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BOSTON MARATHON 2023

Xu Chen

Bib: 8228•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 27%
Gender (Male)
#0 / 15176
Top 41%
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
22:00
Rank: #6756
Start → 5K
22:00 | 7:05/mi
10K· 6.21 mi
43:46
Rank: #6755 (+1)
5K → 10K
21:46 | 7:00/mi
15K· 9.32 mi
1:05:55
Rank: #6921 (-166)
10K → 15K
22:09 | 7:08/mi
20K· 12.43 mi
1:28:15
Rank: #6947 (-26)
15K → 20K
22:20 | 7:11/mi
Half· 13.11 mi
1:33:07
Rank: #6957 (-10)
20K → Half
4:52 | 7:08/mi
25K· 15.53 mi
1:50:47
Rank: #6956 (+1)
Half → 25K
17:40 | 7:17/mi
30K· 18.64 mi
2:14:24
Rank: #7046 (-90)
25K → 30K
23:37 | 7:36/mi
20M
2:24:55
Rank: #7088 (-42)
30K → 20M
10:31 | 7:44/mi
21M
2:32:58
Rank: #7075 (+13)
20M → 21M
8:03 | 8:03/mi
35K· 21.75 mi
2:38:28
Rank: #7079 (-4)
21M → 35K
5:30 | 7:21/mi
23M
2:48:15
Rank: #7103 (-24)
35K → 23M
9:47 | 7:49/mi
24M
2:56:04
Rank: #7200 (-97)
23M → 24M
7:49 | 7:49/mi
40K· 24.85 mi
3:02:48
Rank: #7234 (-34)
24M → 40K
6:44 | 7:53/mi
25.2M
3:05:42
Rank: #7238 (-4)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:13:20
Rank: #7259 (-21)
25.2M → Finish
7:38 | 7:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:07
Pace7:06 /mi
2nd Half
Distance13.11 mi
Time1:40:13
Pace7:39 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1122:007:0522:00
7:05
-
10K
6.21 mi11:08:5743:467:0321:46
7:00
-0:05
15K
9.32 mi11:31:061:05:557:0422:09
7:08
+0:08
20K
12.43 mi11:53:261:28:157:0622:20
7:11
+0:03
Half
13.11 mi11:58:181:33:077:064:52
7:08
-0:03
25K
15.53 mi12:15:581:50:477:0817:40
7:17
+0:09
30K
18.64 mi12:39:352:14:247:1323:37
7:36
+0:19
20M
20.00 mi12:50:062:24:557:1510:31
7:44
+0:08
21M
21.00 mi12:58:092:32:587:178:03
8:03
+0:19
35K
21.75 mi13:03:392:38:287:175:30
7:21
-0:42
23M
23.00 mi13:13:262:48:157:199:47
7:49
+0:28
24M
24.00 mi13:21:152:56:047:207:49
7:49
0:00
40K
24.85 mi13:27:593:02:487:216:44
7:53
+0:04
25.2M
25.20 mi13:30:533:05:427:222:54
8:25
+0:32
Finish
26.22 mi13:38:313:13:207:237:38
7:29
-0:56

