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BOSTON MARATHON 2023

Brian Lee

Bib: 5046•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 28%
Masters (Masters Men)
#0 / 9891
Top 14%
Division (M50-54)
#0 / 2052
Top 9%
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
7:01/mi
21:48
↑ 97↓ 3451.5%
10K· 6.21 mi
6:54/mi
43:13
↑ 79↓ 1380.4%
15K· 9.32 mi
6:57/mi
1:04:50
↑ 67↓ 78
20K· 12.43 mi
7:00/mi
1:26:34
↑ 106↓ 860.1%
Half· 13.11 mi
6:40/mi
1:31:07
↑ 19↓ 370.5%
25K· 15.53 mi
6:51/mi
1:47:44
↑ 66↓ 880.2%
30K· 18.64 mi
6:52/mi
2:09:04
↑ 181↓ 1480.2%
20M
6:56/mi
2:18:29
↑ 64↓ 500.2%
21M
7:22/mi
2:25:51
↑ 106↓ 241.6%
35K· 21.75 mi
6:40/mi
2:30:50
↑ 17↓ 861.7%
23M
6:53/mi
2:39:27
↑ 23↓ 630.6%
24M
6:45/mi
2:46:12
↓ 821.3%
40K· 24.85 mi
7:01/mi
2:52:12
↓ 200.3%
25.2M
7:18/mi
2:54:43
↑ 13↓ 160.2%
Finish· 26.22 mi
6:37/mi
3:01:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:31:07
Pace6:57 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:30:21
Pace6:54 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0921:487:0121:48
7:01
-
10K
6.21 mi10:45:3443:136:5721:25
6:54
-0:07
15K
9.32 mi11:07:111:04:506:5721:37
6:57
+0:03
20K
12.43 mi11:28:551:26:346:5821:44
7:00
+0:03
Half
13.11 mi11:33:281:31:076:574:33
6:40
-0:20
25K
15.53 mi11:50:051:47:446:5616:37
6:51
+0:11
30K
18.64 mi12:11:252:09:046:5521:20
6:52
+0:01
20M
20.00 mi12:20:502:18:296:559:25
6:56
+0:04
21M
21.00 mi12:28:122:25:516:577:22
7:22
+0:26
35K
21.75 mi12:33:112:30:506:564:59
6:40
-0:42
23M
23.00 mi12:41:482:39:276:568:37
6:53
+0:13
24M
24.00 mi12:48:332:46:126:566:45
6:45
-0:08
40K
24.85 mi12:54:332:52:126:566:00
7:01
+0:16
25.2M
25.20 mi12:57:042:54:436:562:31
7:18
+0:17
Finish
26.22 mi13:03:493:01:286:566:45
6:37
-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

