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BOSTON MARATHON 2023

James Lee

Bib: 4000•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 25%
Division (M18-39)
#0 / 5285
Top 49%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:53/mi
21:24
↑ 97↓ 3451.5%
10K· 6.21 mi
6:43/mi
42:16
↑ 79↓ 1380.4%
15K· 9.32 mi
6:43/mi
1:03:08
↑ 67↓ 78
20K· 12.43 mi
6:47/mi
1:24:12
↑ 106↓ 860.1%
Half· 13.11 mi
6:42/mi
1:28:46
↑ 19↓ 370.5%
25K· 15.53 mi
6:52/mi
1:45:24
↑ 66↓ 880.2%
30K· 18.64 mi
7:06/mi
2:07:28
↑ 181↓ 1480.2%
20M
7:03/mi
2:17:03
↑ 64↓ 500.2%
21M
7:18/mi
2:24:21
↑ 106↓ 241.6%
35K· 21.75 mi
6:40/mi
2:29:20
↑ 17↓ 861.7%
23M
6:51/mi
2:37:55
↑ 23↓ 630.6%
24M
6:40/mi
2:44:35
↓ 821.3%
40K· 24.85 mi
6:52/mi
2:50:27
↓ 200.3%
25.2M
7:09/mi
2:52:55
↑ 13↓ 160.2%
Finish· 26.22 mi
6:25/mi
2:59:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:46
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:30:41
Pace6:55 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5221:246:5321:24
6:53
-
10K
6.21 mi10:44:4442:166:4820:52
6:43
-0:10
15K
9.32 mi11:05:361:03:086:4620:52
6:43
0:00
20K
12.43 mi11:26:401:24:126:4721:04
6:47
+0:04
Half
13.11 mi11:31:141:28:466:464:34
6:42
-0:05
25K
15.53 mi11:47:521:45:246:4716:38
6:52
+0:10
30K
18.64 mi12:09:562:07:286:5022:04
7:06
+0:14
20M
20.00 mi12:19:312:17:036:519:35
7:03
-0:03
21M
21.00 mi12:26:492:24:216:527:18
7:18
+0:15
35K
21.75 mi12:31:482:29:206:524:59
6:40
-0:38
23M
23.00 mi12:40:232:37:556:528:35
6:51
+0:11
24M
24.00 mi12:47:032:44:356:516:40
6:40
-0:11
40K
24.85 mi12:52:552:50:276:515:52
6:52
+0:12
25.2M
25.20 mi12:55:232:52:556:522:28
7:09
+0:17
Finish
26.22 mi13:01:552:59:276:516:32
6:25
-0:44

