Mosquito Flat Climb – Everest Challenge Recon

Post on the completion of the 10 toughest climbs in California here is the  list

Garmin Player Download

Most Difficult Climbs:

1) Onion Valley —               DONE 6/10/10 !!
2) Horseshoe Meadows — DONE 6/10/10!!
3) White Mountain–          DONE as part of Everest Challenge Stage Race
4) Sherman Pass–             DONE 6/24/10!!
5) Whitney Portal —         DONE 6/10/10!!
6) Mount Baldy–               DONE- too many times to mention
7) Shirley Meadows–        DONE 6/24/10!!
8) South Lake–                  DONE as part of Everest Challenge Stage Race
9) Mount Palomar–           DONE 6/06/10!!
10) Mosquito Flat–           DONE 09/02/10!!

Greatest Elevation Gained:

1) Horseshoe Meadows – 6,234 feet– DONE 6/10/10 !!
2) White Mountain – 6,204 feet
3) 190 – 6,199 feet
4) J21/245/180 – 5,750 feet
5) Mosquito Flat – 5,548 feet  DONE 9/-2/10
6) Dantes View – 5,475 feet
7) South Lake – 5,445 feet
8) Sherman Pass – 5,316 feet– DONE 6/24/10!!
9) Emigrant Pass – 5,309 feet
10) Onion Valley – 5,169 feet DONE 6/10/10!!

Highest Elevation Attained:

1) Mosquito Flat – 10,220 feet- DONE 9/02/10
2) White Mountain – 10,152 feet
3) Horseshoe Meadows – 10,034 feet DONE 6/10/10!!
4) Tioga Pass – 9,945 feet
5) South Lake – 9,852 feet
6) Sonora Pass – 9,624 feet
7) Kaiser Pass – 9,184 feet
8) Onion Valley – 9,163 feet — DONE 6/10/10!!
9) Lake Sabrina – 9,141 feet
10) Sherman Pass – 9,126 feet– DONE 6/24/10!!

Additionally, here is the list of the 10 toughest climbs in the US.

Below is a list of some of the top cycling climb bike rides that are listed in the bookBest Cycling Climbs In The US. The book lists the 100 toughest USA road bike climbs from 1 to 100.

  1. Mt Washington, NH
  2. Haleakala, HI
  3. Onion Valley, CA
  4. Horseshoe Meadows, CA
  5. Mt. Equinox, VT
  6. White MTN, CA
  7. Mt. Baldy, CA
  8. Mt Graham, AZ
  9. Mt. Lemmon, AZ
  10. Palomar Mountain, CA

I hadn’t climbed Mosquito Flat in a while mainly because I didn’t want to make the drive all the way to Bishop, CA. But with Everest Challenge coming at the end of the month, September 25-26, I thought it would be a good idea to climb it.  Mosquito Flat is the highest elevation gained in California and the highest paved road in the Eastern Sierras.

“The road to Mosquito Flat at 10,250′ is the highest paved road in the Sierra Nevada. The climb is 22 miles, average grade is 5%. Maximum grade lower half is 9%, upper half is 11%. There is 280′ of descending along the way, bringing the total climbing to 6,048′.”


I had a rough day on the bike.  I actually had wanted to climb not just Mosquito Flat but South Lake too.  I was feeling like crap so I called it a day after just Mosquito Flat.  Heck I only got 7,000 feet of gain in 65 miles— man I’m a slacker 😉


When you’re not feeling it “out there” then call it a day.  Go home and take of yourself. Have a good meal, get some good rest and maybe even splurge on something– for me that’s ice cream.  Trust me you’re not getting quality training if you’re just turning the pedals around.  And trust me on this one too– you will come back the next day and ride like a rock star!

After a very short section of Hwy 395 left turn to continue climbing to Mosquito Flat

Above 9,000 feet Elevation this is my favorite section of the 20+ mile climb

The trailhead is just behind me at 10,200 feet!

At 9,000 feet Elevation looking up.

New guardrail going up on Lower Rock Creek Rd

It's a climbers Paradise!

Rock Creek Lake

Trailhead at the end of Mosquito Flat climb

6 thoughts on “Mosquito Flat Climb – Everest Challenge Recon

  1. Good post George,
    Did Mosquito a few weeks ago to train for the EC. Unfortunately my knee is giving me problems so most likely will not do EC.
    I wonder if there’s a way to determine what factors contribute to an off day. Maybe it’s just unavoidable.

  2. Nice riding with you yesterday George. My sore throat turned into a full blown laying in bed all day situation today. Sucks, wanted go out again today but I can barely get up.
    Great day, White Mountain is a mean f-er, it got the best of me.
    See ya back in the OC.

  3. Great post, looks like a rock-en ride that I missed. Keep me posted for next time.
    The road to Mosquito Flat at 10,250′ is the highest paved road in the Sierra Nevada, this looks like a great road to ride on and something that I would like to experience.
    Keep the blogging coming and best of training for September, its a high impact month for me also. White Mountain and Knoxville Doubles.

  4. Pingback: CCSD – Cycling Camps San Diego Day 3 | George's Epic Adventures

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s