6:37 /mi

Average Pace

6:56 /mi

Slowest Pace

7:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:35

95% of race

Time at Steady Pace

9:53

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:55 /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 mi10:24:0921:487:0121:48
7:01
#6331
10K
6.21 mi10:45:3443:136:5721:25
6:54
#6228
15K
9.32 mi11:07:111:04:506:5721:37
6:57
#6223
20K
12.43 mi11:28:551:26:346:5821:44
7:00
#6132
Half
13.11 mi11:33:281:31:076:574:33
6:40
#6056
25K
15.53 mi11:50:051:47:446:5616:37
6:51
#5801
30K
18.64 mi12:11:252:09:046:5521:20
6:52
#5350
20M
20.00 mi12:20:502:18:296:559:25
6:56
#5180
21M
21.00 mi12:28:122:25:516:577:22
7:22
#5060
35K
21.75 mi12:33:112:30:506:564:59
6:40
#4973
23M
23.00 mi12:41:482:39:276:568:37
6:53
#4798
24M
24.00 mi12:48:332:46:126:566:45
6:45
#4706
40K
24.85 mi12:54:332:52:126:566:00
7:01
#4655
25.2M
25.20 mi12:57:042:54:436:562:31
7:18
#4608
Finish
26.22 mi13:03:493:01:286:566:45
6:37
#4512
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi6331576057606288(Top 24%)5683(Top 37%)5683(Top 277%)
10K6.21 mi3.10 mi6228+1035660+1005660+1006062(Top 23%)5509(Top 36%)5509(Top 268%)
15K9.32 mi3.11 mi6223+55652+85652+86288(Top 24%)5683(Top 37%)5683(Top 277%)
20K12.43 mi3.11 mi6132+915577+755577+755938(Top 22%)5424(Top 36%)5424(Top 264%)
Half13.11 mi0.68 mi6056+765522+555522+554071(Top 15%)3823(Top 25%)3823(Top 186%)
25K15.53 mi2.42 mi5801+2555321+2015321+2014611(Top 17%)4290(Top 28%)4290(Top 209%)
30K18.64 mi3.11 mi5350+4514938+3834938+3833447(Top 13%)3243(Top 21%)3243(Top 158%)
20M20.00 mi1.36 mi5180+1704791+1474791+1473613(Top 14%)3372(Top 22%)3372(Top 164%)
21M21.00 mi1.00 mi5060+1204680+1114680+1113984(Top 15%)3676(Top 24%)3676(Top 179%)
35K21.75 mi0.75 mi4973+874601+794601+793373(Top 13%)3143(Top 21%)3143(Top 153%)
23M23.00 mi1.25 mi4798+1754454+1474454+1473136(Top 12%)2922(Top 19%)2922(Top 142%)
24M24.00 mi1.00 mi4706+924374+804374+803392(Top 13%)3129(Top 21%)3129(Top 152%)
40K24.85 mi0.85 mi4655+514324+504324+503937(Top 15%)3540(Top 23%)3540(Top 173%)
25.2M25.20 mi0.35 mi4608+474284+404284+402984(Top 11%)2739(Top 18%)2739(Top 133%)
Finish26.22 mi1.02 mi4512+964194+904194+903123(Top 12%)2818(Top 19%)2818(Top 137%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21story building
+97ft-345ft

Overall

6288

Males

5683

M50-54

5683

5K→10K

3.1 - 6.2 mi

Top 23%
×5story building
+79ft-138ft

Overall

6062

Males

5509

M50-54

5509

10K→15K

6.2 - 9.3 mi

Top 24%
×3story building
+67ft-78ft

Overall

6288

Males

5683

M50-54

5683

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

5938

Males

5424

M50-54

5424

20K→Half

12.4 - 13.1 mi

Top 15%
×2story building
+19ft-37ft

Overall

4071

Males

3823

M50-54

3823

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4611

Males

4290

M50-54

4290

25K→30K

15.5 - 18.6 mi

Top 13%
×9story building
+181ft-148ft

Overall

3447

Males

3243

M50-54

3243

30K→20M

18.6 - 20.0 mi

Top 14%
×5story building
+64ft-50ft

Overall

3613

Males

3372

M50-54

3372

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

3984

Males

3676

M50-54

3676

21M→35K

21.0 - 21.8 mi

Top 13%
×7story building
+17ft-86ft

Overall

3373

Males

3143

M50-54

3143

35K→23M

21.8 - 23.0 mi

Top 12%
×5story building
+23ft-63ft

Overall

3136

Males

2922

M50-54

2922

23M→24M

23.0 - 24.0 mi

Top 13%
×6story building
+12ft-82ft

Overall

3392

Males

3129

M50-54

3129

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

3937

Males

3540

M50-54

3540

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2984

Males

2739

M50-54

2739

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2story building
+22ft-21ft

Overall

3123

Males

2818

M50-54

2818

Passing Analysis

Category:
Athletes Passed
2205
Passed By
386
Net Change
+1819
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6331
5K → 10K247144+103#6331#6228
10K → 15K120115+5#6228#6223
15K → 20K14352+91#6223#6132
20K → Half760+76#6132#6056
Half → 25K2627+255#6056#5801
25K → 30K4543+451#5801#5350
30K → 20M18313+170#5350#5180
20M → 21M13010+120#5180#5060
21M → 35K881+87#5060#4973
35K → 23M1838+175#4973#4798
23M → 24M1008+92#4798#4706
24M → 40K6716+51#4706#4655
40K → 25.2M492+47#4655#4608
25.2M → Finish1037+96#4608#4512
TOTALS2205386+1819
📊

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