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BOSTON MARATHON 2023

Lam Tien

Bib: 27952•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:35
Rank: #23044
Start → 5K
30:35 | 9:51/mi
10K· 6.21 mi
58:17
Rank: #21999 (+1045)
5K → 10K
27:42 | 8:55/mi
15K· 9.32 mi
1:26:27
Rank: #21623 (+376)
10K → 15K
28:10 | 9:04/mi
20K· 12.43 mi
1:54:52
Rank: #21332 (+291)
15K → 20K
28:25 | 9:09/mi
Half· 13.11 mi
2:00:58
Rank: #21274 (+58)
20K → Half
6:06 | 8:56/mi
25K· 15.53 mi
2:24:26
Rank: #21274
Half → 25K
23:28 | 9:41/mi
30K· 18.64 mi
2:55:32
Rank: #21226 (+48)
25K → 30K
31:06 | 10:01/mi
20M
3:09:26
Rank: #21192 (+34)
30K → 20M
13:54 | 10:14/mi
21M
3:20:13
Rank: #21142 (+50)
20M → 21M
10:47 | 10:47/mi
35K· 21.75 mi
3:27:50
Rank: #21158 (-16)
21M → 35K
7:37 | 10:11/mi
23M
3:41:01
Rank: #21158
35K → 23M
13:11 | 10:32/mi
24M
3:51:29
Rank: #21193 (-35)
23M → 24M
10:28 | 10:28/mi
40K· 24.85 mi
4:00:33
Rank: #21206 (-13)
24M → 40K
9:04 | 10:36/mi
25.2M
4:04:16
Rank: #21183 (+23)
40K → 25.2M
3:43 | 10:47/mi
Finish· 26.22 mi
4:14:10
Rank: #21173 (+10)
25.2M → Finish
9:54 | 9:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:58
Pace9:14 /mi
2nd Half
Distance13.11 mi
Time2:13:12
Pace10:10 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4230:359:5130:35
9:51
-
10K
6.21 mi12:15:2458:179:2327:42
8:55
-0:56
15K
9.32 mi12:43:341:26:279:1728:10
9:04
+0:09
20K
12.43 mi13:11:591:54:529:1528:25
9:09
+0:05
Half
13.11 mi13:18:052:00:589:146:06
8:56
-0:13
25K
15.53 mi13:41:332:24:269:1823:28
9:41
+0:45
30K
18.64 mi14:12:392:55:329:2531:06
10:01
+0:20
20M
20.00 mi14:26:333:09:269:2813:54
10:14
+0:13
21M
21.00 mi14:37:203:20:139:3210:47
10:47
+0:33
35K
21.75 mi14:44:573:27:509:337:37
10:11
-0:36
23M
23.00 mi14:58:083:41:019:3713:11
10:32
+0:21
24M
24.00 mi15:08:363:51:299:3910:28
10:28
-0:04
40K
24.85 mi15:17:404:00:339:419:04
10:36
+0:08
25.2M
25.20 mi15:21:234:04:169:423:43
10:47
+0:11
Finish
26.22 mi15:31:174:14:109:429:54
9:43
-1:04

