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BOSTON MARATHON 2023

Stephen Tai

Bib: 5893•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 18%
Division (M18-39)
#0 / 5285
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:21
Rank: #2551
Start → 5K
20:21 | 6:33/mi
10K· 6.21 mi
40:59
Rank: #3129 (-578)
5K → 10K
20:38 | 6:38/mi
15K· 9.32 mi
1:01:39
Rank: #3299 (-170)
10K → 15K
20:40 | 6:39/mi
20K· 12.43 mi
1:22:24
Rank: #3303 (-4)
15K → 20K
20:45 | 6:41/mi
Half· 13.11 mi
1:26:56
Rank: #3330 (-27)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:43:03
Rank: #3236 (+94)
Half → 25K
16:07 | 6:39/mi
30K· 18.64 mi
2:04:17
Rank: #3174 (+62)
25K → 30K
21:14 | 6:50/mi
20M
2:13:30
Rank: #3109 (+65)
30K → 20M
9:13 | 6:47/mi
21M
2:20:35
Rank: #3051 (+58)
20M → 21M
7:05 | 7:05/mi
35K· 21.75 mi
2:25:27
Rank: #3005 (+46)
21M → 35K
4:52 | 6:30/mi
23M
2:33:55
Rank: #2936 (+69)
35K → 23M
8:28 | 6:46/mi
24M
2:40:33
Rank: #2908 (+28)
23M → 24M
6:38 | 6:38/mi
40K· 24.85 mi
2:46:23
Rank: #2876 (+32)
24M → 40K
5:50 | 6:49/mi
25.2M
2:48:53
Rank: #2859 (+17)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:55:25
Rank: #2804 (+55)
25.2M → Finish
6:32 | 6:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:56
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:28:29
Pace6:45 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1920:216:3320:21
6:33
-
10K
6.21 mi10:43:5740:596:3620:38
6:38
+0:05
15K
9.32 mi11:04:371:01:396:3720:40
6:39
+0:01
20K
12.43 mi11:25:221:22:246:3820:45
6:41
+0:02
Half
13.11 mi11:29:541:26:566:384:32
6:39
-0:02
25K
15.53 mi11:46:011:43:036:3816:07
6:39
0:00
30K
18.64 mi12:07:152:04:176:4021:14
6:50
+0:11
20M
20.00 mi12:16:282:13:306:409:13
6:47
-0:03
21M
21.00 mi12:23:332:20:356:427:05
7:05
+0:18
35K
21.75 mi12:28:252:25:276:414:52
6:30
-0:35
23M
23.00 mi12:36:532:33:556:428:28
6:46
+0:16
24M
24.00 mi12:43:312:40:336:416:38
6:38
-0:08
40K
24.85 mi12:49:212:46:236:425:50
6:49
+0:11
25.2M
25.20 mi12:51:512:48:536:422:30
7:15
+0:26
Finish
26.22 mi12:58:232:55:256:426:32
6:25
-0:50

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

6:25 /mi

Average Pace

6:42 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:50

95% of race

Time at Steady Pace

9:35

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:41 /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...
0mi6.6mi13.1mi19.7mi26.2mi
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
5K
3.11 mi10:23:1920:216:3320:21
6:33
#2551
10K
6.21 mi10:43:5740:596:3620:38
6:38
#3129
15K
9.32 mi11:04:371:01:396:3720:40
6:39
#3299
20K
12.43 mi11:25:221:22:246:3820:45
6:41
#3303
Half
13.11 mi11:29:541:26:566:384:32
6:39
#3330
25K
15.53 mi11:46:011:43:036:3816:07
6:39
#3236
30K
18.64 mi12:07:152:04:176:4021:14
6:50
#3174
20M
20.00 mi12:16:282:13:306:409:13
6:47
#3109
21M
21.00 mi12:23:332:20:356:427:05
7:05
#3051
35K
21.75 mi12:28:252:25:276:414:52
6:30
#3005
23M
23.00 mi12:36:532:33:556:428:28
6:46
#2936
24M
24.00 mi12:43:312:40:336:416:38
6:38
#2908
40K
24.85 mi12:49:212:46:236:425:50
6:49
#2876
25.2M
25.20 mi12:51:512:48:536:422:30
7:15
#2859
Finish
26.22 mi12:58:232:55:256:426:32
6:25
#2804
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2551243424343691(Top 14%)3479(Top 23%)3479(Top 66%)
10K6.21 mi3.10 mi3129-5782971-5372971-5373790(Top 14%)3574(Top 24%)3574(Top 68%)
15K9.32 mi3.11 mi3299-1703133-1623133-1623691(Top 14%)3479(Top 23%)3479(Top 66%)
20K12.43 mi3.11 mi3303-43140-73140-73385(Top 13%)3208(Top 21%)3208(Top 61%)
Half13.11 mi0.68 mi3330-273166-263166-263724(Top 14%)3508(Top 23%)3508(Top 66%)
25K15.53 mi2.42 mi3236+943084+823084+822981(Top 11%)2841(Top 19%)2841(Top 54%)
30K18.64 mi3.11 mi3174+623023+613023+613203(Top 12%)3018(Top 20%)3018(Top 57%)
20M20.00 mi1.36 mi3109+652960+632960+632701(Top 10%)2555(Top 17%)2555(Top 48%)
21M21.00 mi1.00 mi3051+582899+612899+612546(Top 10%)2404(Top 16%)2404(Top 45%)
35K21.75 mi0.75 mi3005+462857+422857+422443(Top 9%)2315(Top 15%)2315(Top 44%)
23M23.00 mi1.25 mi2936+692792+652792+652442(Top 9%)2294(Top 15%)2294(Top 43%)
24M24.00 mi1.00 mi2908+282764+282764+282738(Top 10%)2547(Top 17%)2547(Top 48%)
40K24.85 mi0.85 mi2876+322733+312733+312927(Top 11%)2694(Top 18%)2694(Top 51%)
25.2M25.20 mi0.35 mi2859+172717+162717+162695(Top 10%)2481(Top 16%)2481(Top 47%)
Finish26.22 mi1.02 mi2804+552663+542663+542062(Top 8%)1917(Top 13%)1917(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3691

Males

3479

M18-39

3479

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3790

Males

3574

M18-39

3574

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3691

Males

3479

M18-39

3479

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3385

Males

3208

M18-39

3208

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3724

Males

3508

M18-39

3508

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

2981

Males

2841

M18-39

2841

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3203

Males

3018

M18-39

3018

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2701

Males

2555

M18-39

2555

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2546

Males

2404

M18-39

2404

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2443

Males

2315

M18-39

2315

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2442

Males

2294

M18-39

2294

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2738

Males

2547

M18-39

2547

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2927

Males

2694

M18-39

2694

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2695

Males

2481

M18-39

2481

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2062

Males

1917

M18-39

1917

Passing Analysis

Category:
Athletes Passed
903
Passed By
1156
Net Change
-253
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2551
5K → 10K22600-578#2551#3129
10K → 15K36206-170#3129#3299
15K → 20K8286-4#3299#3303
20K → Half1138-27#3303#3330
Half → 25K11521+94#3330#3236
25K → 30K12866+62#3236#3174
30K → 20M8116+65#3174#3109
20M → 21M8325+58#3109#3051
21M → 35K548+46#3051#3005
35K → 23M8718+69#3005#2936
23M → 24M5628+28#2936#2908
24M → 40K5523+32#2908#2876
40K → 25.2M269+17#2876#2859
25.2M → Finish6712+55#2859#2804
TOTALS9031156-253
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing