim Trail 55k/50m Lake Tahoe, NV 6895'/6895' - 9894'/9894'
(20-Jul-19) Kirkwood's Thunder Mountain Trail Challenge 50k Kirkwood ?'/?'
25-Jul-20 Redwood Trail 50k Oakland 5495'/5495'
25-Jul-20 Pacifica Trail 50k Pacifica ?'/?'
(27-Jul-19) Pioneer Spirit 50m Auburn-to-Folsom ?'/?'
(27-Jul-19) Worth the Hurt 52m San Francisco ?'/?'
1-Aug-20 Crystal Springs 50k Woodside 4530'/4530'
(4-Aug-19) Skyline 50k Castro Valley 4740'/4740'
8-Aug-20 Coastal 50k Stinson Beach 5090'/5090'
8-Aug-20 The Groves 50k Loma Mar ?'/?'
(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) Run-de-Vous 50k/50m San Martin ?'/?'
(17-Aug-19) Trail Run at Sly Park 50k Pollock Pines ?'/?'
22-Aug-20 Headlands 50m/75m Sausalito 11410'/11410'
23-Aug-20 Diablo 50k Clayton 7990'/7990'
(24-Aug-19) Castle Peak 100k Truckee ?'/?'
(24-Aug-19) Golden State 50k Monterey ?'/?'
29-Aug-20 Tamalpa Headlands 50K 50k Rodeo Beach 6521'/6521'
(14-Sep-19) Echo Summit Trail Challenge 50k Echo Summit ?'/?'
19-Sep-20 Golden Gate 50k Rodeo Beach 6320'/6320'
(21-Sep-19) Berkeley Trail Adventure 50k Oakland 4500'/4500'
(22-Sep-19) Whiskey Hill Redwood Run 50k Woodside ?'/?'
(28-Sep-19) Overlook 50k/50m Foresthill ?'/?'
(28-Sep-19) Headwaters Ultra 50k Mount Shasta 5600'/5600'
3-Oct-20 Skyline to the Sea 50k Saratoga Gap 3000'/3000'
(5-Oct-19) Bay Ridge/Dick Collins 50m/100k Castro Valley 8500'/8500' - 11000'/11000;
10-Oct-20 Ruth Anderson Memorial Endurance Run 50k/50m San Francisco 1450'/1450'
10-Oct-20 Ultra Trails Lake Tahoe (UTLT) 50k/50m Lake Tahoe ?'/?'
(12-Oct-19) Lake Tahoe 50m/72m So. Lake Tahoe ?'/?'
(12-Oct-19) Euchre Bar Massacre 50mi Foresthill 20000'/20000'
11-Oct-20 Bizz Johnson 50k Susanville ?'/?'
17-Oct-20 Marine Mammal 60km Sausalito 7602'/7602'
(19-Oct-19) Sac River 55k Redding ?'/?'
(26-Oct-19) Vista Verde Skyline 50km Woodside ?'/?'
31-Oct-20 Woodside 50k Woodside 4530'/4530'
7-Nov-20 Lake Chabot 50k Castro Valley 2670'/2670'
(9-Nov-19) Mt. Tam 50k Stinson Beach 7000'/7000'
(16-Nov-19) North Face 50k/50m Sausalito ?'/?'
(16-Nov-19) Two Peaks 50k/50m Redding ?'/?'
(16-Nov-19) Trail Run at Sly Park 50k Pollock Pines ?'/?'
(23-Nov-19) Meat Grinder 50k Newcastle 3300'/3300'
28-Nov-20 Quad Dipsea 28.4m Mill Valley 9276'/9276'
(30-Nov-19) Mountain Brow House 50k Woodside ?'/?'
6-Dec-20 HST Fear & Loathing 50k/50m San Francisco 2739'/2743'
(7-Dec-19) San Joaquin River Trail 50km/100km Friant ?'/?'
(7-Dec-19) Spooner's Cove 50k Los Osos 6400'/6400'
12-Dec-20 Rodeo Beach 50k Sausalito 5980'/5980'

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: 12/12/19) StanJ@Run100s.com