Yes. Kakamega is about 50 km (31 miles) north of Kisumu, and Kericho is roughly 90 km (56 miles) to the east, both reasonable additions if you want to break up the journey. Since Daytrip lets you build your own route with private stops, you can pair Kisumu with a rainforest walk near Kakamega or tea country views near Kericho on the same trip.
Kisumu sits about 340 km (211 miles) west of Nairobi, descending through the Rift Valley escarpment to the shores of Lake Victoria. A private transfer typically takes around 5 to 6 hours depending on traffic and road conditions, far more comfortable than a shared matatu or bus after a full day of sightseeing. With Daytrip you set the schedule and can build in stops along the way rather than sticking to a fixed route.
A full day usually covers a morning boat trip on the lake, a visit to Kisumu Museum for an overview of western Kenya's culture and history, and a stop at the Impala Sanctuary just south of town, home to impala, hippos, and cheetahs. Travelers with extra time sometimes add Kit Mikayi, a rock outcrop about 25 km (16 miles) south of the city with deep roots in Luo folklore. Round things off with a browse through Kibuye or Oile market, or local art at Kisumu Art House.
Fish is central to Kisumu's food scene given its lakeside setting, with tilapia and Nile perch showing up grilled, fried, or in stew at local restaurants. Many dishes draw on wider Kenyan and international cooking but carry a distinct lakeside twist. Pairing a meal with a lake view makes for one of the more memorable stops on a day trip.
Kisumu pairs the amenities of one of Kenya's larger cities with a relaxed, old-town atmosphere that feels closer to a lakeside town than a city. It's the country's main gateway to Lake Victoria, so a single visit takes in lake scenery, fishing culture, and Luo heritage. The pace is slower than Nairobi or Mombasa, making it easy to explore the market, museum, and waterfront on foot.
A boat trip on Lake Victoria is the highlight for most visitors, ranging from short cruises along the Winam Gulf to trips out to Ndere Island, where impala, hippos, and monkeys roam undisturbed. Mornings are the better window, since the lake tends to get windier in the afternoon. Birdwatchers often spot fish eagles and kingfishers along the shoreline.