TCS London, on this goal. It has the easier course and the better race morning — and against ASICS LA that is the difference that actually shows up in your finish time.
Build the plan →| A fast time / Boston | TCS London | flatter course, cooler typical morning |
| A first marathon | TCS London | more forgiving on debut day |
| Easiest entry | ASICS LA | less lottery / qualifier friction |
| Crowd & support | TCS London | bigger field, more on-course energy |
| Lower trip cost | ASICS LA | cheaper all-in from South Florida |
Race-morning figures are 10-year history normals, not forecasts. Cost and travel are estimated from South Florida; your own origin may flip the trip-cost row. Full method on the methodology page.
| Score (10 = easiest) | ASICS LA Marathon | TCS London Marathon |
|---|---|---|
| Green Score (overall) | 7.7 | 7.5 |
| First-timer score | 8.4 | 8.9 |
| Terrain | 7.0 | 9.2 |
| Climate | 9.0 | 10.0 |
| Entry | 10.0 | 2.6 |
| Travel | 3.0 | 2.0 |
| Field & support | 9.5 | 10.0 |
| Distance | marathon | marathon |
| Date | March 7, 2027 | April 25, 2027 |
| Location | Los Angeles, CA | London |
| Typical race-day weather (normal) | 52°F / dew 48°F | 48°F / dew 40°F |
| Elevation gain | 955 ft | 256 ft |
| Field size | 24,000 | 50,000 |
| Entry | open | lottery |
| Entry fee | $225 | $175 |
| Boston qualifier course | Yes | Yes |
Sign in and connect Strava to see your projected finish time and qualifying odds at both races — heat- and course-adjusted to race day.