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SF MARATHON 1ST HALF 2023

Ka Fai Lei

Bib: 13779•M•Age: 33

San Francisco, CA

0:00
0:00
/ mi
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Overall
#0 / 6072
Top 42%
Gender (Male)
#0 / 3331
Division (M30-34)
#0 / 723
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
8:51/mi
12:24
→ flat
2.13M
18:38/mi
26:00
→ flat
6.43M
11:27/mi
1:15:14
↑ 274↓ 780.9%
6.62M
-36:-56/mi
1:08:24
↑ 161.6%
10.65M
9:48/mi
1:47:54
↑ 153↓ 3611.0%
Finish· 13.11 mi
9:44/mi
2:11:49
↑ 244↓ 1141.0%

The Course

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Half Splits

1st Half· via 6.62M
Distance6.62 mi
Time1:08:24
Pace10:20 /mi
2nd Half✓ Faster
Distance6.49 mi
Time1:03:25
Pace9:46 /mi
📊Negative Split: 7.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.40M
1.40 mi06:49:0312:248:5112:24
8:51
-
2.13M
2.13 mi07:02:3926:0012:1213:36
18:38
+9:47
6.43M
6.43 mi07:51:531:15:1411:4249:14
11:27
-7:11
6.62M
6.62 mi07:45:031:08:2410:20
-36:-56
-48:23
10.65M
10.65 mi08:24:331:47:5410:0839:30
9:48
+46:44
Finish
13.11 mi08:48:282:11:4910:0323:55
9:44
-0:04

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

-37:-56 /mi

Average Pace

10:03 /mi

Slowest Pace

18:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:49

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:03 /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 mi06:49:0312:248:5112:24
8:51
#2140
2.13M
2.13 mi07:02:3926:0012:1213:36
18:38
#2330
6.43M
6.43 mi07:51:531:15:1411:4249:14
11:27
#2368
6.62M
6.62 mi07:45:031:08:2410:20
-36:-56
#2308
10.65M
10.65 mi08:24:331:47:5410:0839:30
9:48
#2435
Finish
13.11 mi08:48:282:11:4910:0323:55
9:44
#2521
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
1.40M1.40 mi1.40 mi214014553072140(Top 35%)1455(Top 44%)307(Top 42%)
2.13M2.13 mi0.73 mi2330-1901578-123344-372667(Top 44%)1759(Top 53%)393(Top 54%)
6.43M6.43 mi4.30 mi2368-381607-29368-242493(Top 41%)1659(Top 50%)380(Top 53%)
6.62M6.62 mi0.19 mi2308+601571+36351+17---
10.65M10.65 mi4.03 mi2435-1271638-67373-222693(Top 44%)1764(Top 53%)412(Top 57%)
Finish13.11 mi2.46 mi2521-861668-30384-113012(Top 50%)1899(Top 57%)431(Top 60%)

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 35%
~flat
+3ft-2ft

Overall

2140

Males

1455

M30-34

309

1.40M→2.13M

1.4 - 2.1 mi

Top 44%
~flat
+3ft-1ft

Overall

2667

Males

1759

M30-34

396

2.13M→6.43M

2.1 - 6.4 mi

Top 41%
×17story building
+274ft-78ft

Overall

2493

Males

1659

M30-34

382

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Males

-

M30-34

-

6.62M→10.65M

6.6 - 10.7 mi

Top 44%
×21story building
+153ft-361ft

Overall

2693

Males

1764

M30-34

414

10.65M→Finish

10.7 - 13.1 mi

Top 50%
×17story building
+244ft-114ft

Overall

3012

Males

1899

M30-34

431

Passing Analysis

Category:
Athletes Passed
522*
Passed By
903
Net Change
-381
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.40M----#2140
1.40M → 2.13M89279-190#2140#2330
2.13M → 6.43M202*240-38#2330#2368
6.43M → 6.62M9333+60#2368#2308
6.62M → 10.65M82*209-127#2308#2435
10.65M → Finish56*142-86#2435#2521
TOTALS522*903-381

* 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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