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

8:55 /mi

Average Pace

9:42 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:51

45% of race

Time at Steady Pace

1:33:06

37% of race

Time at Slower Pace

47:13

19% of race

Average Pace: 9:42 /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 mi11:47:4230:359:5130:35
9:51
#23044
10K
6.21 mi12:15:2458:179:2327:42
8:55
#21999
15K
9.32 mi12:43:341:26:279:1728:10
9:04
#21623
20K
12.43 mi13:11:591:54:529:1528:25
9:09
#21332
Half
13.11 mi13:18:052:00:589:146:06
8:56
#21274
25K
15.53 mi13:41:332:24:269:1823:28
9:41
#21274
30K
18.64 mi14:12:392:55:329:2531:06
10:01
#21226
20M
20.00 mi14:26:333:09:269:2813:54
10:14
#21192
21M
21.00 mi14:37:203:20:139:3210:47
10:47
#21142
35K
21.75 mi14:44:573:27:509:337:37
10:11
#21158
23M
23.00 mi14:58:083:41:019:3713:11
10:32
#21158
24M
24.00 mi15:08:363:51:299:3910:28
10:28
#21193
40K
24.85 mi15:17:404:00:339:419:04
10:36
#21206
25.2M
25.20 mi15:21:234:04:169:423:43
10:47
#21183
Finish
26.22 mi15:31:174:14:109:429:54
9:43
#21173
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi23044136051360520812(Top 78%)12657(Top 83%)12657(Top 565%)
10K6.21 mi3.10 mi21999+104513123+48213123+48220510(Top 77%)12501(Top 82%)12501(Top 558%)
15K9.32 mi3.11 mi21623+37612974+14912974+14920812(Top 78%)12657(Top 83%)12657(Top 565%)
20K12.43 mi3.11 mi21332+29112857+11712857+11720360(Top 76%)12459(Top 82%)12459(Top 556%)
Half13.11 mi0.68 mi21274+5812839+1812839+1820263(Top 76%)12410(Top 82%)12410(Top 554%)
25K15.53 mi2.42 mi2127412831+812831+821399(Top 80%)12877(Top 85%)12877(Top 575%)
30K18.64 mi3.11 mi21226+4812796+3512796+3521066(Top 79%)12660(Top 83%)12660(Top 565%)
20M20.00 mi1.36 mi21192+3412758+3812758+3821112(Top 79%)12611(Top 83%)12611(Top 563%)
21M21.00 mi1.00 mi21142+5012725+3312725+3320357(Top 76%)12212(Top 80%)12212(Top 545%)
35K21.75 mi0.75 mi21158-1612727-212727-221766(Top 82%)12825(Top 85%)12825(Top 572%)
23M23.00 mi1.25 mi2115812715+1212715+1221407(Top 80%)12639(Top 83%)12639(Top 564%)
24M24.00 mi1.00 mi21193-3512719-412719-421989(Top 83%)12870(Top 85%)12870(Top 574%)
40K24.85 mi0.85 mi21206-1312718+112718+121491(Top 81%)12571(Top 83%)12571(Top 561%)
25.2M25.20 mi0.35 mi21183+2312706+1212706+1219983(Top 75%)11891(Top 78%)11891(Top 531%)
Finish26.22 mi1.02 mi21173+1012687+1912687+1920876(Top 78%)12356(Top 81%)12356(Top 551%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

20812

Males

12657

M40-44

12657

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

20510

Males

12501

M40-44

12501

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

20812

Males

12657

M40-44

12657

15K→20K

9.3 - 12.4 mi

Top 76%
×5stories
+106ft-86ft

Overall

20360

Males

12459

M40-44

12459

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

20263

Males

12410

M40-44

12410

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

21399

Males

12877

M40-44

12877

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

21066

Males

12660

M40-44

12660

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

21112

Males

12611

M40-44

12611

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20357

Males

12212

M40-44

12212

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21766

Males

12825

M40-44

12825

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21407

Males

12639

M40-44

12639

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

21989

Males

12870

M40-44

12870

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21491

Males

12571

M40-44

12571

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19983

Males

11891

M40-44

11891

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

20876

Males

12356

M40-44

12356

Passing Analysis

Category:
Athletes Passed
2529
Passed By
658
Net Change
+1871
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23044
5K → 10K10549+1045#23044#21999
10K → 15K40832+376#21999#21623
15K → 20K32635+291#21623#21332
20K → Half635+58#21332#21274
Half → 25K1111110#21274#21274
25K → 30K152104+48#21274#21226
30K → 20M8349+34#21226#21192
20M → 21M8333+50#21192#21142
21M → 35K3551-16#21142#21158
35K → 23M57570#21158#21158
23M → 24M3570-35#21158#21193
24M → 40K4558-13#21193#21206
40K → 25.2M3310+23#21206#21183
25.2M → Finish4434+10#21183#21173
TOTALS2529658+1871
📊

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