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BOSTON MARATHON 2023

Nick Chu

Bib: 867•M

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 8%
Division (M18-39)
#0 / 5285
Top 20%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:54
Rank: #350
Start → 5K
17:54 | 5:46/mi
10K· 6.21 mi
35:58
Rank: #396 (-46)
5K → 10K
18:04 | 5:49/mi
15K· 9.32 mi
54:40
Rank: #476 (-80)
10K → 15K
18:42 | 6:01/mi
20K· 12.43 mi
1:14:03
Rank: #596 (-120)
15K → 20K
19:23 | 6:14/mi
Half· 13.11 mi
1:18:06
Rank: #591 (+5)
20K → Half
4:03 | 5:56/mi
25K· 15.53 mi
1:33:04
Rank: #625 (-34)
Half → 25K
14:58 | 6:10/mi
30K· 18.64 mi
1:55:50
Rank: #1069 (-444)
25K → 30K
22:46 | 7:20/mi
20M
2:04:44
Rank: #1081 (-12)
30K → 20M
8:54 | 6:33/mi
21M
2:11:40
Rank: #1094 (-13)
20M → 21M
6:56 | 6:56/mi
35K· 21.75 mi
2:16:29
Rank: #1107 (-13)
21M → 35K
4:49 | 6:26/mi
23M
2:24:55
Rank: #1155 (-48)
35K → 23M
8:26 | 6:44/mi
24M
2:31:43
Rank: #1210 (-55)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:37:38
Rank: #1266 (-56)
24M → 40K
5:55 | 6:55/mi
25.2M
2:40:12
Rank: #1285 (-19)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:46:57
Rank: #1319 (-34)
25.2M → Finish
6:45 | 6:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:06
Pace5:57 /mi
2nd Half
Distance13.11 mi
Time1:28:51
Pace6:47 /mi
📊Positive Split: 13.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:0817:545:4617:54
5:46
-
10K
6.21 mi10:36:1235:585:4718:04
5:49
+0:03
15K
9.32 mi10:54:5454:405:5218:42
6:01
+0:12
20K
12.43 mi11:14:171:14:035:5819:23
6:14
+0:13
Half
13.11 mi11:18:201:18:065:574:03
5:56
-0:18
25K
15.53 mi11:33:181:33:045:5914:58
6:10
+0:14
30K
18.64 mi11:56:041:55:506:1322:46
7:20
+1:10
20M
20.00 mi12:04:582:04:446:148:54
6:33
-0:47
21M
21.00 mi12:11:542:11:406:166:56
6:56
+0:23
35K
21.75 mi12:16:432:16:296:174:49
6:26
-0:30
23M
23.00 mi12:25:092:24:556:188:26
6:44
+0:18
24M
24.00 mi12:31:572:31:436:196:48
6:48
+0:04
40K
24.85 mi12:37:522:37:386:215:55
6:55
+0:07
25.2M
25.20 mi12:40:262:40:126:212:34
7:27
+0:32
Finish
26.22 mi12:47:112:46:576:226:45
6:37
-0:50

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

5:46 /mi

Average Pace

6:22 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:04

56% of race

Time at Steady Pace

35:42

21% of race

Time at Slower Pace

38:11

23% of race

Average Pace: 6:22 /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 mi10:18:0817:545:4617:54
5:46
#350
10K
6.21 mi10:36:1235:585:4718:04
5:49
#396
15K
9.32 mi10:54:5454:405:5218:42
6:01
#476
20K
12.43 mi11:14:171:14:035:5819:23
6:14
#596
Half
13.11 mi11:18:201:18:065:574:03
5:56
#591
25K
15.53 mi11:33:181:33:045:5914:58
6:10
#625
30K
18.64 mi11:56:041:55:506:1322:46
7:20
#1069
20M
20.00 mi12:04:582:04:446:148:54
6:33
#1081
21M
21.00 mi12:11:542:11:406:166:56
6:56
#1094
35K
21.75 mi12:16:432:16:296:174:49
6:26
#1107
23M
23.00 mi12:25:092:24:556:188:26
6:44
#1155
24M
24.00 mi12:31:572:31:436:196:48
6:48
#1210
40K
24.85 mi12:37:522:37:386:215:55
6:55
#1266
25.2M
25.20 mi12:40:262:40:126:212:34
7:27
#1285
Finish
26.22 mi12:47:112:46:576:226:45
6:37
#1319
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi350316316757(Top 3%)712(Top 5%)712(Top 13%)
10K6.21 mi3.10 mi396-46361-45361-45452(Top 2%)417(Top 3%)417(Top 8%)
15K9.32 mi3.11 mi476-80440-79440-79757(Top 3%)712(Top 5%)712(Top 13%)
20K12.43 mi3.11 mi596-120553-113553-1131180(Top 4%)1127(Top 7%)1127(Top 21%)
Half13.11 mi0.68 mi591+5548+5548+5644(Top 2%)605(Top 4%)605(Top 11%)
25K15.53 mi2.42 mi625-34584-36584-36931(Top 3%)883(Top 6%)883(Top 17%)
30K18.64 mi3.11 mi1069-4441018-4341018-4346205(Top 23%)5513(Top 36%)5513(Top 104%)
20M20.00 mi1.36 mi1081-121029-111029-111667(Top 6%)1590(Top 10%)1590(Top 30%)
21M21.00 mi1.00 mi1094-131041-121041-121905(Top 7%)1806(Top 12%)1806(Top 34%)
35K21.75 mi0.75 mi1107-131054-131054-132179(Top 8%)2066(Top 14%)2066(Top 39%)
23M23.00 mi1.25 mi1155-481102-481102-482350(Top 9%)2207(Top 15%)2207(Top 42%)
24M24.00 mi1.00 mi1210-551154-521154-523695(Top 14%)3381(Top 22%)3381(Top 64%)
40K24.85 mi0.85 mi1266-561208-541208-543485(Top 13%)3164(Top 21%)3164(Top 60%)
25.2M25.20 mi0.35 mi1285-191224-161224-163728(Top 14%)3320(Top 22%)3320(Top 63%)
Finish26.22 mi1.02 mi1319-341255-311255-313154(Top 12%)2831(Top 19%)2831(Top 54%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

757

Males

712

M18-39

712

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

452

Males

417

M18-39

417

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

757

Males

712

M18-39

712

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1180

Males

1127

M18-39

1127

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

644

Males

605

M18-39

605

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

931

Males

883

M18-39

883

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6205

Males

5513

M18-39

5513

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1667

Males

1590

M18-39

1590

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1905

Males

1806

M18-39

1806

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2179

Males

2066

M18-39

2066

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2350

Males

2207

M18-39

2207

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3695

Males

3381

M18-39

3381

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3485

Males

3164

M18-39

3164

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3728

Males

3320

M18-39

3320

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3154

Males

2831

M18-39

2831

Passing Analysis

Category:
Athletes Passed
107
Passed By
1076
Net Change
-969
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#350
5K → 10K248-46#350#396
10K → 15K282-80#396#476
15K → 20K4124-120#476#596
20K → Half83+5#596#591
Half → 25K1246-34#591#625
25K → 30K0444-444#625#1069
30K → 20M1527-12#1069#1081
20M → 21M1831-13#1081#1094
21M → 35K821-13#1094#1107
35K → 23M1058-48#1107#1155
23M → 24M661-55#1155#1210
24M → 40K561-56#1210#1266
40K → 25.2M322-19#1266#1285
25.2M → Finish1448-34#1285#1319
TOTALS1071076-969
📊

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