Some ultras in Northern California (& Nevada) shorter than 100 miles
DateRaceDist.LocationClimb/Descent
23-Jun-18 Rodeo Valley 50k Sausalito 6000'/6000'
24-Jun-18 San Lorenzo River 50k Santa Cruz 5175'/5175'
1-Jul-18 Run with the Ponies 32m Georgetown ?'/?'
7-Jul-18 Golden Gate 50k Rodeo Beach 6320'/6320'
7-Jul-18 Dirty Dozen 6hr/12hr Pinole ?'/?'
7-Jul-18 Lovers Leap of Faith 50k/50m Strawberry ?'/?'/?
14-Jul-18 Salt Point 50k Jenner ?'/?'
14-Jul-18 Rancho Run 50k Morgan Hill ?'/?'
15-Jul-18 SPASM Lake Chabot 50k Castro Valley 2670'/2670'
21-Jul-18 Tahoe Rim Trail 55k/50m Lake Tahoe, NV 6895'/6895' - 9894'/9894'
28-Jul-18 Pacifica Trail 50k Pacifica ?'/?'
28-Jul-18 Pioneer Spirit 50m Auburn-to-Folsom ?'/?'
29-Jul-18 Worth the Hurt 52m San Francisco ?'/?'
4-Aug-18 Sierra Crest 50k Tahoe Donner ?'/?'
4-Aug-18 The Ridge 62k Lagunitas ?'/?'
5-Aug-18 Skyline 50k Castro Valley 4740'/4740'
5-Aug-18 Crystal Springs 50k Woodside 4530'/4530'
11-Aug-18 Cinderella 50k Oakland 5495'/5495'
11-Aug-18 Trinity Alps 55k Lake Siskiyou ?'/?'
11-Aug-18 Cool Moon 50m/100k Cool ?'/?'
18-Aug-18 Castle Peak 100k Truckee ?'/?'
18-Aug-18 Mount Madonna 50k Watsonville ?'/?'
18-Aug-18 Golden State 50k Monterey ?'/?'
18-Aug-18 Run-de-Vous 50k/50m San Martin ?'/?'
18-Aug-18 Robinson Flat 50k Foresthill ?'/?'
25-Aug-18 Tamalpa Headlands 50K 50k Muir Beach 7300'/7300'
25-Aug-18 Almaden Hills 50k San Jose ?'/?'
26-Aug-18 Diablo 50k Clayton 7990'/7990'
1-Sep-18 Headlands 50m/75m Sausalito 10034'/10034'
15-Sep-18 Folsom Lake Ultra 110k Auburn 6228'/6228'
15-Sep-18 Echo Summit Trail Challenge 50k Echo Summit ?'/?'
15-Sep-18 Echo Summit 50k Echo Summit ?'/?'/?
22-Sep-18 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'
29-Sep-18 Overlook 50k/50m Foresthill ?'/?'
29-Sep-18 Headwaters Ultra 50k Mount Shasta 5600'/5600'
6-Oct-18 Bay Ridge Trail 50m/100k Castro Valley ?'/?'
6-Oct-18 Bizz Johnson 50k Susanville ?'/?'
6-Oct-18 Skyline to the Sea 50k Saratoga Gap 3000'/3000'
12-Oct-18 Lake Tahoe 50m/72m So. Lake Tahoe ?'/?'
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 ?'/?'
3-Nov-18 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'
17-Nov-18 Trail Run at Sly Park 50k Pollock Pines ?'/?'
17-Nov-18 North Face 50k/50m Sausalito ?'/?'
24-Nov-18 Quad Dipsea 28.4m Mill Valley 9276'/9276'
1-Dec-18 Vista Verde Skyline 50km Woodside ?'/?'
1-Dec-18 Calero Run 50km San Jose ?'/?'
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 Woodside Ramble 50k Woodside 4530'/4530'
31-Dec-18 New Year's One Day 6hr/12hr/24hr San Francisco 0'/0'
(6-Jan-18) Eldrith Gosney's Pure Ultra 50k Mill valley 6498'/6498'
(7-Jan-18) Epiphany Ultra 67k Oakland 2750'/2750'
(13-Jan-18) Fat Ass 50k Saratoga ?
