Some ultras in Northern California (& Nevada) shorter than 100 miles
DateRaceDist.LocationClimb/Descent
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 ?'/?'
21-Sep-19 Coastal 50k Stinson Beach 5090'/5090'
21-Sep-19 Berkeley Trail Adventure 50k Oakland 4500'/4500'
(22-Sep-18) Stevens Creek 50k Cupertino 5000'/5000'
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'
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) 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 ?'/?'
26-Oct-19 Vista Verde Skyline 50km Woodside ?'/?'
2-Nov-19 Woodside 50k Woodside 4530'/4530'
9-Nov-19 Lake Chabot 50k Castro Valley 2670'/2670'
9-Nov-19 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) San Joaquin River Trail 50km/100km Friant ?'/?'
7-Dec-19 Spooner's Cove 50k Los Osos 6400'/6400'
8-Dec-19 HST Fear & Loathing 50k/50m San Francisco 2739'/2743'
(8-Dec-18) Rodeo Beach 50k Sausalito 5980'/5980'
(15-Dec-18) Snowberry Creek 50k Folsom 2700'/2700'
21-Dec-19 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'
7-Mar-20 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 ?'/?'
4-Apr-20 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 ?'/?'
(20-Apr-19) Castle Crags 50k Castella ?'/?'
(27-Apr-19) 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'
(4-May-19) Armstrong Redwoods 50k Guerneville ?'/?'
(5-May-19) Horseshoe Lake 50k Palo Alto 4560'/4560'
9-May-20 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 ?'/?'
17-May-20 Ohlone Wilderness 50k Fremont 8530'/8160'
(1-Jun-19) Bishop High Sierra 50k/50m/100k Bishop ?'/?'
(1-Jun-19) The Ridge 62k Lagunitas ?'/?'
(1-Jun-19) The Loco Challenge 50k/100k Butte Meadows ?'/?'
(1-Jun-19) Calero Trail Run 50k San Jose ?'/?'
(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'
(6-Jul-19) Dirty Dozen 6hr/12hr Pinole ?'/?'
(6-Jul-19) Lovers' Leap of Faith 50k/50m Strawberry ?'/?'/?
(13-Jul-19) Golden Gate 50k Rodeo Beach 6320'/6320'
(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 ?'/?'
(27-Jul-19) Worth the Hurt 52m San Francisco ?'/?'
(3-Aug-19) The Groves 50k Loma Mar ?'/?'
(4-Aug-19) Skyline 50k Castro Valley 4740'/4740'
(4-Aug-19) Crystal Springs 50k Woodside 4530'/4530'
(10-Aug-19) Redwood Trail 50k Oakland 5495'/5495'
(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) Mount Madonna 50k Watsonville ?'/?'
(17-Aug-19) Trail Run at Sly Park 50k Pollock Pines ?'/?'
(24-Aug-19) Tamalpa Headlands 50K 50k Rodeo Beach 6521'/6521'
(24-Aug-19) Castle Peak 100k Truckee ?'/?'
(24-Aug-19) Golden State 50k Monterey ?'/?'
(25-Aug-19) Diablo 50k Clayton 7990'/7990'

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: 8/25/19) StanJ@Run100s.com