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BOSTON MARATHON 2023

Xiao Chen

Bib: 691•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 1%
Gender (Male)
#0 / 15176
Top 2%
Division (M18-39)
#0 / 5285
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:18
Rank: #509
Start → 5K
18:18 | 5:53/mi
10K· 6.21 mi
36:26
Rank: #490 (+19)
5K → 10K
18:08 | 5:50/mi
15K· 9.32 mi
54:38
Rank: #464 (+26)
10K → 15K
18:12 | 5:51/mi
20K· 12.43 mi
1:12:55
Rank: #438 (+26)
15K → 20K
18:17 | 5:53/mi
Half· 13.11 mi
1:16:52
Rank: #432 (+6)
20K → Half
3:57 | 5:47/mi
25K· 15.53 mi
1:30:58
Rank: #412 (+20)
Half → 25K
14:06 | 5:49/mi
30K· 18.64 mi
1:49:14
Rank: #369 (+43)
25K → 30K
18:16 | 5:53/mi
20M
1:57:17
Rank: #361 (+8)
30K → 20M
8:03 | 5:55/mi
21M
2:03:32
Rank: #347 (+14)
20M → 21M
6:15 | 6:15/mi
35K· 21.75 mi
2:07:49
Rank: #336 (+11)
21M → 35K
4:17 | 5:44/mi
23M
2:15:16
Rank: #328 (+8)
35K → 23M
7:27 | 5:57/mi
24M
2:21:01
Rank: #314 (+14)
23M → 24M
5:45 | 5:45/mi
40K· 24.85 mi
2:26:02
Rank: #301 (+13)
24M → 40K
5:01 | 5:52/mi
25.2M
2:28:17
Rank: #297 (+4)
40K → 25.2M
2:15 | 6:31/mi
Finish· 26.22 mi
2:34:21
Rank: #296 (+1)
25.2M → Finish
6:04 | 5:57/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:16:52
Pace5:52 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:17:29
Pace5:55 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3218:185:5318:18
5:53
-
10K
6.21 mi10:36:4036:265:5218:08
5:50
-0:03
15K
9.32 mi10:54:5254:385:5218:12
5:51
+0:01
20K
12.43 mi11:13:091:12:555:5218:17
5:53
+0:02
Half
13.11 mi11:17:061:16:525:523:57
5:47
-0:06
25K
15.53 mi11:31:121:30:585:5114:06
5:49
+0:02
30K
18.64 mi11:49:281:49:145:5218:16
5:53
+0:04
20M
20.00 mi11:57:311:57:175:528:03
5:55
+0:02
21M
21.00 mi12:03:462:03:325:536:15
6:15
+0:20
35K
21.75 mi12:08:032:07:495:534:17
5:44
-0:31
23M
23.00 mi12:15:302:15:165:537:27
5:57
+0:13
24M
24.00 mi12:21:152:21:015:535:45
5:45
-0:12
40K
24.85 mi12:26:162:26:025:535:01
5:52
+0:07
25.2M
25.20 mi12:28:312:28:175:532:15
6:31
+0:39
Finish
26.22 mi12:34:352:34:215:536:04
5:57
-0:34

