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BOSTON MARATHON 2023

Yen-Bob Chen

Bib: 4660•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 29%
Gender (Male)
#0 / 15176
Top 43%
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
21:22
Rank: #5389
Start → 5K
21:22 | 6:53/mi
10K· 6.21 mi
42:36
Rank: #5469 (-80)
5K → 10K
21:14 | 6:50/mi
15K· 9.32 mi
1:04:21
Rank: #5872 (-403)
10K → 15K
21:45 | 7:00/mi
20K· 12.43 mi
1:27:15
Rank: #6473 (-601)
15K → 20K
22:54 | 7:22/mi
Half· 13.11 mi
1:32:09
Rank: #6521 (-48)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:50:25
Rank: #6810 (-289)
Half → 25K
18:16 | 7:32/mi
30K· 18.64 mi
2:15:15
Rank: #7333 (-523)
25K → 30K
24:50 | 8:00/mi
20M
2:26:42
Rank: #7693 (-360)
30K → 20M
11:27 | 8:26/mi
21M
2:35:16
Rank: #7816 (-123)
20M → 21M
8:34 | 8:34/mi
35K· 21.75 mi
2:40:45
Rank: #7787 (+29)
21M → 35K
5:29 | 7:20/mi
23M
2:50:40
Rank: #7843 (-56)
35K → 23M
9:55 | 7:55/mi
24M
2:58:02
Rank: #7767 (+76)
23M → 24M
7:22 | 7:22/mi
40K· 24.85 mi
3:04:30
Rank: #7734 (+33)
24M → 40K
6:28 | 7:34/mi
25.2M
3:07:21
Rank: #7719 (+15)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:14:50
Rank: #7691 (+28)
25.2M → Finish
7:29 | 7:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:09
Pace7:02 /mi
2nd Half
Distance13.11 mi
Time1:42:41
Pace7:50 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2921:226:5321:22
6:53
-
10K
6.21 mi10:44:4342:366:5121:14
6:50
-0:03
15K
9.32 mi11:06:281:04:216:5421:45
7:00
+0:10
20K
12.43 mi11:29:221:27:157:0122:54
7:22
+0:22
Half
13.11 mi11:34:161:32:097:024:54
7:11
-0:11
25K
15.53 mi11:52:321:50:257:0618:16
7:32
+0:21
30K
18.64 mi12:17:222:15:157:1524:50
8:00
+0:28
20M
20.00 mi12:28:492:26:427:2011:27
8:26
+0:26
21M
21.00 mi12:37:232:35:167:248:34
8:34
+0:08
35K
21.75 mi12:42:522:40:457:235:29
7:20
-1:14
23M
23.00 mi12:52:472:50:407:259:55
7:55
+0:35
24M
24.00 mi13:00:092:58:027:257:22
7:22
-0:33
40K
24.85 mi13:06:373:04:307:256:28
7:34
+0:12
25.2M
25.20 mi13:09:283:07:217:262:51
8:16
+0:42
Finish
26.22 mi13:16:573:14:507:267:29
7:21
-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

