Setagaya
Setagaya Ward is "Tokyo's most populous ward." Setagaya's population is about 940,000 (2024). #1 among Tokyo's 23 wards. But 75% of Setagaya residents live with family. Husband and wife, parents and children, three generations. 45% of Setagaya residents live in detached houses they own. Setagaya is a "residential area." Quiet. Calm. For Setagaya residents, "cars" are unnecessary. Tokyo's car ownership rate is 0.32 cars per household. Japan's lowest. Why? Trains are convenient. Buses are convenient. No parking. Parking fees are expensive (over 30,000 yen per month). For Setagaya residents, "owning a car" is luxury. But Setagaya residents are wealthy. 45% own detached houses. Meaning Setagaya residents "have money." But "don't buy cars." Why? Setagaya residents choose a life where "cars aren't needed." 20 minutes by train to central Tokyo. 10 minutes to Shibuya. 15 minutes to Shinjuku. For Setagaya residents, "cars" are inefficient. Trains are faster. No need to search for parking. Setagaya residents are furthest from the "car culture" called motorsport. Why? Setagaya residents don't "own" cars. Without cars, can't do motorsport. Setagaya is Tokyo's most populous ward. But car ownership rate is among the lowest. For Setagaya residents, "population density" and "car culture" are inversely proportional. More people, fewer cars.
Setagaya sees cool winters (0–11°C) and warm humid summers (23–31°C) with peak rainfall June–September; spring (March–May, 9–23°C) offers the ideal track-day season with lower moisture and mild conditions.
10-yr monthly averages Rain days Driving season
| Track | Location | Length km | Laps | Avg Time | Avg kph | Distance km |
|---|---|---|---|---|---|---|
| Sodegaura Forest Raceway | Chiba, Japan | 2.4 | 17 | 1:16.2 | 114 | 77.6 |
| Tsukuba Circuit | Ibaraki, Japan | 2.04 | 61 | 1:02.5 | 117 | 97.9 |
| Fuji International Speedway | Shizuoka, Japan | 4.54 | 58 | 1:56.7 | 140 | 116.2 |
| Mobility Resort Motegi - Twin Ring Motegi | Motegi, Japan | 4.8 | 9 | 2:18.2 | 126 | 177.2 |
| Nikko Circuit | Utsunomiya, Japan | 1.03 | 7 | 0:43.4 | 85 | 206.5 |
| Gunma Cycle Sports Center | Minakami, Japan | 1.23 | 0 | — | — | 216.8 |
| Ebisu Circuit | Nihommatsu, Japan | 2.06 | 9 | 1:09.7 | 107 | 370.4 |