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BOSTON MARATHON 2023

Ethan Limchayseng

Bib: 4433•M

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 30%
Gender (Male)
#0 / 15176
Top 44%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:51
Rank: #11224
Start → 5K
23:51 | 7:41/mi
10K· 6.21 mi
47:19
Rank: #11035 (+189)
5K → 10K
23:28 | 7:33/mi
15K· 9.32 mi
1:10:13
Rank: #10358 (+677)
10K → 15K
22:54 | 7:22/mi
20K· 12.43 mi
1:33:00
Rank: #9677 (+681)
15K → 20K
22:47 | 7:20/mi
Half· 13.11 mi
1:37:55
Rank: #9577 (+100)
20K → Half
4:55 | 7:12/mi
25K· 15.53 mi
1:55:39
Rank: #9167 (+410)
Half → 25K
17:44 | 7:19/mi
30K· 18.64 mi
2:19:04
Rank: #8825 (+342)
25K → 30K
23:25 | 7:32/mi
20M
2:29:14
Rank: #8644 (+181)
30K → 20M
10:10 | 7:29/mi
21M
2:36:56
Rank: #8448 (+196)
20M → 21M
7:42 | 7:42/mi
35K· 21.75 mi
2:42:16
Rank: #8337 (+111)
21M → 35K
5:20 | 7:08/mi
23M
2:51:40
Rank: #8171 (+166)
35K → 23M
9:24 | 7:30/mi
24M
2:59:11
Rank: #8131 (+40)
23M → 24M
7:31 | 7:31/mi
40K· 24.85 mi
3:05:40
Rank: #8070 (+61)
24M → 40K
6:29 | 7:35/mi
25.2M
3:08:24
Rank: #8025 (+45)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:15:33
Rank: #7884 (+141)
25.2M → Finish
7:09 | 7:01/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:37:55
Pace7:28 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:37:38
Pace7:27 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4423:517:4123:51
7:41
-
10K
6.21 mi10:49:1247:197:3723:28
7:33
-0:08
15K
9.32 mi11:12:061:10:137:3222:54
7:22
-0:11
20K
12.43 mi11:34:531:33:007:2922:47
7:20
-0:02
Half
13.11 mi11:39:481:37:557:284:55
7:12
-0:08
25K
15.53 mi11:57:321:55:397:2717:44
7:19
+0:07
30K
18.64 mi12:20:572:19:047:2823:25
7:32
+0:13
20M
20.00 mi12:31:072:29:147:2810:10
7:29
-0:03
21M
21.00 mi12:38:492:36:567:287:42
7:42
+0:13
35K
21.75 mi12:44:092:42:167:285:20
7:08
-0:34
23M
23.00 mi12:53:332:51:407:289:24
7:30
+0:22
24M
24.00 mi13:01:042:59:117:287:31
7:31
+0:01
40K
24.85 mi13:07:333:05:407:286:29
7:35
+0:04
25.2M
25.20 mi13:10:173:08:247:292:44
7:56
+0:21
Finish
26.22 mi13:17:263:15:337:287:09
7:01
-0:55

