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BOSTON MARATHON 2023

Jen Hao Hsu

Bib: 1247•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 24%
Division (M18-39)
#0 / 5285
Top 49%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:14
Rank: #2345
Start → 5K
20:14 | 6:31/mi
10K· 6.21 mi
41:00
Rank: #3154 (-809)
5K → 10K
20:46 | 6:41/mi
15K· 9.32 mi
1:02:35
Rank: #4156 (-1002)
10K → 15K
21:35 | 6:57/mi
20K· 12.43 mi
1:24:22
Rank: #4725 (-569)
15K → 20K
21:47 | 7:01/mi
Half· 13.11 mi
1:29:02
Rank: #4773 (-48)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:45:47
Rank: #4784 (-11)
Half → 25K
16:45 | 6:55/mi
30K· 18.64 mi
2:07:49
Rank: #4800 (-16)
25K → 30K
22:02 | 7:06/mi
20M
2:17:16
Rank: #4698 (+102)
30K → 20M
9:27 | 6:57/mi
21M
2:24:34
Rank: #4615 (+83)
20M → 21M
7:18 | 7:18/mi
35K· 21.75 mi
2:29:24
Rank: #4484 (+131)
21M → 35K
4:50 | 6:28/mi
23M
2:37:51
Rank: #4290 (+194)
35K → 23M
8:27 | 6:45/mi
24M
2:44:25
Rank: #4186 (+104)
23M → 24M
6:34 | 6:34/mi
40K· 24.85 mi
2:50:10
Rank: #4082 (+104)
24M → 40K
5:45 | 6:44/mi
25.2M
2:52:39
Rank: #4040 (+42)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:59:12
Rank: #3920 (+120)
25.2M → Finish
6:33 | 6:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:02
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:30:10
Pace6:53 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:2920:146:3120:14
6:31
-
10K
6.21 mi10:41:1541:006:3620:46
6:41
+0:10
15K
9.32 mi11:02:501:02:356:4321:35
6:57
+0:16
20K
12.43 mi11:24:371:24:226:4721:47
7:01
+0:04
Half
13.11 mi11:29:171:29:026:474:40
6:50
-0:11
25K
15.53 mi11:46:021:45:476:4916:45
6:55
+0:05
30K
18.64 mi12:08:042:07:496:5122:02
7:06
+0:11
20M
20.00 mi12:17:312:17:166:529:27
6:57
-0:09
21M
21.00 mi12:24:492:24:346:537:18
7:18
+0:21
35K
21.75 mi12:29:392:29:246:524:50
6:28
-0:50
23M
23.00 mi12:38:062:37:516:528:27
6:45
+0:17
24M
24.00 mi12:44:402:44:256:516:34
6:34
-0:11
40K
24.85 mi12:50:252:50:106:515:45
6:44
+0:10
25.2M
25.20 mi12:52:542:52:396:512:29
7:12
+0:28
Finish
26.22 mi12:59:272:59:126:506:33
6:26
-0:46

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

6:26 /mi

Average Pace

6:50 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:23

82% of race

Time at Steady Pace

31:49

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:20:2920:146:3120:14
6:31
#2345
10K
6.21 mi10:41:1541:006:3620:46
6:41
#3154
15K
9.32 mi11:02:501:02:356:4321:35
6:57
#4156
20K
12.43 mi11:24:371:24:226:4721:47
7:01
#4725
Half
13.11 mi11:29:171:29:026:474:40
6:50
#4773
25K
15.53 mi11:46:021:45:476:4916:45
6:55
#4784
30K
18.64 mi12:08:042:07:496:5122:02
7:06
#4800
20M
20.00 mi12:17:312:17:166:529:27
6:57
#4698
21M
21.00 mi12:24:492:24:346:537:18
7:18
#4615
35K
21.75 mi12:29:392:29:246:524:50
6:28
#4484
23M
23.00 mi12:38:062:37:516:528:27
6:45
#4290
24M
24.00 mi12:44:402:44:256:516:34
6:34
#4186
40K
24.85 mi12:50:252:50:106:515:45
6:44
#4082
25.2M
25.20 mi12:52:542:52:396:512:29
7:12
#4040
Finish
26.22 mi12:59:272:59:126:506:33
6:26
#3920
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2345223722376235(Top 23%)5645(Top 37%)5645(Top 107%)
10K6.21 mi3.10 mi3154-8092995-7582995-7584193(Top 16%)3931(Top 26%)3931(Top 74%)
15K9.32 mi3.11 mi4156-10023902-9073902-9076235(Top 23%)5645(Top 37%)5645(Top 107%)
20K12.43 mi3.11 mi4725-5694409-5074409-5076039(Top 23%)5500(Top 36%)5500(Top 104%)
Half13.11 mi0.68 mi4773-484447-384447-385509(Top 21%)5069(Top 33%)5069(Top 96%)
25K15.53 mi2.42 mi4784-114453-64453-64993(Top 19%)4618(Top 30%)4618(Top 87%)
30K18.64 mi3.11 mi4800-164466-134466-134865(Top 18%)4477(Top 30%)4477(Top 85%)
20M20.00 mi1.36 mi4698+1024380+864380+863736(Top 14%)3480(Top 23%)3480(Top 66%)
21M21.00 mi1.00 mi4615+834298+824298+823606(Top 14%)3346(Top 22%)3346(Top 63%)
35K21.75 mi0.75 mi4484+1314181+1174181+1172266(Top 9%)2153(Top 14%)2153(Top 41%)
23M23.00 mi1.25 mi4290+1944014+1674014+1672398(Top 9%)2255(Top 15%)2255(Top 43%)
24M24.00 mi1.00 mi4186+1043917+973917+972415(Top 9%)2258(Top 15%)2258(Top 43%)
40K24.85 mi0.85 mi4082+1043819+983819+982488(Top 9%)2308(Top 15%)2308(Top 44%)
25.2M25.20 mi0.35 mi4040+423780+393780+392562(Top 10%)2375(Top 16%)2375(Top 45%)
Finish26.22 mi1.02 mi3920+1203675+1053675+1052155(Top 8%)2000(Top 13%)2000(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6235

Males

5645

M18-39

5645

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4193

Males

3931

M18-39

3931

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6235

Males

5645

M18-39

5645

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6039

Males

5500

M18-39

5500

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5509

Males

5069

M18-39

5069

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

4993

Males

4618

M18-39

4618

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4865

Males

4477

M18-39

4477

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3736

Males

3480

M18-39

3480

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3606

Males

3346

M18-39

3346

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2266

Males

2153

M18-39

2153

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2398

Males

2255

M18-39

2255

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2415

Males

2258

M18-39

2258

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2488

Males

2308

M18-39

2308

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2562

Males

2375

M18-39

2375

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2155

Males

2000

M18-39

2000

Passing Analysis

Category:
Athletes Passed
1215
Passed By
2790
Net Change
-1575
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2345
5K → 10K6815-809#2345#3154
10K → 15K71009-1002#3154#4156
15K → 20K12581-569#4156#4725
20K → Half1361-48#4725#4773
Half → 25K92103-11#4773#4784
25K → 30K133149-16#4784#4800
30K → 20M11917+102#4800#4698
20M → 21M10118+83#4698#4615
21M → 35K1321+131#4615#4484
35K → 23M2039+194#4484#4290
23M → 24M11511+104#4290#4186
24M → 40K1106+104#4186#4082
40K → 25.2M464+42#4082#4040
25.2M → Finish1266+120#4040#3920
TOTALS12152790-1575
📊

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