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

7:00 /mi

Average Pace

7:23 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:07

48% of race

Time at Steady Pace

54:25

28% of race

Time at Slower Pace

45:48

24% of race

Average Pace: 7:22 /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 mi10:47:1122:007:0522:00
7:05
#6756
10K
6.21 mi11:08:5743:467:0321:46
7:00
#6755
15K
9.32 mi11:31:061:05:557:0422:09
7:08
#6921
20K
12.43 mi11:53:261:28:157:0622:20
7:11
#6947
Half
13.11 mi11:58:181:33:077:064:52
7:08
#6957
25K
15.53 mi12:15:581:50:477:0817:40
7:17
#6956
30K
18.64 mi12:39:352:14:247:1323:37
7:36
#7046
20M
20.00 mi12:50:062:24:557:1510:31
7:44
#7088
21M
21.00 mi12:58:092:32:587:178:03
8:03
#7075
35K
21.75 mi13:03:392:38:287:175:30
7:21
#7079
23M
23.00 mi13:13:262:48:157:199:47
7:49
#7103
24M
24.00 mi13:21:152:56:047:207:49
7:49
#7200
40K
24.85 mi13:27:593:02:487:216:44
7:53
#7234
25.2M
25.20 mi13:30:533:05:427:222:54
8:25
#7238
Finish
26.22 mi13:38:313:13:207:237:38
7:29
#7259
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6756609360937342(Top 28%)6487(Top 43%)6487(Top 123%)
10K6.21 mi3.10 mi6755+16079+146079+146855(Top 26%)6130(Top 40%)6130(Top 116%)
15K9.32 mi3.11 mi6921-1666197-1186197-1187342(Top 28%)6487(Top 43%)6487(Top 123%)
20K12.43 mi3.11 mi6947-266211-146211-147022(Top 26%)6228(Top 41%)6228(Top 118%)
Half13.11 mi0.68 mi6957-106217-66217-67353(Top 28%)6473(Top 43%)6473(Top 122%)
25K15.53 mi2.42 mi6956+16204+136204+137202(Top 27%)6290(Top 41%)6290(Top 119%)
30K18.64 mi3.11 mi7046-906249-456249-457941(Top 30%)6650(Top 44%)6650(Top 126%)
20M20.00 mi1.36 mi7088-426272-236272-238409(Top 32%)6834(Top 45%)6834(Top 129%)
21M21.00 mi1.00 mi7075+136247+256247+257642(Top 29%)6268(Top 41%)6268(Top 119%)
35K21.75 mi0.75 mi7079-46241+66241+67452(Top 28%)6156(Top 41%)6156(Top 116%)
23M23.00 mi1.25 mi7103-246223+186223+188483(Top 32%)6684(Top 44%)6684(Top 126%)
24M24.00 mi1.00 mi7200-976269-466269-469874(Top 37%)7320(Top 48%)7320(Top 139%)
40K24.85 mi0.85 mi7234-346273-46273-49132(Top 34%)6878(Top 45%)6878(Top 130%)
25.2M25.20 mi0.35 mi7238-46269+46269+48880(Top 33%)6653(Top 44%)6653(Top 126%)
Finish26.22 mi1.02 mi7259-216250+196250+198448(Top 32%)6424(Top 42%)6424(Top 122%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

7342

Males

6487

M18-39

6487

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

6855

Males

6130

M18-39

6130

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

7342

Males

6487

M18-39

6487

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7022

Males

6228

M18-39

6228

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7353

Males

6473

M18-39

6473

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7202

Males

6290

M18-39

6290

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

7941

Males

6650

M18-39

6650

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8409

Males

6834

M18-39

6834

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7642

Males

6268

M18-39

6268

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7452

Males

6156

M18-39

6156

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8483

Males

6684

M18-39

6684

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9874

Males

7320

M18-39

7320

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9132

Males

6878

M18-39

6878

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8880

Males

6653

M18-39

6653

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8448

Males

6424

M18-39

6424

Passing Analysis

Category:
Athletes Passed
915
Passed By
1418
Net Change
-503
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6756
5K → 10K199198+1#6756#6755
10K → 15K63229-166#6755#6921
15K → 20K92118-26#6921#6947
20K → Half1424-10#6947#6957
Half → 25K8584+1#6957#6956
25K → 30K82172-90#6956#7046
30K → 20M4183-42#7046#7088
20M → 21M7158+13#7088#7075
21M → 35K3438-4#7075#7079
35K → 23M83107-24#7079#7103
23M → 24M29126-97#7103#7200
24M → 40K3973-34#7200#7234
40K → 25.2M2731-4#7234#7238
25.2M → Finish5677-21#7238#7259
TOTALS9151418-503
📊

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