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BOSTON MARATHON 2023

Jin-Sheng Su

Bib: 13489•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 40%
Division (M50-54)
#0 / 2052
Top 39%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:22
Rank: #12754
Start → 5K
24:22 | 7:51/mi
10K· 6.21 mi
47:22
Rank: #11110 (+1644)
5K → 10K
23:00 | 7:24/mi
15K· 9.32 mi
1:10:53
Rank: #10959 (+151)
10K → 15K
23:31 | 7:34/mi
20K· 12.43 mi
1:34:08
Rank: #10468 (+491)
15K → 20K
23:15 | 7:29/mi
Half· 13.11 mi
1:39:13
Rank: #10437 (+31)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:57:56
Rank: #10422 (+15)
Half → 25K
18:43 | 7:43/mi
30K· 18.64 mi
2:21:55
Rank: #10070 (+352)
25K → 30K
23:59 | 7:43/mi
20M
2:32:30
Rank: #9935 (+135)
30K → 20M
10:35 | 7:47/mi
21M
2:40:41
Rank: #9811 (+124)
20M → 21M
8:11 | 8:11/mi
35K· 21.75 mi
2:46:37
Rank: #9887 (-76)
21M → 35K
5:56 | 7:56/mi
23M
2:56:36
Rank: #9827 (+60)
35K → 23M
9:59 | 7:58/mi
24M
3:04:23
Rank: #9789 (+38)
23M → 24M
7:47 | 7:47/mi
40K· 24.85 mi
3:11:11
Rank: #9770 (+19)
24M → 40K
6:48 | 7:57/mi
25.2M
3:14:04
Rank: #9729 (+41)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:21:59
Rank: #9720 (+9)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:13
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:42:46
Pace7:50 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3024:227:5124:22
7:51
-
10K
6.21 mi11:15:3047:227:3723:00
7:24
-0:27
15K
9.32 mi11:39:011:10:537:3623:31
7:34
+0:10
20K
12.43 mi12:02:161:34:087:3423:15
7:29
-0:05
Half
13.11 mi12:07:211:39:137:345:05
7:27
-0:02
25K
15.53 mi12:26:041:57:567:3618:43
7:43
+0:16
30K
18.64 mi12:50:032:21:557:3723:59
7:43
0:00
20M
20.00 mi13:00:382:32:307:3710:35
7:47
+0:04
21M
21.00 mi13:08:492:40:417:398:11
8:11
+0:24
35K
21.75 mi13:14:452:46:377:405:56
7:56
-0:15
23M
23.00 mi13:24:442:56:367:419:59
7:58
+0:02
24M
24.00 mi13:32:313:04:237:417:47
7:47
-0:11
40K
24.85 mi13:39:193:11:117:426:48
7:57
+0:10
25.2M
25.20 mi13:42:123:14:047:422:53
8:22
+0:25
Finish
26.22 mi13:50:073:21:597:437:55
7:46
-0:36

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

7:24 /mi

Average Pace

7:43 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:55

95% of race

Time at Steady Pace

11:04

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:42 /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 mi10:52:3024:227:5124:22
7:51
#12754
10K
6.21 mi11:15:3047:227:3723:00
7:24
#11110
15K
9.32 mi11:39:011:10:537:3623:31
7:34
#10959
20K
12.43 mi12:02:161:34:087:3423:15
7:29
#10468
Half
13.11 mi12:07:211:39:137:345:05
7:27
#10437
25K
15.53 mi12:26:041:57:567:3618:43
7:43
#10422
30K
18.64 mi12:50:032:21:557:3723:59
7:43
#10070
20M
20.00 mi13:00:382:32:307:3710:35
7:47
#9935
21M
21.00 mi13:08:492:40:417:398:11
8:11
#9811
35K
21.75 mi13:14:452:46:377:405:56
7:56
#9887
23M
23.00 mi13:24:442:56:367:419:59
7:58
#9827
24M
24.00 mi13:32:313:04:237:417:47
7:47
#9789
40K
24.85 mi13:39:193:11:117:426:48
7:57
#9770
25.2M
25.20 mi13:42:123:14:047:422:53
8:22
#9729
Finish
26.22 mi13:50:073:21:597:437:55
7:46
#9720
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi127549426942610742(Top 40%)8524(Top 56%)8524(Top 415%)
10K6.21 mi3.10 mi11110+16448712+7148712+7149644(Top 36%)7956(Top 52%)7956(Top 388%)
15K9.32 mi3.11 mi10959+1518631+818631+8110742(Top 40%)8524(Top 56%)8524(Top 415%)
20K12.43 mi3.11 mi10468+4918399+2328399+2329183(Top 34%)7612(Top 50%)7612(Top 371%)
Half13.11 mi0.68 mi10437+318377+228377+229779(Top 37%)7972(Top 53%)7972(Top 388%)
25K15.53 mi2.42 mi10422+158350+278350+2710430(Top 39%)8214(Top 54%)8214(Top 400%)
30K18.64 mi3.11 mi10070+3528134+2168134+2168785(Top 33%)7154(Top 47%)7154(Top 349%)
20M20.00 mi1.36 mi9935+1358033+1018033+1018758(Top 33%)7056(Top 46%)7056(Top 344%)
21M21.00 mi1.00 mi9811+1247941+927941+928526(Top 32%)6793(Top 45%)6793(Top 331%)
35K21.75 mi0.75 mi9887-767962-217962-2111571(Top 43%)8363(Top 55%)8363(Top 408%)
23M23.00 mi1.25 mi9827+607895+677895+679556(Top 36%)7260(Top 48%)7260(Top 354%)
24M24.00 mi1.00 mi9789+387845+507845+509632(Top 36%)7211(Top 48%)7211(Top 351%)
40K24.85 mi0.85 mi9770+197803+427803+429705(Top 36%)7183(Top 47%)7183(Top 350%)
25.2M25.20 mi0.35 mi9729+417774+297774+298643(Top 32%)6544(Top 43%)6544(Top 319%)
Finish26.22 mi1.02 mi9720+97734+407734+4010423(Top 39%)7507(Top 49%)7507(Top 366%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

10742

Males

8524

M50-54

8524

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

9644

Males

7956

M50-54

7956

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

10742

Males

8524

M50-54

8524

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9183

Males

7612

M50-54

7612

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9779

Males

7972

M50-54

7972

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

10430

Males

8214

M50-54

8214

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8785

Males

7154

M50-54

7154

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8758

Males

7056

M50-54

7056

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

8526

Males

6793

M50-54

6793

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11571

Males

8363

M50-54

8363

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9556

Males

7260

M50-54

7260

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

9632

Males

7211

M50-54

7211

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9705

Males

7183

M50-54

7183

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8643

Males

6544

M50-54

6544

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10423

Males

7507

M50-54

7507

Passing Analysis

Category:
Athletes Passed
3721*
Passed By
687
Net Change
+3034
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12754
5K → 10K166622+1644#12754#11110
10K → 15K256105+151#11110#10959
15K → 20K50817+491#10959#10468
20K → Half4918+31#10468#10437
Half → 25K145130+15#10437#10422
25K → 30K373*21+352#10422#10070
30K → 20M164*29+135#10070#9935
20M → 21M14824+124#9935#9811
21M → 35K2399-76#9811#9887
35K → 23M10848+60#9887#9827
23M → 24M7941+38#9827#9789
24M → 40K75*56+19#9789#9770
40K → 25.2M5514+41#9770#9729
25.2M → Finish72*63+9#9729#9720
TOTALS3721*687+3034

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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