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SF MARATHON 1ST HALF 2023

Jay Shafto

Bib: 11994•M•Age: 49

Mountain View, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 6072
Gender (Male)
#0 / 3331
Masters (Masters Men)
#0 / 1028
Division (M45-49)
#0 / 241
Race Day Weather
60°/50°F
overcast 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
1.40M
10:50/mi
15:10
→ flat
2.13M
22:17/mi
31:26
→ flat
6.43M
14:06/mi
1:32:05
↑ 274↓ 780.9%
6.62M
-42:-22/mi
1:24:13
↑ 161.6%
10.65M
10:56/mi
2:08:17
↑ 153↓ 3611.0%
Finish· 13.11 mi
10:41/mi
2:34:34
↑ 244↓ 1141.0%

The Course

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Half Splits

1st Half· via 6.62M
Distance6.62 mi
Time1:24:13
Pace12:43 /mi
2nd Half✓ Faster
Distance6.49 mi
Time1:10:21
Pace10:50 /mi
📊Negative Split: 16.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.40M
1.40 mi06:54:5515:1010:5015:10
10:50
-
2.13M
2.13 mi07:11:1131:2614:4516:16
22:17
+11:27
6.43M
6.43 mi08:11:501:32:0514:191:00:39
14:06
-8:11
6.62M
6.62 mi08:03:581:24:1312:43
-42:-22
-56:28
10.65M
10.65 mi08:48:022:08:1712:0344:04
10:56
+53:18
Finish
13.11 mi09:14:192:34:3411:4726:17
10:41
-0:15

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

-43:-22 /mi

Average Pace

11:47 /mi

Slowest Pace

22:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:34

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 11:47 /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
1.40M
1.40 mi06:54:5515:1010:5015:10
10:50
#5015
2.13M
2.13 mi07:11:1131:2614:4516:16
22:17
#4993
6.43M
6.43 mi08:11:501:32:0514:191:00:39
14:06
#4975
6.62M
6.62 mi08:03:581:24:1312:43
-42:-22
#4980
10.65M
10.65 mi08:48:022:08:1712:0344:04
10:56
#4691
Finish
13.11 mi09:14:192:34:3411:4726:17
10:41
#4535
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
1.40M1.40 mi1.40 mi501529202035015(Top 83%)2920(Top 88%)203(Top 84%)
2.13M2.13 mi0.73 mi4993+222914+6201+25126(Top 84%)2967(Top 89%)207(Top 86%)
6.43M6.43 mi4.30 mi4975+182910+4204-34968(Top 82%)2902(Top 87%)203(Top 84%)
6.62M6.62 mi0.19 mi4980-52917-7203+1---
10.65M10.65 mi4.03 mi4691+2892785+132195+84103(Top 68%)2476(Top 74%)170(Top 71%)
Finish13.11 mi2.46 mi4535+1562702+83190+53998(Top 66%)2393(Top 72%)166(Top 69%)

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 83%
~flat
+3ft-2ft

Overall

5015

Males

2920

M45-49

203

1.40M→2.13M

1.4 - 2.1 mi

Top 84%
~flat
+3ft-1ft

Overall

5126

Males

2967

M45-49

209

2.13M→6.43M

2.1 - 6.4 mi

Top 82%
×17story building
+274ft-78ft

Overall

4968

Males

2902

M45-49

205

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Males

-

M45-49

-

6.62M→10.65M

6.6 - 10.7 mi

Top 68%
×21story building
+153ft-361ft

Overall

4103

Males

2476

M45-49

170

10.65M→Finish

10.7 - 13.1 mi

Top 66%
×17story building
+244ft-114ft

Overall

3998

Males

2393

M45-49

166

Passing Analysis

Category:
Athletes Passed
993*
Passed By
513
Net Change
+480
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.40M----#5015
1.40M → 2.13M178156+22#5015#4993
2.13M → 6.43M251*233+18#4993#4975
6.43M → 6.62M5661-5#4975#4980
6.62M → 10.65M324*35+289#4980#4691
10.65M → Finish184*28+156#4691#4535
TOTALS993*513+480

* 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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The San Francisco Marathon

The San Francisco Marathon

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