Bay
To
Lake

A self organized annual 100km relay race in the San Francisco Bay Area

Established in 2022

The Community Driven Athletic Event
Of The Year

  • Run with your friends in a team relay race from San Francisco to somewhere far, far away,
  • This is organized by a group of local runners trying to have a good time,
  • So have fun, stay hydrated, work together, and try not to get too lost ✌️

About

What is this?

Bay To Lake is a self organized long distance relay race.
This is not an official event.
You are responsible for your own safety and the safety of other participants.

How do I participate?

You can sign up as part of a team, or individually and we will try to place you on a team.
Team size is 6-8 athletes with 2 optional support drivers.
The cost to participate is around $45-$65 per athlete.

What happens during the event?

Your team is given the 100km route about a week before race day, it will be broken into segments that are about 5km each (2-3 miles).
Every athlete should expect to run at least 15km (10 miles) for their team.
You are encouraged to send more than one athlete per segment, or complete the segments with other teams for safety.
After you send the athlete(s), drive the rest of the team to the next checkpoint to ensure you are there when your athlete(s) arrive.
Roads will not be closed and the route will not be marked, so be aware of your surroundings at all times.
Follow the provided route to the best of your ability. You can skip segments if they feel unsafe or if you are far behind the rest of the pack. You receive a 15 minute/mile time penalty per mile skipped.
You are responsible for avoiding cars, driving cautiously, staying hydrated, keeping your phone charged, dressing right, and staying on course.
This is a community oriented event so you are highly encouraged to support other people on your team and other teams.
Be kind to others, assume best intentions, and show good sportsmanship.
You are responsible for your own safety and the safety of other participants.

What happens afterwards?

We throw an optional party and award ceremony. There may be an option to stay overnight.
If you participate in the party please bring food, drinks, etc to share and you are responsible for cleaning up after yourself and leaving the space better than you found it.

Who is responsible for safety?

You are responsible for your own safety and the safety of other participants.
You are expected to carry your own health insurance and are financially liable for any injuries that happen to you or that are caused by you during the event.
If you have a medical condition that affects your ability to run, follow directions, or perform intense cardio and/or do not have health insurance, you are not allowed to participate in the event.

September 12th, 2026

Bay to Lake 2026

Information for the 2026 race. This is gearing up to be the most scenic race yet, through the Redwoods in San Mateo County.

September 27th, 2025

Bay to Lake 2025

In our first international race, the team from China took the gold medal in a photo finish.

September 21st, 2024

Bay to Lake 2024

These animals ran all the from San Francisco to the north bay, over the richmond bridge, into Berkeley, then into the Oakland Hills. Congrats to the Leopard Print Leopards team!

September 16th, 2023

Bay to Lake 2023

In this scenic run along the coast, the Yellow Pineapples took the lead and won by a landslide.

September 18th, 2022

Bay to Lake 2022

In our inagural run from San Francisco to Spring Lake Campground in Santa Rosa, the Green Team won in a neck to neck finish with the Blue Team.

2022 - Now

Photos

Some of our favorite shots taken over the years, in no particular order. If you have some pictures you'd like to share, send them to baytolake@hazybridge.com