She pedaled hard down the dirt trail, her thighs burning and her pussy throbbing against the narrow bike seat. Every bump sent a jolt straight through her cunt, making her shorts ride up and the seam press right on her clit. Lisa had been riding alone for miles when she spotted another girl up ahead, stopped by a fallen log with her bike on its side.
The girl was young, maybe twenty-two, with tight shorts and a tank top soaked in sweat. Her name was Mia, she said, and her chain had slipped. Lisa dropped her own bike and crouched to help, but her eyes kept drifting to Mia's ass as she bent over the frame. "Fuck, you look like you need more than a chain fix," Lisa muttered, grabbing Mia's hips from behind without asking.
Mia didn't pull away. Instead she pushed back, grinding her ass against Lisa's hand. "Been riding all morning thinking about getting fucked on this damn bike," she said, voice low and direct. Lisa yanked Mia's shorts down to her knees, exposing a shaved, glistening pussy. Two fingers slid right in, no resistance, just hot wet heat. Mia moaned and spread her legs wider, gripping her handlebars for balance.
Lisa finger-fucked her hard and fast, knuckles slapping against Mia's ass with every thrust. Juices ran down Mia's thighs and onto the dirt. "Ride my hand like it's a cock," Lisa ordered. Mia rocked back, impaling herself deeper while her bike wobbled under her grip. When Mia's legs started shaking, Lisa pulled her fingers out, licked them clean, and stood up.
She pulled her own shorts off, revealing a thick strap-on she'd packed for the trail. The dildo was black, veined, and already lubed from the heat. Lisa lined it up and slammed into Mia's cunt in one stroke. Mia cried out, knuckles white on the handlebars as the bike rocked forward with every thrust. Lisa fucked her rough, hips snapping, the base of the strap-on grinding against her own clit. The wet sounds of skin slapping and pussy squelching filled the quiet woods.
Mia reached back and spread her ass cheeks, begging for it deeper. "Fuck my hole harder, make me come all over this bike." Lisa obliged, pounding until Mia's whole body seized and she squirted down her own legs, soaking the bike seat and the ground. Lisa didn't stop. She kept driving in, chasing her own orgasm, until she stiffened and came with a grunt, grinding the base against her swollen clit.
They switched positions. Mia dropped to her knees in the dirt and sucked the strap-on clean, tasting her own cum, then pulled Lisa down onto the bike seat. Lisa straddled the frame backward, ass hanging off the edge. Mia shoved three fingers into Lisa's dripping cunt while licking her asshole in broad, filthy strokes. Lisa's moans echoed as Mia tongue-fucked her ass and finger-banged her pussy at the same time, making her come so hard her bike tipped over and they both tumbled into the leaves, laughing and still fingering each other.
They ended up on the ground, legs tangled, taking turns riding each other's faces until both had come again. Sweat, dirt, and pussy juice covered them. When they finally stood, shaky and satisfied, Mia grinned. "Same trail tomorrow?" Lisa nodded, already imagining the next ride with the handlebars digging into her stomach while she got railed from behind again. The bikes waited, seats slick, ready for more.