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

5:44 /mi

Average Pace

5:53 /mi

Slowest Pace

6:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:06

99% of race

Time at Steady Pace

2:15

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:53 /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 mi10:18:3218:185:5318:18
5:53
#509
10K
6.21 mi10:36:4036:265:5218:08
5:50
#490
15K
9.32 mi10:54:5254:385:5218:12
5:51
#464
20K
12.43 mi11:13:091:12:555:5218:17
5:53
#438
Half
13.11 mi11:17:061:16:525:523:57
5:47
#432
25K
15.53 mi11:31:121:30:585:5114:06
5:49
#412
30K
18.64 mi11:49:281:49:145:5218:16
5:53
#369
20M
20.00 mi11:57:311:57:175:528:03
5:55
#361
21M
21.00 mi12:03:462:03:325:536:15
6:15
#347
35K
21.75 mi12:08:032:07:495:534:17
5:44
#336
23M
23.00 mi12:15:302:15:165:537:27
5:57
#328
24M
24.00 mi12:21:152:21:015:535:45
5:45
#314
40K
24.85 mi12:26:162:26:025:535:01
5:52
#301
25.2M
25.20 mi12:28:312:28:175:532:15
6:31
#297
Finish
26.22 mi12:34:352:34:215:536:04
5:57
#296
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi509469469438(Top 2%)404(Top 3%)404(Top 8%)
10K6.21 mi3.10 mi490+19452+17452+17479(Top 2%)443(Top 3%)443(Top 8%)
15K9.32 mi3.11 mi464+26428+24428+24438(Top 2%)404(Top 3%)404(Top 8%)
20K12.43 mi3.11 mi438+26402+26402+26398(Top 1%)365(Top 2%)365(Top 7%)
Half13.11 mi0.68 mi432+6397+5397+5372(Top 1%)343(Top 2%)343(Top 6%)
25K15.53 mi2.42 mi412+20377+20377+20297(Top 1%)269(Top 2%)269(Top 5%)
30K18.64 mi3.11 mi369+43337+40337+40226(Top 0.8%)203(Top 1%)203(Top 4%)
20M20.00 mi1.36 mi361+8329+8329+8270(Top 1%)246(Top 2%)246(Top 5%)
21M21.00 mi1.00 mi347+14315+14315+14292(Top 1%)267(Top 2%)267(Top 5%)
35K21.75 mi0.75 mi336+11305+10305+10262(Top 1.0%)237(Top 2%)237(Top 4%)
23M23.00 mi1.25 mi328+8297+8297+8261(Top 1.0%)236(Top 2%)236(Top 4%)
24M24.00 mi1.00 mi314+14283+14283+14203(Top 0.8%)180(Top 1%)180(Top 3%)
40K24.85 mi0.85 mi301+13271+12271+12194(Top 0.7%)173(Top 1%)173(Top 3%)
25.2M25.20 mi0.35 mi297+4267+4267+4519(Top 2%)487(Top 3%)487(Top 9%)
Finish26.22 mi1.02 mi296+1268-1268-1609(Top 2%)578(Top 4%)578(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

438

Males

404

M18-39

404

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

479

Males

443

M18-39

443

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

438

Males

404

M18-39

404

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

398

Males

365

M18-39

365

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

372

Males

343

M18-39

343

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

297

Males

269

M18-39

269

25K→30K

15.5 - 18.6 mi

Top 0.8%
×9stories
+181ft-148ft

Overall

226

Males

203

M18-39

203

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

270

Males

246

M18-39

246

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

292

Males

267

M18-39

267

21M→35K

21.0 - 21.8 mi

Top 1.0%
×7stories
+17ft-86ft

Overall

262

Males

237

M18-39

237

35K→23M

21.8 - 23.0 mi

Top 1.0%
×5stories
+23ft-63ft

Overall

261

Males

236

M18-39

236

23M→24M

23.0 - 24.0 mi

Top 0.8%
×6stories
+12ft-82ft

Overall

203

Males

180

M18-39

180

24M→40K

24.0 - 24.9 mi

Top 0.7%
×1story
+6ft-20ft

Overall

194

Males

173

M18-39

173

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

519

Males

487

M18-39

487

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

609

Males

578

M18-39

578

Passing Analysis

Category:
Athletes Passed
270
Passed By
57
Net Change
+213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#509
5K → 10K4122+19#509#490
10K → 15K3610+26#490#464
15K → 20K293+26#464#438
20K → Half71+6#438#432
Half → 25K211+20#432#412
25K → 30K441+43#412#369
30K → 20M113+8#369#361
20M → 21M162+14#361#347
21M → 35K110+11#347#336
35K → 23M135+8#336#328
23M → 24M140+14#328#314
24M → 40K141+13#314#301
40K → 25.2M40+4#301#297
25.2M → Finish98+1#297#296
TOTALS27057+213
📊

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