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

6:25 /mi

Average Pace

6:51 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:37

82% of race

Time at Steady Pace

31:50

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:51 /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 mi10:23:5221:246:5321:24
6:53
#5490
10K
6.21 mi10:44:4442:166:4820:52
6:43
#4994
15K
9.32 mi11:05:361:03:086:4620:52
6:43
#4743
20K
12.43 mi11:26:401:24:126:4721:04
6:47
#4607
Half
13.11 mi11:31:141:28:466:464:34
6:42
#4578
25K
15.53 mi11:47:521:45:246:4716:38
6:52
#4550
30K
18.64 mi12:09:562:07:286:5022:04
7:06
#4656
20M
20.00 mi12:19:312:17:036:519:35
7:03
#4606
21M
21.00 mi12:26:492:24:216:527:18
7:18
#4536
35K
21.75 mi12:31:482:29:206:524:59
6:40
#4463
23M
23.00 mi12:40:232:37:556:528:35
6:51
#4318
24M
24.00 mi12:47:032:44:356:516:40
6:40
#4261
40K
24.85 mi12:52:552:50:276:515:52
6:52
#4180
25.2M
25.20 mi12:55:232:52:556:522:28
7:09
#4142
Finish
26.22 mi13:01:552:59:276:516:32
6:25
#4016
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5490506350634310(Top 16%)4035(Top 27%)4035(Top 76%)
10K6.21 mi3.10 mi4994+4964631+4324631+4324532(Top 17%)4229(Top 28%)4229(Top 80%)
15K9.32 mi3.11 mi4743+2514415+2164415+2164310(Top 16%)4035(Top 27%)4035(Top 76%)
20K12.43 mi3.11 mi4607+1364297+1184297+1184285(Top 16%)4002(Top 26%)4002(Top 76%)
Half13.11 mi0.68 mi4578+294270+274270+274398(Top 17%)4090(Top 27%)4090(Top 77%)
25K15.53 mi2.42 mi4550+284248+224248+224691(Top 18%)4354(Top 29%)4354(Top 82%)
30K18.64 mi3.11 mi4656-1064342-944342-944959(Top 19%)4558(Top 30%)4558(Top 86%)
20M20.00 mi1.36 mi4606+504294+484294+484374(Top 16%)4023(Top 27%)4023(Top 76%)
21M21.00 mi1.00 mi4536+704231+634231+633644(Top 14%)3376(Top 22%)3376(Top 64%)
35K21.75 mi0.75 mi4463+734161+704161+703406(Top 13%)3158(Top 21%)3158(Top 60%)
23M23.00 mi1.25 mi4318+1454039+1224039+1223008(Top 11%)2803(Top 18%)2803(Top 53%)
24M24.00 mi1.00 mi4261+573986+533986+532973(Top 11%)2757(Top 18%)2757(Top 52%)
40K24.85 mi0.85 mi4180+813910+763910+763169(Top 12%)2900(Top 19%)2900(Top 55%)
25.2M25.20 mi0.35 mi4142+383877+333877+332419(Top 9%)2234(Top 15%)2234(Top 42%)
Finish26.22 mi1.02 mi4016+1263758+1193758+1192096(Top 8%)1941(Top 13%)1941(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21story building
+97ft-345ft

Overall

4310

Males

4035

M18-39

4035

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4532

Males

4229

M18-39

4229

10K→15K

6.2 - 9.3 mi

Top 16%
×3story building
+67ft-78ft

Overall

4310

Males

4035

M18-39

4035

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4285

Males

4002

M18-39

4002

20K→Half

12.4 - 13.1 mi

Top 17%
×2story building
+19ft-37ft

Overall

4398

Males

4090

M18-39

4090

Half→25K

13.1 - 15.5 mi

Top 18%
×4story building
+66ft-88ft

Overall

4691

Males

4354

M18-39

4354

25K→30K

15.5 - 18.6 mi

Top 19%
×9story building
+181ft-148ft

Overall

4959

Males

4558

M18-39

4558

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4374

Males

4023

M18-39

4023

20M→21M

20.0 - 21.0 mi

Top 14%
×8story building
+106ft-24ft

Overall

3644

Males

3376

M18-39

3376

21M→35K

21.0 - 21.8 mi

Top 13%
×7story building
+17ft-86ft

Overall

3406

Males

3158

M18-39

3158

35K→23M

21.8 - 23.0 mi

Top 11%
×5story building
+23ft-63ft

Overall

3008

Males

2803

M18-39

2803

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

2973

Males

2757

M18-39

2757

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3169

Males

2900

M18-39

2900

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2419

Males

2234

M18-39

2234

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2story building
+22ft-21ft

Overall

2096

Males

1941

M18-39

1941

Passing Analysis

Category:
Athletes Passed
2005
Passed By
531
Net Change
+1474
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5490
5K → 10K54549+496#5490#4994
10K → 15K27928+251#4994#4743
15K → 20K17236+136#4743#4607
20K → Half356+29#4607#4578
Half → 25K10072+28#4578#4550
25K → 30K97203-106#4550#4656
30K → 20M9242+50#4656#4606
20M → 21M9828+70#4606#4536
21M → 35K8512+73#4536#4463
35K → 23M16015+145#4463#4318
23M → 24M7518+57#4318#4261
24M → 40K9716+81#4261#4180
40K → 25.2M402+38#4180#4142
25.2M → Finish1304+126#4142#4016
TOTALS2005531+1474
📊

Passing Visuals

Category:
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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