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SF MARATHON 1ST HALF 2026

Marilyn Jackson

Bib: 16645•F•Age: 58

San Francisco, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 6575
Gender (Female)
#0 / 2930
Masters (Masters Women)
#0 / 781
Division (F55-59)
#0 / 100
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
2M
21:10
Rank: #4063
Start → 2M
21:10 | 10:35/mi
4M
44:33
Rank: #4616 (-553)
2M → 4M
23:23 | 11:42/mi
6M
1:09:49
Rank: #5095 (-479)
4M → 6M
25:16 | 12:38/mi
8M
1:34:13
Rank: #4979 (+116)
6M → 8M
24:24 | 12:12/mi
9.6M
1:53:44
Rank: #5257 (-278)
8M → 9.6M
19:31 | 12:12/mi
10M
2:02:55
Rank: #5230 (+27)
9.6M → 10M
9:11 | 22:59/mi
10.5M
2:05:53
Rank: #5228 (+2)
10M → 10.5M
2:58 | 5:56/mi
12M
2:33:01
Rank: #5306 (-78)
10.5M → 12M
27:08 | 18:05/mi
Finish· 13.11 mi
2:46:43
Rank: #5267 (+39)
12M → Finish
13:42 | 12:21/mi

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:09:49
Pace11:38 /mi
2nd Half
Distance7.11 mi
Time1:36:54
Pace13:38 /mi
📊Positive Split: 38.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:07:0221:1010:3521:10
10:35
-
4M
4.00 mi07:30:2544:3311:0823:23
11:42
+1:07
6M
6.00 mi07:55:411:09:4911:3825:16
12:38
+0:56
8M
8.00 mi08:20:051:34:1311:4724:24
12:12
-0:26
9.6M
9.60 mi08:39:361:53:4411:5119:31
12:12
0:00
10M
10.00 mi08:48:472:02:5512:189:11
22:59
+10:47
10.5M
10.50 mi08:51:452:05:5311:592:58
5:56
-17:03
12M
12.00 mi09:18:532:33:0112:4527:08
18:05
+12:09
Finish
13.11 mi09:32:352:46:4312:4313:42
12:21
-5:44

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

5:56 /mi

Average Pace

12:43 /mi

Slowest Pace

22:59 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:58

2% of race

Time at Steady Pace

2:07:26

76% of race

Time at Slower Pace

36:19

22% of race

Average Pace: 12:43 /mi

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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 mi07:07:0221:1010:3521:10
10:35
#4063
4M
4.00 mi07:30:2544:3311:0823:23
11:42
#4616
6M
6.00 mi07:55:411:09:4911:3825:16
12:38
#5095
8M
8.00 mi08:20:051:34:1311:4724:24
12:12
#4979
9.6M
9.60 mi08:39:361:53:4411:5119:31
12:12
#5257
10M
10.00 mi08:48:472:02:5512:189:11
22:59
#5230
10.5M
10.50 mi08:51:452:05:5311:592:58
5:56
#5228
12M
12.00 mi09:18:532:33:0112:4527:08
18:05
#5306
Finish
13.11 mi09:32:352:46:4312:4313:42
12:21
#5267
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 75%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

12:09

Segment Time

13:30/mi

Pace

0.90 mi

Distance

Overall

4958

Women

1998

Division

62

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
2M2.00 mi2.00 mi40631432325476(Top 83%)2320(Top 79%)73(Top 73%)
4M4.00 mi2.00 mi4616-5531721-28949-175125(Top 78%)2024(Top 69%)62(Top 62%)
6M6.00 mi2.00 mi5095-4791992-27161-125622(Top 86%)2312(Top 79%)71(Top 71%)
8M8.00 mi2.00 mi4979+1161914+7858+34762(Top 72%)1778(Top 61%)56(Top 56%)
9.6M9.60 mi1.60 mi5257-2782084-17066-85941(Top 90%)2560(Top 87%)80(Top 80%)
10M10.00 mi0.40 mi5230+272070+1464+24970(Top 76%)2012(Top 69%)64(Top 64%)
10.5M10.50 mi0.50 mi5228+22069+1645254(Top 80%)2155(Top 74%)70(Top 70%)
12M12.00 mi1.50 mi5306-782136-6769-55476(Top 83%)2320(Top 79%)73(Top 73%)
Finish13.11 mi1.11 mi5267+392124+1267+25166(Top 79%)2171(Top 74%)68(Top 68%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 83%
~flat
+5ft-3ft

Overall

5476

Females

2320

F55-59

73

2M→4M

2.0 - 4.0 mi

Top 78%
×4stories
+67ft-69ft

Overall

5125

Females

2024

F55-59

62

4M→6M

4.0 - 6.0 mi

Top 86%
×9stories
+123ft-9ft

Overall

5622

Females

2312

F55-59

71

6M→8M

6.0 - 8.0 mi

Top 72%
×12stories
+166ft-53ft

Overall

4762

Females

1778

F55-59

56

8M→9.6M

8.0 - 9.6 mi

Top 90%
×13stories
+68ft-193ft

Overall

5941

Females

2560

F55-59

80

9.6M→10M

9.6 - 10.0 mi

Top 76%
×2stories
+0ft-24ft

Overall

4970

Females

2012

F55-59

64

10M→10.5M

10.0 - 10.5 mi

Top 80%
×6stories
+1ft-73ft

Overall

5254

Females

2155

F55-59

70

10.5M→12M

10.5 - 12.0 mi

Top 83%
×21stories
+280ft-26ft

Overall

5476

Females

2320

F55-59

73

12M→Finish

12.0 - 13.1 mi

Top 79%
×7stories
+14ft-89ft

Overall

5166

Females

2171

F55-59

68

Passing Analysis

Category:
Athletes Passed
507*
Passed By
1711
Net Change
-1204
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#4063
2M → 4M51604-553#4063#4616
4M → 6M40*519-479#4616#5095
6M → 8M201*85+116#5095#4979
8M → 9.6M15293-278#4979#5257
9.6M → 10M5528+27#5257#5230
10M → 10.5M1715+2#5230#5228
10.5M → 12M62*140-78#5228#5306
12M → Finish66*27+39#5306#5267
TOTALS507*1711-1204

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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

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