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SF MARATHON 2ND HALF 2026

Jack Nelson

Bib: 22757•M•Age: 34

Mill Valley, CA

0:00
0:00
/ mi
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Overall
#0 / 3840
Top 17%
Gender (Male)
#0 / 2065
Top 25%
Division (M30-34)
#0 / 453
Top 26%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
2M
17:27
Rank: #963
Start → 2M
17:27 | 8:43/mi
4M
33:23
Rank: #869 (+94)
2M → 4M
15:56 | 7:58/mi
6M
54:05
Rank: #826 (+43)
4M → 6M
20:42 | 10:21/mi
8M
1:06:48
Rank: #784 (+42)
6M → 8M
12:43 | 6:21/mi
10M
1:23:54
Rank: #757 (+27)
8M → 10M
17:06 | 8:33/mi
12M
1:41:07
Rank: #698 (+59)
10M → 12M
17:13 | 8:36/mi
Finish· 13.11 mi
1:50:08
Rank: #665 (+33)
12M → Finish
9:01 | 8:08/mi

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time54:05
Pace9:01 /mi
2nd Half
Distance7.11 mi
Time56:03
Pace7:53 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi08:53:4617:278:4317:27
8:43
-
4M
4.00 mi09:09:4233:238:2115:56
7:58
-0:45
6M
6.00 mi09:30:2454:059:0120:42
10:21
+2:23
8M
8.00 mi09:43:071:06:488:2112:43
6:21
-4:00
10M
10.00 mi10:00:131:23:548:2317:06
8:33
+2:12
12M
12.00 mi10:17:261:41:078:2617:13
8:36
+0:03
Finish
13.11 mi10:26:271:50:088:249:01
8:08
-0:28

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

6:21 /mi

Average Pace

8:24 /mi

Slowest Pace

10:21 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

28:39

26% of race

Time at Steady Pace

1:00:47

55% of race

Time at Slower Pace

20:42

19% of race

Average Pace: 8:24 /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 mi08:53:4617:278:4317:27
8:43
#963
4M
4.00 mi09:09:4233:238:2115:56
7:58
#869
6M
6.00 mi09:30:2454:059:0120:42
10:21
#826
8M
8.00 mi09:43:071:06:488:2112:43
6:21
#784
10M
10.00 mi10:00:131:23:548:2317:06
8:33
#757
12M
12.00 mi10:17:261:41:078:2617:13
8:36
#698
Finish
13.11 mi10:26:271:50:088:249:01
8:08
#665
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi963706165545(Top 14%)419(Top 20%)97(Top 21%)
4M4.00 mi2.00 mi869+94642+64146+19794(Top 21%)593(Top 29%)136(Top 30%)
6M6.00 mi2.00 mi826+43613+29141+5776(Top 20%)588(Top 28%)136(Top 30%)
8M8.00 mi2.00 mi784+42594+19136+5698(Top 18%)537(Top 26%)127(Top 28%)
10M10.00 mi2.00 mi757+27575+19133+3673(Top 18%)518(Top 25%)121(Top 27%)
12M12.00 mi2.00 mi698+59536+39128+5545(Top 14%)419(Top 20%)97(Top 21%)
Finish13.11 mi1.11 mi665+33509+27119+9490(Top 13%)375(Top 18%)88(Top 19%)

Segment Performance Analysis

10M→12M

0.0 - 2.0 mi

Top 14%
×9stories
+138ft-68ft

Overall

545

Males

419

M30-34

97

2M→4M

2.0 - 4.0 mi

Top 21%
×13stories
+163ft-19ft

Overall

794

Males

593

M30-34

136

4M→6M

4.0 - 6.0 mi

Top 20%
×4stories
+55ft-83ft

Overall

776

Males

588

M30-34

136

6M→8M

6.0 - 8.0 mi

Top 18%
×10stories
+65ft-151ft

Overall

698

Males

537

M30-34

127

8M→10M

8.0 - 10.0 mi

Top 18%
×10stories
+61ft-174ft

Overall

673

Males

518

M30-34

121

10M→12M

10.0 - 12.0 mi

Top 14%
×3stories
+41ft-53ft

Overall

545

Males

419

M30-34

97

12M→Finish

12.0 - 13.1 mi

Top 13%
×1human
+6ft-6ft

Overall

490

Males

375

M30-34

88

Passing Analysis

Category:
Athletes Passed
352*
Passed By
54
Net Change
+298
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#963
2M → 4M11117+94#963#869
4M → 6M5411+43#869#826
6M → 8M486+42#826#784
8M → 10M37*10+27#784#757
10M → 12M656+59#757#698
12M → Finish374+33#698#665
TOTALS352*54+298

* 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