Flat grade share
- Catalina Island Marathon
- 19.7% Favoured
Catalina Island Marathon 10K vs Catalina Island Marathon
A data-led head-to-head using sourced race facts and available derived figures under one published methodology.
Data current as ofCatalina Island Marathon 10K or Catalina Island Marathon — which comes out ahead?
Catalina Island Marathon has the stronger available profile on flat grade share and course flatness.
Route comparison snapshot
Catalina Island Marathon 10K
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 13.2%
- flat grade share
- 16.5%
- lower ascent
- 398 m
- climbing density
- 39.8 m/km
- net elevation
- 0 m
- maximum grade
- 39.0%
Catalina Island Marathon
- Mapped route
- Held
- Elevation profile
- Held
- course flatness
- 11.8% Favoured
- flat grade share
- 19.7% Favoured
- lower ascent
- 1,530 m
- climbing density
- 36.3 m/km
- net elevation
- 4 m
- maximum grade
- 44.6%
| Metric | Catalina Island Marathon 10K | Catalina Island Marathon |
|---|---|---|
| Flat grade share | 16.5% | 19.7% ✓ |
| GAP factor (% slower than flat) | 13.2% | 11.8% ✓ |
| Uphill share | 40.1% | 41.5% |
| Steep-up share | 25.3% | 25.8% |
| Downhill share | 43.4% | 38.8% |
| Total ascent (m) | 398 m | 1,530 m |
| Climbing density (m/km) | 39.8 m/km | 36.3 m/km |
| Longest climb length (m) | 2,270 m | 810 m |
| Longest climb gain (m) | 134 m | 83 m |
| Longest climb average grade | 5.9% | 10.2% |
| Total descent (m) | 398 m | 1,526 m |
| Net elevation (m) | 0 m | 4 m |
| Max absolute grade | 39.0% | 44.6% |
| Start elevation (m) | 9 m | 6 m |
| Finish elevation (m) | 9 m | 10 m |
| Scenic score | 100/100 | 100/100 |
| Conditions | 75/100 | 75/100 |
GAP factor (% slower than flat)
- Catalina Island Marathon
- 11.8% Favoured
Uphill share
Steep-up share
Downhill share
Total ascent (m)
- Catalina Island Marathon
- 1,530 m
Climbing density (m/km)
- Catalina Island Marathon 10K
- 39.8 m/km
- Catalina Island Marathon
- 36.3 m/km
Longest climb length (m)
- Catalina Island Marathon 10K
- 2,270 m
Longest climb gain (m)
Longest climb average grade
Total descent (m)
- Catalina Island Marathon
- 1,526 m
Net elevation (m)
Max absolute grade
Start elevation (m)
Finish elevation (m)
Scenic score
- Catalina Island Marathon 10K
- 100/100
- Catalina Island Marathon
- 100/100
Conditions
- Catalina Island Marathon
- 75/100
Only metrics available for at least one side are shown. A ✓ marks the better value for each metric (higher-is-better aware). Scores are out of 100 when available. Ascent, climbing density, max absolute grade and median finish describe course or field context and are not marked as better or worse.
Same-distance comparisons are most meaningful; cross-distance metrics are contextual.
Race facts that change the decision
| Fact | Catalina Island Marathon 10K | Catalina Island Marathon |
|---|---|---|
| Schedule | Exact race date not confirmed. Event weekend starts 2027-03-13 (legacy event-level date). | Exact race date not confirmed. Event weekend starts 2027-03-13 (legacy event-level date). |
| Location | Avalon, California | Avalon, California |
| Actual distance | 10 km | 42.2 km |
| raceindex.org mapped route held | Held | Held |
| raceindex.org elevation profile held | Held | Held |
| Course type | Loop | Point To Point |
| Surface | Unavailable | Trail |
| Elevation character | Unavailable | Hilly |
| Terrain | Road | Trail, Road, Gravel |
| Scenery | City, Coastal, Waterfront, Island, Mountain, Countryside | Coastal, Island, Waterfront, Mountain, Countryside |
| Atmosphere | Wilderness, Destination, Scenic Tour | Wilderness, Destination, Scenic Tour |
| Technicality | Unavailable | Moderate |
| Total ascent | 398 m | 1,530 m |
| Climbing density | 39.8 m/km | 36.3 m/km |
| Total descent | 398 m | 1,526 m |
| Net elevation | 0 m | 4 m |
| Max absolute grade | 39.0% | 44.6% |
| Flat grade share | 16.5% | 19.7% |
| GAP factor | 13.2% | 11.8% |
| Cutoff | 3:15:00 | 8:00:00 |
| Entry model | Open | Open |
Schedule
- Catalina Island Marathon 10K
Exact race date not confirmed. Event weekend starts 2027-03-13 (legacy event-level date).
- Catalina Island Marathon
Exact race date not confirmed. Event weekend starts 2027-03-13 (legacy event-level date).
Location
- Catalina Island Marathon 10K
- Avalon, California
- Catalina Island Marathon
- Avalon, California
Actual distance
- Catalina Island Marathon 10K
- 10 km
- Catalina Island Marathon
- 42.2 km
raceindex.org mapped route held
- Catalina Island Marathon 10K
- Held
- Catalina Island Marathon
- Held
raceindex.org elevation profile held
- Catalina Island Marathon 10K
- Held
- Catalina Island Marathon
- Held
Course type
- Catalina Island Marathon 10K
- Loop
- Catalina Island Marathon
- Point To Point
Surface
- Catalina Island Marathon 10K
- Unavailable
- Catalina Island Marathon
- Trail
Elevation character
- Catalina Island Marathon 10K
- Unavailable
- Catalina Island Marathon
- Hilly
Terrain
- Catalina Island Marathon 10K
- Road
- Catalina Island Marathon
- Trail, Road, Gravel
Scenery
- Catalina Island Marathon 10K
- City, Coastal, Waterfront, Island, Mountain, Countryside
- Catalina Island Marathon
- Coastal, Island, Waterfront, Mountain, Countryside
Atmosphere
- Catalina Island Marathon 10K
- Wilderness, Destination, Scenic Tour
- Catalina Island Marathon
- Wilderness, Destination, Scenic Tour
Technicality
- Catalina Island Marathon 10K
- Unavailable
- Catalina Island Marathon
- Moderate
Total ascent
- Catalina Island Marathon 10K
- 398 m
- Catalina Island Marathon
- 1,530 m
Climbing density
- Catalina Island Marathon 10K
- 39.8 m/km
- Catalina Island Marathon
- 36.3 m/km
Total descent
- Catalina Island Marathon 10K
- 398 m
- Catalina Island Marathon
- 1,526 m
Net elevation
- Catalina Island Marathon 10K
- 0 m
- Catalina Island Marathon
- 4 m
Max absolute grade
- Catalina Island Marathon 10K
- 39.0%
- Catalina Island Marathon
- 44.6%
Flat grade share
- Catalina Island Marathon 10K
- 16.5%
- Catalina Island Marathon
- 19.7%
GAP factor
- Catalina Island Marathon 10K
- 13.2%
- Catalina Island Marathon
- 11.8%
Cutoff
- Catalina Island Marathon 10K
- 3:15:00
- Catalina Island Marathon
- 8:00:00
Entry model
- Catalina Island Marathon 10K
- Open
- Catalina Island Marathon
- Open
Facts are shown only when they exist in the sourced race record; Not held means no sourced value is held for that race.
Common questions
Which is flatter, Catalina Island Marathon 10K or Catalina Island Marathon?
Catalina Island Marathon has the lower GAP factor, making it the flatter course on our route model and more favourable on gradient alone.