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SF MARATHON 1ST HALF 2026

Isabella Choi

Bib: 19967•F•Age: 20

Foster City, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Gender (Female)
#0 / 2930
F20-29
#0 / 353
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
10:17/mi
20:34
→ flat
4M
11:20/mi
43:13
↑ 67↓ 69
6M
11:10/mi
1:05:33
↑ 1231.1%
8M
11:20/mi
1:28:12
↑ 166↓ 531.1%
9.6M
11:20/mi
1:46:20
↑ 68↓ 1931.5%
10M
24:07/mi
1:55:58
↓ 241.1%
10.5M
5:36/mi
1:58:46
↓ 732.7%
12M
17:02/mi
2:24:19
↑ 2803.2%
Finish· 13.11 mi
11:59/mi
2:37:36
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:05:33
Pace10:56 /mi
2nd Half
Distance7.11 mi
Time1:32:03
Pace12:57 /mi
📊Positive Split: 40.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:10:3120:3410:1720:34
10:17
-
4M
4.00 mi07:33:1043:1310:4822:39
11:20
+1:03
6M
6.00 mi07:55:301:05:3310:5622:20
11:10
-0:10
8M
8.00 mi08:18:091:28:1211:0222:39
11:20
+0:10
9.6M
9.60 mi08:36:171:46:2011:0518:08
11:20
0:00
10M
10.00 mi08:45:551:55:5811:369:38
24:07
+12:47
10.5M
10.50 mi08:48:431:58:4611:192:48
5:36
-18:31
12M
12.00 mi09:14:162:24:1912:0225:33
17:02
+11:26
Finish
13.11 mi09:27:332:37:3612:0113:17
11:59
-5:03

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

5:36 /mi

Average Pace

12:01 /mi

Slowest Pace

24:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48

2% of race

Time at Steady Pace

1:59:37

76% of race

Time at Slower Pace

35:11

22% of race

Average Pace: 12:01 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
2M
2.00 mi07:10:3120:3410:1720:34
10:17
#3526
4M
4.00 mi07:33:1043:1310:4822:39
11:20
#4133
6M
6.00 mi07:55:301:05:3310:5622:20
11:10
#4097
8M
8.00 mi08:18:091:28:1211:0222:39
11:20
#3984
9.6M
9.60 mi08:36:171:46:2011:0518:08
11:20
#4246
10M
10.00 mi08:45:551:55:5811:369:38
24:07
#4390
10.5M
10.50 mi08:48:431:58:4611:192:48
5:36
#4400
12M
12.00 mi09:14:162:24:1912:0225:33
17:02
#4523
Finish
13.11 mi09:27:332:37:3612:0113:17
11:59
#4534
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 79%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

12:26

Segment Time

13:49/mi

Pace

0.90 mi

Distance

Overall

5173

Women

2117

Division

273

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
2M2.00 mi2.00 mi352611921644869(Top 74%)1979(Top 68%)259(Top 73%)
4M4.00 mi2.00 mi4133-6071472-280194-304647(Top 71%)1760(Top 60%)230(Top 65%)
6M6.00 mi2.00 mi4097+361450+22197-34092(Top 62%)1463(Top 50%)196(Top 56%)
8M8.00 mi2.00 mi3984+1131378+72182+153896(Top 59%)1351(Top 46%)172(Top 49%)
9.6M9.60 mi1.60 mi4246-2621537-159203-215323(Top 81%)2237(Top 76%)276(Top 78%)
10M10.00 mi0.40 mi4390-1441628-91213-105383(Top 82%)2255(Top 77%)294(Top 83%)
10.5M10.50 mi0.50 mi4400-101629-1214-14647(Top 71%)1802(Top 62%)237(Top 67%)
12M12.00 mi1.50 mi4523-1231706-77226-124869(Top 74%)1979(Top 68%)259(Top 73%)
Finish13.11 mi1.11 mi4534-111715-9229-34909(Top 75%)2026(Top 69%)267(Top 76%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 74%
~flat
+5ft-3ft

Overall

4869

Females

1979

F20-24

259

2M→4M

2.0 - 4.0 mi

Top 71%
×4story building
+67ft-69ft

Overall

4647

Females

1760

F20-24

231

4M→6M

4.0 - 6.0 mi

Top 62%
×9story building
+123ft-9ft

Overall

4092

Females

1463

F20-24

197

6M→8M

6.0 - 8.0 mi

Top 59%
×12story building
+166ft-53ft

Overall

3896

Females

1351

F20-24

172

8M→9.6M

8.0 - 9.6 mi

Top 81%
×13story building
+68ft-193ft

Overall

5323

Females

2237

F20-24

276

9.6M→10M

9.6 - 10.0 mi

Top 82%
×2story building
+0ft-24ft

Overall

5383

Females

2255

F20-24

294

10M→10.5M

10.0 - 10.5 mi

Top 71%
×6story building
+1ft-73ft

Overall

4647

Females

1802

F20-24

237

10.5M→12M

10.5 - 12.0 mi

Top 74%
×21story building
+280ft-26ft

Overall

4869

Females

1979

F20-24

259

12M→Finish

12.0 - 13.1 mi

Top 75%
×7story building
+14ft-89ft

Overall

4909

Females

2026

F20-24

267

Passing Analysis

Category:
Athletes Passed
552*
Passed By
1560
Net Change
-1008
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#3526
2M → 4M43650-607#3526#4133
4M → 6M140*104+36#4133#4097
6M → 8M217*104+113#4097#3984
8M → 9.6M19281-262#3984#4246
9.6M → 10M15159-144#4246#4390
10M → 10.5M717-10#4390#4400
10.5M → 12M60*183-123#4400#4523
12M → Finish51*62-11#4523#4534
TOTALS552*1560-1008

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events