6:50 /mi

Average Pace

7:26 /mi

Slowest Pace

8:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:04:21

33% of race

Time at Steady Pace

1:12:52

37% of race

Time at Slower Pace

57:37

30% of race

Average Pace: 7:26 /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 mi10:23:2921:226:5321:22
6:53
#5389
10K
6.21 mi10:44:4342:366:5121:14
6:50
#5469
15K
9.32 mi11:06:281:04:216:5421:45
7:00
#5872
20K
12.43 mi11:29:221:27:157:0122:54
7:22
#6473
Half
13.11 mi11:34:161:32:097:024:54
7:11
#6521
25K
15.53 mi11:52:321:50:257:0618:16
7:32
#6810
30K
18.64 mi12:17:222:15:157:1524:50
8:00
#7333
20M
20.00 mi12:28:492:26:427:2011:27
8:26
#7693
21M
21.00 mi12:37:232:35:167:248:34
8:34
#7816
35K
21.75 mi12:42:522:40:457:235:29
7:20
#7787
23M
23.00 mi12:52:472:50:407:259:55
7:55
#7843
24M
24.00 mi13:00:092:58:027:257:22
7:22
#7767
40K
24.85 mi13:06:373:04:307:256:28
7:34
#7734
25.2M
25.20 mi13:09:283:07:217:262:51
8:16
#7719
Finish
26.22 mi13:16:573:14:507:267:29
7:21
#7691
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5389498049806562(Top 25%)5907(Top 39%)5907(Top 112%)
10K6.21 mi3.10 mi5469-805049-695049-695622(Top 21%)5164(Top 34%)5164(Top 98%)
15K9.32 mi3.11 mi5872-4035379-3305379-3306562(Top 25%)5907(Top 39%)5907(Top 112%)
20K12.43 mi3.11 mi6473-6015843-4645843-4648284(Top 31%)7062(Top 47%)7062(Top 134%)
Half13.11 mi0.68 mi6521-485879-365879-367702(Top 29%)6709(Top 44%)6709(Top 127%)
25K15.53 mi2.42 mi6810-2896093-2146093-2149003(Top 34%)7432(Top 49%)7432(Top 141%)
30K18.64 mi3.11 mi7333-5236451-3586451-35810822(Top 41%)8248(Top 54%)8248(Top 156%)
20M20.00 mi1.36 mi7693-3606665-2146665-21413135(Top 49%)9180(Top 60%)9180(Top 174%)
21M21.00 mi1.00 mi7816-1236728-636728-6310821(Top 41%)8018(Top 53%)8018(Top 152%)
35K21.75 mi0.75 mi7787+296704+246704+247309(Top 27%)6082(Top 40%)6082(Top 115%)
23M23.00 mi1.25 mi7843-566705-16705-19179(Top 34%)7047(Top 46%)7047(Top 133%)
24M24.00 mi1.00 mi7767+766634+716634+716824(Top 26%)5613(Top 37%)5613(Top 106%)
40K24.85 mi0.85 mi7734+336601+336601+337086(Top 27%)5679(Top 37%)5679(Top 107%)
25.2M25.20 mi0.35 mi7719+156581+206581+208002(Top 30%)6162(Top 41%)6162(Top 117%)
Finish26.22 mi1.02 mi7691+286544+376544+377387(Top 28%)5797(Top 38%)5797(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6562

Males

5907

M18-39

5907

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5622

Males

5164

M18-39

5164

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6562

Males

5907

M18-39

5907

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8284

Males

7062

M18-39

7062

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7702

Males

6709

M18-39

6709

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9003

Males

7432

M18-39

7432

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

10822

Males

8248

M18-39

8248

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

13135

Males

9180

M18-39

9180

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10821

Males

8018

M18-39

8018

21M→35K

21.0 - 21.8 mi

Top 27%
×7stories
+17ft-86ft

Overall

7309

Males

6082

M18-39

6082

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9179

Males

7047

M18-39

7047

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

6824

Males

5613

M18-39

5613

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7086

Males

5679

M18-39

5679

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8002

Males

6162

M18-39

6162

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7387

Males

5797

M18-39

5797

Passing Analysis

Category:
Athletes Passed
715
Passed By
3017
Net Change
-2302
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5389
5K → 10K168248-80#5389#5469
10K → 15K25428-403#5469#5872
15K → 20K14615-601#5872#6473
20K → Half957-48#6473#6521
Half → 25K25314-289#6521#6810
25K → 30K20543-523#6810#7333
30K → 20M18378-360#7333#7693
20M → 21M31154-123#7693#7816
21M → 35K5526+29#7816#7787
35K → 23M59115-56#7787#7843
23M → 24M10428+76#7843#7767
24M → 40K7441+33#7767#7734
40K → 25.2M3520+15#7734#7719
25.2M → Finish7850+28#7719#7691
TOTALS7153017-2302
📊

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