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SF MARATHON 2ND HALF 2026

Masahiro Kobayashi

Bib: 25491•M•Age: 52

Burlingame, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 3840
Top 46%
Gender (Male)
#0 / 2065
Masters (Masters Men)
#0 / 555
Top 49%
Division (M50-54)
#0 / 90
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
9–292 ft
≈
×24story building
•▲ 548 ft climb · ▼ 587 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
9:55/mi
19:51
↑ 138↓ 680.7%
4M
9:22/mi
38:34
↑ 1631.4%
6M
12:15/mi
1:03:05
↑ 55↓ 830.3%
8M
7:35/mi
1:18:15
↑ 65↓ 1510.8%
10M
10:18/mi
1:38:51
↑ 61↓ 1741.1%
12M
10:29/mi
1:59:50
↑ 41↓ 530.1%
Finish· 13.11 mi
9:51/mi
2:10:45
→ flat

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:03:05
Pace10:31 /mi
2nd Half
Distance7.11 mi
Time1:07:40
Pace9:31 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi09:08:5319:519:5519:51
9:55
-
4M
4.00 mi09:27:3638:349:3918:43
9:22
-0:33
6M
6.00 mi09:52:071:03:0510:3124:31
12:15
+2:53
8M
8.00 mi10:07:171:18:159:4715:10
7:35
-4:40
10M
10.00 mi10:27:531:38:519:5320:36
10:18
+2:43
12M
12.00 mi10:48:521:59:509:5920:59
10:29
+0:11
Finish
13.11 mi10:59:472:10:459:5810:55
9:51
-0:38

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

7:35 /mi

Average Pace

9:58 /mi

Slowest Pace

12:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

15:10

12% of race

Time at Steady Pace

1:31:04

70% of race

Time at Slower Pace

24:31

19% of race

Average Pace: 9:58 /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 mi09:08:5319:519:5519:51
9:55
#1976
4M
4.00 mi09:27:3638:349:3918:43
9:22
#1909
6M
6.00 mi09:52:071:03:0510:3124:31
12:15
#1934
8M
8.00 mi10:07:171:18:159:4715:10
7:35
#1904
10M
10.00 mi10:27:531:38:519:5320:36
10:18
#1862
12M
12.00 mi10:48:521:59:509:5920:59
10:29
#1808
Finish
13.11 mi10:59:472:10:459:5810:55
9:51
#1781
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
2M2.00 mi2.00 mi19761283491632(Top 43%)1070(Top 52%)43(Top 48%)
4M4.00 mi2.00 mi1909+671251+3247+21895(Top 49%)1236(Top 60%)50(Top 56%)
6M6.00 mi2.00 mi1934-251276-2548-12004(Top 52%)1305(Top 63%)50(Top 56%)
8M8.00 mi2.00 mi1904+301259+17481875(Top 49%)1234(Top 60%)49(Top 54%)
10M10.00 mi2.00 mi1862+421226+3349-11804(Top 47%)1184(Top 57%)46(Top 51%)
12M12.00 mi2.00 mi1808+541191+3548+11632(Top 43%)1070(Top 52%)43(Top 48%)
Finish13.11 mi1.11 mi1781+271170+2147+11487(Top 39%)978(Top 47%)39(Top 43%)

Segment Performance Analysis

10M→12M

0.0 - 2.0 mi

Top 43%
×9story building
+138ft-68ft

Overall

1632

Males

1070

M50-54

43

2M→4M

2.0 - 4.0 mi

Top 49%
×13story building
+163ft-19ft

Overall

1895

Males

1236

M50-54

50

4M→6M

4.0 - 6.0 mi

Top 52%
×4story building
+55ft-83ft

Overall

2004

Males

1305

M50-54

50

6M→8M

6.0 - 8.0 mi

Top 49%
×10story building
+65ft-151ft

Overall

1875

Males

1234

M50-54

49

8M→10M

8.0 - 10.0 mi

Top 47%
×10story building
+61ft-174ft

Overall

1804

Males

1184

M50-54

46

10M→12M

10.0 - 12.0 mi

Top 43%
×3story building
+41ft-53ft

Overall

1632

Males

1070

M50-54

43

12M→Finish

12.0 - 13.1 mi

Top 39%
×1human
+6ft-6ft

Overall

1487

Males

978

M50-54

39

Passing Analysis

Category:
Athletes Passed
370*
Passed By
175
Net Change
+195
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#1976
2M → 4M11649+67#1976#1909
4M → 6M3459-25#1909#1934
6M → 8M4919+30#1934#1904
8M → 10M64*22+42#1904#1862
10M → 12M6612+54#1862#1808
12M → Finish41*14+27#1808#1781
TOTALS370*175+195

* 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