| benefit treadmill versus outdoor | 1.51 | 0.6 | 2526 | 32 | 18 |
| benefits of running outside vs treadmill | 1.64 | 0.9 | 3017 | 40 | 42 |
| outdoor running vs treadmill | 1.95 | 0.1 | 5999 | 28 | 32 |
| benefits of treadmill vs walking outside | 1 | 1 | 9273 | 40 | 54 |
| is treadmill or outdoor walking better | 0.72 | 0.7 | 1712 | 38 | 51 |
| running outdoors vs treadmill | 1.8 | 0.5 | 6346 | 29 | 91 |
| outdoor running vs treadmill running | 0.76 | 0.4 | 9969 | 36 | 82 |
| is walking outdoors better than a treadmill | 0.59 | 0.8 | 327 | 43 | 16 |
| is a treadmill better than running outside | 1.66 | 0.6 | 8399 | 42 | 48 |
| treadmill running compared to outdoor running | 1.98 | 0.3 | 852 | 45 | 77 |
| treadmill versus walking outside | 0.67 | 0.9 | 4373 | 32 | 27 |
| what is better treadmill or walking outside | 1.57 | 0.4 | 6998 | 43 | 70 |
| treadmill makes running easier than outside | 0.5 | 0.7 | 2151 | 43 | 96 |
| treadmill vs walking outdoors | 1.06 | 0.8 | 4697 | 29 | 87 |
| running treadmill vs outside | 1.87 | 0.4 | 6122 | 28 | 24 |
| which is better walking outside or treadmill | 0.82 | 0.4 | 2498 | 44 | 29 |
| is treadmill easier than running outside | 1.93 | 0.2 | 2846 | 40 | 11 |
