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SF MARATHON 1ST HALF 2026

Shelby Ann Samori

Bib: 18915•F•Age: 35

San Jose, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Gender (Female)
#0 / 2930
Division (F35-39)
#0 / 388
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
12:43/mi
25:27
→ flat
4M
13:08/mi
51:42
↑ 67↓ 69
6M
12:57/mi
1:17:37
↑ 1231.1%
8M
11:51/mi
1:41:19
↑ 166↓ 531.1%
9.6M
11:51/mi
2:00:16
↑ 68↓ 1931.5%
10M
23:22/mi
2:09:36
↓ 241.1%
10.5M
7:00/mi
2:13:06
↓ 732.7%
12M
16:34/mi
2:37:57
↑ 2803.2%
Finish· 13.11 mi
11:38/mi
2:50:51
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:17:37
Pace12:56 /mi
2nd Half
Distance7.11 mi
Time1:33:14
Pace13:07 /mi
📊Positive Split: 20.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:15:1225:2712:4325:27
12:43
-
4M
4.00 mi07:41:2751:4212:5626:15
13:08
+0:25
6M
6.00 mi08:07:221:17:3712:5625:55
12:57
-0:11
8M
8.00 mi08:31:041:41:1912:4023:42
11:51
-1:06
9.6M
9.60 mi08:50:012:00:1612:3218:57
11:51
0:00
10M
10.00 mi08:59:212:09:3612:589:20
23:22
+11:31
10.5M
10.50 mi09:02:512:13:0612:413:30
7:00
-16:22
12M
12.00 mi09:27:422:37:5713:1024:51
16:34
+9:34
Finish
13.11 mi09:40:362:50:5113:0212:54
11:38
-4:56

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

7:00 /mi

Average Pace

13:02 /mi

Slowest Pace

23:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30

2% of race

Time at Steady Pace

2:13:10

78% of race

Time at Slower Pace

34:11

20% of race

Average Pace: 13:02 /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 mi07:15:1225:2712:4325:27
12:43
#6316
4M
4.00 mi07:41:2751:4212:5626:15
13:08
#6256
6M
6.00 mi08:07:221:17:3712:5625:55
12:57
#6158
8M
8.00 mi08:31:041:41:1912:4023:42
11:51
#5823
9.6M
9.60 mi08:50:012:00:1612:3218:57
11:51
#5882
10M
10.00 mi08:59:212:09:3612:589:20
23:22
#5829
10.5M
10.50 mi09:02:512:13:0612:413:30
7:00
#5860
12M
12.00 mi09:27:422:37:5713:1024:51
16:34
#5696
Finish
13.11 mi09:40:362:50:5113:0212:54
11:38
#5607
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 83%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

12:50

Segment Time

14:16/mi

Pace

0.90 mi

Distance

Overall

5433

Women

2279

Division

286

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
2M2.00 mi2.00 mi631627433594583(Top 70%)1813(Top 62%)227(Top 59%)
4M4.00 mi2.00 mi6256+602707+36352+76165(Top 94%)2657(Top 91%)340(Top 88%)
6M6.00 mi2.00 mi6158+982634+73342+105817(Top 88%)2429(Top 83%)310(Top 80%)
8M8.00 mi2.00 mi5823+3352420+214307+354421(Top 67%)1603(Top 55%)210(Top 54%)
9.6M9.60 mi1.60 mi5882-592472-52313-65722(Top 87%)2443(Top 83%)314(Top 81%)
10M10.00 mi0.40 mi5829+532441+31312+15113(Top 78%)2088(Top 71%)259(Top 67%)
10.5M10.50 mi0.50 mi5860-312457-16314-26160(Top 94%)2695(Top 92%)350(Top 90%)
12M12.00 mi1.50 mi5696+1642364+93300+144583(Top 70%)1813(Top 62%)227(Top 59%)
Finish13.11 mi1.11 mi5607+892324+40298+24630(Top 70%)1856(Top 63%)238(Top 61%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 70%
~flat
+5ft-3ft

Overall

4583

Females

1813

F35-39

227

2M→4M

2.0 - 4.0 mi

Top 94%
×4story building
+67ft-69ft

Overall

6165

Females

2657

F35-39

341

4M→6M

4.0 - 6.0 mi

Top 88%
×9story building
+123ft-9ft

Overall

5817

Females

2429

F35-39

310

6M→8M

6.0 - 8.0 mi

Top 67%
×12story building
+166ft-53ft

Overall

4421

Females

1603

F35-39

210

8M→9.6M

8.0 - 9.6 mi

Top 87%
×13story building
+68ft-193ft

Overall

5722

Females

2443

F35-39

314

9.6M→10M

9.6 - 10.0 mi

Top 78%
×2story building
+0ft-24ft

Overall

5113

Females

2088

F35-39

259

10M→10.5M

10.0 - 10.5 mi

Top 94%
×6story building
+1ft-73ft

Overall

6160

Females

2695

F35-39

350

10.5M→12M

10.5 - 12.0 mi

Top 70%
×21story building
+280ft-26ft

Overall

4583

Females

1813

F35-39

227

12M→Finish

12.0 - 13.1 mi

Top 70%
×7story building
+14ft-89ft

Overall

4630

Females

1856

F35-39

238

Passing Analysis

Category:
Athletes Passed
994*
Passed By
285
Net Change
+709
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#6316
2M → 4M104*44+60#6316#6256
4M → 6M114*16+98#6256#6158
6M → 8M336*1+335#6158#5823
8M → 9.6M70129-59#5823#5882
9.6M → 10M8027+53#5882#5829
10M → 10.5M940-31#5829#5860
10.5M → 12M181*17+164#5860#5696
12M → Finish100*11+89#5696#5607
TOTALS994*285+709

* 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