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BOSTON MARATHON 2023

Michael Ju

Bib: 1470•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 14%
Division (M18-39)
#0 / 5285
Top 31%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:34
Rank: #647
Start → 5K
18:34 | 5:59/mi
10K· 6.21 mi
37:04
Rank: #660 (-13)
5K → 10K
18:30 | 5:57/mi
15K· 9.32 mi
55:53
Rank: #711 (-51)
10K → 15K
18:49 | 6:03/mi
20K· 12.43 mi
1:15:06
Rank: #757 (-46)
15K → 20K
19:13 | 6:11/mi
Half· 13.11 mi
1:19:21
Rank: #790 (-33)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:34:45
Rank: #873 (-83)
Half → 25K
15:24 | 6:21/mi
30K· 18.64 mi
1:55:35
Rank: #1021 (-148)
25K → 30K
20:50 | 6:42/mi
20M
2:04:58
Rank: #1109 (-88)
30K → 20M
9:23 | 6:54/mi
21M
2:12:25
Rank: #1208 (-99)
20M → 21M
7:27 | 7:27/mi
35K· 21.75 mi
2:17:47
Rank: #1328 (-120)
21M → 35K
5:22 | 7:10/mi
23M
2:27:13
Rank: #1522 (-194)
35K → 23M
9:26 | 7:32/mi
24M
2:34:47
Rank: #1709 (-187)
23M → 24M
7:34 | 7:34/mi
40K· 24.85 mi
2:41:30
Rank: #1886 (-177)
24M → 40K
6:43 | 7:51/mi
25.2M
2:44:25
Rank: #1956 (-70)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
2:52:20
Rank: #2167 (-211)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:21
Pace6:03 /mi
2nd Half
Distance13.11 mi
Time1:32:59
Pace7:06 /mi
📊Positive Split: 17.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5018:345:5918:34
5:59
-
10K
6.21 mi10:37:2037:045:5818:30
5:57
-0:02
15K
9.32 mi10:56:0955:536:0018:49
6:03
+0:06
20K
12.43 mi11:15:221:15:066:0319:13
6:11
+0:08
Half
13.11 mi11:19:371:19:216:034:15
6:14
+0:03
25K
15.53 mi11:35:011:34:456:0615:24
6:21
+0:07
30K
18.64 mi11:55:511:55:356:1220:50
6:42
+0:21
20M
20.00 mi12:05:142:04:586:159:23
6:54
+0:12
21M
21.00 mi12:12:412:12:256:187:27
7:27
+0:33
35K
21.75 mi12:18:032:17:476:205:22
7:10
-0:17
23M
23.00 mi12:27:292:27:136:249:26
7:32
+0:22
24M
24.00 mi12:35:032:34:476:277:34
7:34
+0:02
40K
24.85 mi12:41:462:41:306:306:43
7:51
+0:17
25.2M
25.20 mi12:44:412:44:256:312:55
8:27
+0:36
Finish
26.22 mi12:52:362:52:206:357:55
7:46
-0:41

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

5:57 /mi

Average Pace

6:35 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:45

55% of race

Time at Steady Pace

35:35

21% of race

Time at Slower Pace

42:00

24% of race

Average Pace: 6:34 /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 mi10:18:5018:345:5918:34
5:59
#647
10K
6.21 mi10:37:2037:045:5818:30
5:57
#660
15K
9.32 mi10:56:0955:536:0018:49
6:03
#711
20K
12.43 mi11:15:221:15:066:0319:13
6:11
#757
Half
13.11 mi11:19:371:19:216:034:15
6:14
#790
25K
15.53 mi11:35:011:34:456:0615:24
6:21
#873
30K
18.64 mi11:55:511:55:356:1220:50
6:42
#1021
20M
20.00 mi12:05:142:04:586:159:23
6:54
#1109
21M
21.00 mi12:12:412:12:256:187:27
7:27
#1208
35K
21.75 mi12:18:032:17:476:205:22
7:10
#1328
23M
23.00 mi12:27:292:27:136:249:26
7:32
#1522
24M
24.00 mi12:35:032:34:476:277:34
7:34
#1709
40K
24.85 mi12:41:462:41:306:306:43
7:51
#1886
25.2M
25.20 mi12:44:412:44:256:312:55
8:27
#1956
Finish
26.22 mi12:52:362:52:206:357:55
7:46
#2167
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi647603603840(Top 3%)794(Top 5%)794(Top 15%)
10K6.21 mi3.10 mi660-13616-13616-13712(Top 3%)668(Top 4%)668(Top 13%)
15K9.32 mi3.11 mi711-51667-51667-51840(Top 3%)794(Top 5%)794(Top 15%)
20K12.43 mi3.11 mi757-46713-46713-461020(Top 4%)970(Top 6%)970(Top 18%)
Half13.11 mi0.68 mi790-33745-32745-321525(Top 6%)1461(Top 10%)1461(Top 28%)
25K15.53 mi2.42 mi873-83826-81826-811536(Top 6%)1472(Top 10%)1472(Top 28%)
30K18.64 mi3.11 mi1021-148971-145971-1452416(Top 9%)2300(Top 15%)2300(Top 44%)
20M20.00 mi1.36 mi1109-881057-861057-863416(Top 13%)3188(Top 21%)3188(Top 60%)
21M21.00 mi1.00 mi1208-991154-971154-974325(Top 16%)3951(Top 26%)3951(Top 75%)
35K21.75 mi0.75 mi1328-1201268-1141268-1146293(Top 24%)5421(Top 36%)5421(Top 103%)
23M23.00 mi1.25 mi1522-1941453-1851453-1856578(Top 25%)5545(Top 37%)5545(Top 105%)
24M24.00 mi1.00 mi1709-1871634-1811634-1818106(Top 30%)6362(Top 42%)6362(Top 120%)
40K24.85 mi0.85 mi1886-1771804-1701804-1708966(Top 34%)6776(Top 45%)6776(Top 128%)
25.2M25.20 mi0.35 mi1956-701872-681872-689110(Top 34%)6770(Top 45%)6770(Top 128%)
Finish26.22 mi1.02 mi2167-2112078-2062078-20610391(Top 39%)7475(Top 49%)7475(Top 141%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

840

Males

794

M18-39

794

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

712

Males

668

M18-39

668

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

840

Males

794

M18-39

794

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1020

Males

970

M18-39

970

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1525

Males

1461

M18-39

1461

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1536

Males

1472

M18-39

1472

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2416

Males

2300

M18-39

2300

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3416

Males

3188

M18-39

3188

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4325

Males

3951

M18-39

3951

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6293

Males

5421

M18-39

5421

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6578

Males

5545

M18-39

5545

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8106

Males

6362

M18-39

6362

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

8966

Males

6776

M18-39

6776

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9110

Males

6770

M18-39

6770

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10391

Males

7475

M18-39

7475

Passing Analysis

Category:
Athletes Passed
78
Passed By
1598
Net Change
-1520
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#647
5K → 10K2639-13#647#660
10K → 15K758-51#660#711
15K → 20K955-46#711#757
20K → Half033-33#757#790
Half → 25K1093-83#790#873
25K → 30K6154-148#873#1021
30K → 20M391-88#1021#1109
20M → 21M8107-99#1109#1208
21M → 35K3123-120#1208#1328
35K → 23M0194-194#1328#1522
23M → 24M1188-187#1522#1709
24M → 40K2179-177#1709#1886
40K → 25.2M171-70#1886#1956
25.2M → Finish2213-211#1956#2167
TOTALS781598-1520
📊

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