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BOSTON MARATHON 2023

John Lee

Bib: 13945•M

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 45%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 49%
Division (M50-54)
#0 / 2052
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
7:41/mi
23:52
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
48:10
↑ 79↓ 1380.4%
15K· 9.32 mi
7:53/mi
1:12:40
↑ 67↓ 78
20K· 12.43 mi
8:11/mi
1:38:06
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:43:31
↑ 19↓ 370.5%
25K· 15.53 mi
8:00/mi
2:02:56
↑ 66↓ 880.2%
30K· 18.64 mi
8:09/mi
2:28:15
↑ 181↓ 1480.2%
20M
8:06/mi
2:39:16
↑ 64↓ 500.2%
21M
8:30/mi
2:47:46
↑ 106↓ 241.6%
35K· 21.75 mi
8:03/mi
2:53:47
↑ 17↓ 861.7%
23M
7:59/mi
3:03:47
↑ 23↓ 630.6%
24M
7:51/mi
3:11:38
↓ 821.3%
40K· 24.85 mi
7:53/mi
3:18:22
↓ 200.3%
25.2M
8:19/mi
3:21:14
↑ 13↓ 160.2%
Finish· 26.22 mi
7:27/mi
3:28:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:31
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:45:19
Pace8:02 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5223:527:4123:52
7:41
-
10K
6.21 mi11:16:1048:107:4524:18
7:49
+0:08
15K
9.32 mi11:40:401:12:407:4824:30
7:53
+0:04
20K
12.43 mi12:06:061:38:067:5425:26
8:11
+0:18
Half
13.11 mi12:11:311:43:317:545:25
7:56
-0:15
25K
15.53 mi12:30:562:02:567:5519:25
8:00
+0:04
30K
18.64 mi12:56:152:28:157:5725:19
8:09
+0:09
20M
20.00 mi13:07:162:39:167:5811:01
8:06
-0:03
21M
21.00 mi13:15:462:47:467:598:30
8:30
+0:24
35K
21.75 mi13:21:472:53:477:596:01
8:03
-0:27
23M
23.00 mi13:31:473:03:477:5910:00
7:59
-0:04
24M
24.00 mi13:39:383:11:387:597:51
7:51
-0:08
40K
24.85 mi13:46:223:18:227:596:44
7:53
+0:02
25.2M
25.20 mi13:49:143:21:147:592:52
8:19
+0:26
Finish
26.22 mi13:56:503:28:507:587:36
7:27
-0:52

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

7:27 /mi

Average Pace

7:58 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:28

95% of race

Time at Steady Pace

11:22

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:58 /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 mi10:51:5223:527:4123:52
7:41
#11285
10K
6.21 mi11:16:1048:107:4524:18
7:49
#12276
15K
9.32 mi11:40:401:12:407:4824:30
7:53
#12642
20K
12.43 mi12:06:061:38:067:5425:26
8:11
#13263
Half
13.11 mi12:11:311:43:317:545:25
7:56
#13285
25K
15.53 mi12:30:562:02:567:5519:25
8:00
#13170
30K
18.64 mi12:56:152:28:157:5725:19
8:09
#12923
20M
20.00 mi13:07:162:39:167:5811:01
8:06
#12731
21M
21.00 mi13:15:462:47:467:598:30
8:30
#12568
35K
21.75 mi13:21:472:53:477:596:01
8:03
#12552
23M
23.00 mi13:31:473:03:477:5910:00
7:59
#12370
24M
24.00 mi13:39:383:11:387:597:51
7:51
#12265
40K
24.85 mi13:46:223:18:227:596:44
7:53
#12127
25.2M
25.20 mi13:49:143:21:147:592:52
8:19
#12060
Finish
26.22 mi13:56:503:28:507:587:36
7:27
#11902
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi112858792879213392(Top 50%)9652(Top 64%)9652(Top 470%)
10K6.21 mi3.10 mi12276-9919237-4459237-44513302(Top 50%)9671(Top 64%)9671(Top 471%)
15K9.32 mi3.11 mi12642-3669369-1329369-13213392(Top 50%)9652(Top 64%)9652(Top 470%)
20K12.43 mi3.11 mi13263-6219607-2389607-23814865(Top 56%)10217(Top 67%)10217(Top 498%)
Half13.11 mi0.68 mi13285-229612-59612-513812(Top 52%)9806(Top 65%)9806(Top 478%)
25K15.53 mi2.42 mi13170+1159559+539559+5312800(Top 48%)9259(Top 61%)9259(Top 451%)
30K18.64 mi3.11 mi12923+2479404+1559404+15511982(Top 45%)8793(Top 58%)8793(Top 429%)
20M20.00 mi1.36 mi12731+1929297+1079297+10711065(Top 42%)8286(Top 55%)8286(Top 404%)
21M21.00 mi1.00 mi12568+1639214+839214+8310488(Top 39%)7857(Top 52%)7857(Top 383%)
35K21.75 mi0.75 mi12552+169195+199195+1912389(Top 47%)8723(Top 57%)8723(Top 425%)
23M23.00 mi1.25 mi12370+1829091+1049091+1049649(Top 36%)7322(Top 48%)7322(Top 357%)
24M24.00 mi1.00 mi12265+1059023+689023+6810150(Top 38%)7484(Top 49%)7484(Top 365%)
40K24.85 mi0.85 mi12127+1388937+868937+869166(Top 34%)6912(Top 46%)6912(Top 337%)
25.2M25.20 mi0.35 mi12060+678903+348903+348396(Top 32%)6428(Top 42%)6428(Top 313%)
Finish26.22 mi1.02 mi11902+1588818+858818+858240(Top 31%)6313(Top 42%)6313(Top 308%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

13392

Males

9652

M50-54

9652

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13302

Males

9671

M50-54

9671

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

13392

Males

9652

M50-54

9652

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

14865

Males

10217

M50-54

10217

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13812

Males

9806

M50-54

9806

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12800

Males

9259

M50-54

9259

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

11982

Males

8793

M50-54

8793

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11065

Males

8286

M50-54

8286

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

10488

Males

7857

M50-54

7857

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

12389

Males

8723

M50-54

8723

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9649

Males

7322

M50-54

7322

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10150

Males

7484

M50-54

7484

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9166

Males

6912

M50-54

6912

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8396

Males

6428

M50-54

6428

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8240

Males

6313

M50-54

6313

Passing Analysis

Category:
Athletes Passed
1914
Passed By
2531
Net Change
-617
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11285
5K → 10K571048-991#11285#12276
10K → 15K93459-366#12276#12642
15K → 20K51672-621#12642#13263
20K → Half2345-22#13263#13285
Half → 25K19984+115#13285#13170
25K → 30K32780+247#13170#12923
30K → 20M21422+192#12923#12731
20M → 21M18724+163#12731#12568
21M → 35K6044+16#12568#12552
35K → 23M19917+182#12552#12370
23M → 24M12116+105#12370#12265
24M → 40K1424+138#12265#12127
40K → 25.2M703+67#12127#12060
25.2M → Finish17113+158#12060#11902
TOTALS19142531-617
📊

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