YellowJacket Racing

Next Stop on the Fleet Feet Grand Prix Series presented by HOKA - Harborfest 10K on Saturday, June 20th at Ontario Beach Park.

There is also the Harborfest 5K, but not part of series. Do both races for a special rate.

Harborfest 5K & 10K The Harborfest 5K & 10K is on Saturday June 20, 2026. It includes the following events: Harborfest 10K, Harborfest 5K, and Harborfest 5K & 10K Combo.

We are in DIRE need of 8 more Volunteers for Saturday, June 20th at Harborfest 5K/10K at Ontario Beach Park.

The roles are needed from 7:15AM until about 10:30AM depending on your role.

We are seeking finish line/road marshals and water stop help. Post Race enjoy the Harborfest Festival.

Harborfest 5K & 10K The Harborfest 5K & 10K is on Saturday June 20, 2026. It includes the following events: Harborfest 5K, Harborfest 10K, and Harborfest 5K & 10K Combo.

LAST CALL: Mendon Mauler 4 or 8 trail miles, one of the oldest trail races in the area is Friday, June 12th at 6pm at Mendon Ponds Park. Post race Zweigles cook out, beautiful trails! Registration ends at noon on July 12th.

Mendon Mauler Trail Races - 4 or 8 Miler The Mendon Mauler Trail Races - 4 or 8 Miler is on Friday June 12, 2026. It includes the following events: 4 Mile and 8 Mile.

On this beautiful Global Running Day where will you be racing with us next?

Tonight - RUN585, The Big Run (Sold out)
Saturday 6/6 - Fast & Furriest 10k & 5k
Sunday 6/7 - Super Hear-O 5k
Friday 6/12 - The Mendon Mauler Trail Race
Saturday 6/20 - Harborfest 10k & 5k

Sign up for one or all today.

Half Marathon | 5K | Trail Races | Kids Race | 10K Here are the Fleet Feet Grand Prix Presented by HOKA Qualifying Events - Cash Prizes/HOKA Footwear & Gear as awards PLUS the Kid Run Wild (Kid & Family Friendly) Events.  See TENTATIVE 2026 Calendar below images to learn more about each event and sign up.