(13-Jan-18) Steep Ravine 50k Stinson Beach 5770'/5770'
(21-Jan-18) Crystal Springs 50k Woodside 4530'/4530'
(27-Jan-18) Folsom Lake Sweet Water 50k Folsom ?'/?'
(3-Feb-18) Jed Smith 50k/50m Sacramento 540'/960'
(3-Feb-18) Fort Ord/Ordnance 50k/100k Monterey ?'/?'
(10-Feb-18) Golden Gate 50k Rodeo Beach 6320'/6320'
(17-Feb-18) FOURmidable 50k Auburn ?'/?'
(17-Feb-18) Chabot Trail 50k Castro Valley ?'/?'
(18-Feb-18) Montara Mountain 50k Pacifica 6700'/6700'
(24-Feb-18) Mt. Umunhum 52k San Jose ?'/?'
(24-Feb-18) Salmon Falls 50k Pilot Hill 3500'/3500'
2-Mar-19 Way Too Cool 50k Cool 6113'/6107'
(10-Mar-18) Marin Ultra Challenge 50k/50m Sausalito 6900'/6900' - 11000'/11000'
(17-Mar-18) Montana de Oro 50k Los Osos ?'/?'
(17-Mar-18) 4MPH Challenge ? Whiskeytown ?'/?'
(17-Mar-18) Ruck a Chuck 50k Foresthill ?'/?'
(17-Mar-18) Folsom South Side 50k/38mi Folsom ?'/?'
(31-Mar-18) San Jose Trail 50k San Jose ?'/?'
6-Apr-19 American River 50m Sacramento 3474'/2139'
(7-Apr-18) Napa Valley 50k Calistoga ?'/?'
(7-Apr-18) Woodside Crossover 50k Woodside 4610'/4610'
13-Apr-19 Lake Sonoma 50m Geyserville 10500'/10500'
14-Apr-18 K2 Challenge 6hr Auburn ?'/?'
14-Apr-18 Diablo Trails Challenge 50k Brentwood ?'/?'
15-Apr-18 Grizzly Peak 50k Berkeley 6760'/6760'
(21-Apr-18) Ruth Anderson Memorial Endurance Run 50k/50m/100k San Francisco 1450'/1450'
(21-Apr-18) Mendocino 50k Mendocino 4708'/4708'
(21-Apr-18) Folsom Lake 50k Folsom 2030'/2030'
(21-Apr-18) Mokelumne River 50k/50m Lake Camanche ?'/?'
(22-Apr-17) Razorback 50k/50m/100k San Martin ?'/?'
27-Apr-19 The Canyons 50k/100k Foresthill 9200'/9200' - 14000'/14000'
(28-Apr-18) Whiskeytown Waterfalls 50k Whiskeytown 7500'/7500'
(28-Apr-18) Sierra Azul Trail Challenge 50k Los Gatos ?'/?'
4-May-19 Miwok Trail 100k Stinson Beach 11628'/11628'
(5-May-18) Armstrong Redwoods 50k Guerneville ?'/?'
(5-May-18) Sugarloaf Ridge 50k Santa Rosa 9800'/9800'
(6-May-18) Horseshoe Lake 50k Palo Alto 4560'/4560'
(12-May-18) Quicksilver 50k/100k San Jose 6000'/12000'
(12-May-18) Cinderella 50k Oakland 5495'/5495'
(12-May-18) Trail Run at Sly Park 50k Pollock Pines ?'/?'
(19-May-18) Ancient Redwood Running Festival 6hr/12hr Philo ?'/?'
(19-May-18) Mt. Diablo 50k Clayton ?'/?'
(19-May-18) San Francisco 50k/50m Sausalito 9565'/9565'
(19-May-18) Silver State 50k/50m Reno, NV 5800'/6100' - 9200'/9200'
19-May-19 Ohlone Wilderness 50k Fremont 8530'/8160'
(2-Jun-18) Bishop High Sierra Ultras 50k/50m/100k Bishop ?'/?'
(2-Jun-18) San Francisco Summer Solstice 6hr/12hr/24hr San Francisco 0'/0'
(2-Jun-18) Calero Run 50k/50m San Jose ?'/?'
(3-Jun-18) Big Basin 50k Los Gatos 5790'/5790'
(16-Jun-18) Canyon Meadow 50k Oakland 3812'/3812'

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: 6/17/18) StanJ@Run100s.com