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

7:01 /mi

Average Pace

7:28 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:49

99% of race

Time at Steady Pace

2:44

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:27 /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 mi10:25:4423:517:4123:51
7:41
#11224
10K
6.21 mi10:49:1247:197:3723:28
7:33
#11035
15K
9.32 mi11:12:061:10:137:3222:54
7:22
#10358
20K
12.43 mi11:34:531:33:007:2922:47
7:20
#9677
Half
13.11 mi11:39:481:37:557:284:55
7:12
#9577
25K
15.53 mi11:57:321:55:397:2717:44
7:19
#9167
30K
18.64 mi12:20:572:19:047:2823:25
7:32
#8825
20M
20.00 mi12:31:072:29:147:2810:10
7:29
#8644
21M
21.00 mi12:38:492:36:567:287:42
7:42
#8448
35K
21.75 mi12:44:092:42:167:285:20
7:08
#8337
23M
23.00 mi12:53:332:51:407:289:24
7:30
#8171
24M
24.00 mi13:01:042:59:117:287:31
7:31
#8131
40K
24.85 mi13:07:333:05:407:286:29
7:35
#8070
25.2M
25.20 mi13:10:173:08:247:292:44
7:56
#8025
Finish
26.22 mi13:17:263:15:337:287:09
7:01
#7884
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi11224875887589084(Top 34%)7587(Top 50%)7587(Top 144%)
10K6.21 mi3.10 mi11035+1898672+868672+8610884(Top 41%)8613(Top 57%)8613(Top 163%)
15K9.32 mi3.11 mi10358+6778353+3198353+3199084(Top 34%)7587(Top 50%)7587(Top 144%)
20K12.43 mi3.11 mi9677+6817970+3837970+3838033(Top 30%)6908(Top 46%)6908(Top 131%)
Half13.11 mi0.68 mi9577+1007908+627908+627876(Top 30%)6824(Top 45%)6824(Top 129%)
25K15.53 mi2.42 mi9167+4107648+2607648+2607371(Top 28%)6399(Top 42%)6399(Top 121%)
30K18.64 mi3.11 mi8825+3427398+2507398+2507471(Top 28%)6369(Top 42%)6369(Top 121%)
20M20.00 mi1.36 mi8644+1817265+1337265+1336668(Top 25%)5756(Top 38%)5756(Top 109%)
21M21.00 mi1.00 mi8448+1967116+1497116+1495630(Top 21%)4931(Top 32%)4931(Top 93%)
35K21.75 mi0.75 mi8337+1117040+767040+766103(Top 23%)5311(Top 35%)5311(Top 100%)
23M23.00 mi1.25 mi8171+1666912+1286912+1286461(Top 24%)5483(Top 36%)5483(Top 104%)
24M24.00 mi1.00 mi8131+406867+456867+457795(Top 29%)6190(Top 41%)6190(Top 117%)
40K24.85 mi0.85 mi8070+616809+586809+587198(Top 27%)5746(Top 38%)5746(Top 109%)
25.2M25.20 mi0.35 mi8025+456771+386771+386073(Top 23%)5004(Top 33%)5004(Top 95%)
Finish26.22 mi1.02 mi7884+1416665+1066665+1065311(Top 20%)4491(Top 30%)4491(Top 85%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9084

Males

7587

M18-39

7587

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10884

Males

8613

M18-39

8613

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9084

Males

7587

M18-39

7587

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8033

Males

6908

M18-39

6908

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

7876

Males

6824

M18-39

6824

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

7371

Males

6399

M18-39

6399

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7471

Males

6369

M18-39

6369

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6668

Males

5756

M18-39

5756

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5630

Males

4931

M18-39

4931

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6103

Males

5311

M18-39

5311

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6461

Males

5483

M18-39

5483

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7795

Males

6190

M18-39

6190

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7198

Males

5746

M18-39

5746

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6073

Males

5004

M18-39

5004

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5311

Males

4491

M18-39

4491

Passing Analysis

Category:
Athletes Passed
3740*
Passed By
400
Net Change
+3340
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11224
5K → 10K407218+189#11224#11035
10K → 15K69922+677#11035#10358
15K → 20K685*4+681#10358#9677
20K → Half1011+100#9677#9577
Half → 25K4100+410#9577#9167
25K → 30K37432+342#9167#8825
30K → 20M1898+181#8825#8644
20M → 21M2015+196#8644#8448
21M → 35K1187+111#8448#8337
35K → 23M18014+166#8337#8171
23M → 24M8444+40#8171#8131
24M → 40K8625+61#8131#8070
40K → 25.2M549+45#8070#8025
25.2M → Finish15211+141#8025#7884
TOTALS3740*400+3340

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

📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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