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BOSTON MARATHON 2023

Giang Lam

Bib: 10558•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 20%
Gender (Male)
#0 / 15176
Top 31%
Masters (Masters Men)
#0 / 9891
Top 17%
Division (M50-54)
#0 / 2052
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:51
Rank: #3777
Start → 5K
20:51 | 6:43/mi
10K· 6.21 mi
41:17
Rank: #3490 (+287)
5K → 10K
20:26 | 6:35/mi
15K· 9.32 mi
1:02:08
Rank: #3682 (-192)
10K → 15K
20:51 | 6:43/mi
20K· 12.43 mi
1:23:07
Rank: #3754 (-72)
15K → 20K
20:59 | 6:45/mi
Half· 13.11 mi
1:27:42
Rank: #3784 (-30)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:44:19
Rank: #3915 (-131)
Half → 25K
16:37 | 6:51/mi
30K· 18.64 mi
2:06:12
Rank: #4044 (-129)
25K → 30K
21:53 | 7:03/mi
20M
2:16:23
Rank: #4312 (-268)
30K → 20M
10:11 | 7:30/mi
21M
2:24:15
Rank: #4489 (-177)
20M → 21M
7:52 | 7:52/mi
35K· 21.75 mi
2:29:30
Rank: #4534 (-45)
21M → 35K
5:15 | 7:01/mi
23M
2:38:50
Rank: #4636 (-102)
35K → 23M
9:20 | 7:27/mi
24M
2:46:20
Rank: #4749 (-113)
23M → 24M
7:30 | 7:30/mi
40K· 24.85 mi
2:53:08
Rank: #4879 (-130)
24M → 40K
6:48 | 7:57/mi
25.2M
2:56:15
Rank: #4965 (-86)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:04:50
Rank: #5217 (-252)
25.2M → Finish
8:35 | 8:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:42
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:37:08
Pace7:25 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:1820:516:4320:51
6:43
-
10K
6.21 mi11:07:4441:176:3920:26
6:35
-0:08
15K
9.32 mi11:28:351:02:086:4020:51
6:43
+0:08
20K
12.43 mi11:49:341:23:076:4120:59
6:45
+0:02
Half
13.11 mi11:54:091:27:426:414:35
6:43
-0:02
25K
15.53 mi12:10:461:44:196:4316:37
6:51
+0:08
30K
18.64 mi12:32:392:06:126:4621:53
7:03
+0:12
20M
20.00 mi12:42:502:16:236:4910:11
7:30
+0:27
21M
21.00 mi12:50:422:24:156:527:52
7:52
+0:22
35K
21.75 mi12:55:572:29:306:525:15
7:01
-0:51
23M
23.00 mi13:05:172:38:506:549:20
7:27
+0:26
24M
24.00 mi13:12:472:46:206:567:30
7:30
+0:03
40K
24.85 mi13:19:352:53:086:586:48
7:57
+0:27
25.2M
25.20 mi13:22:422:56:157:003:07
9:02
+1:05
Finish
26.22 mi13:31:173:04:507:038:35
8:25
-0:37

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

6:35 /mi

Average Pace

7:03 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

20:26

11% of race

Time at Steady Pace

1:51:01

60% of race

Time at Slower Pace

53:23

29% of race

Average Pace: 7:03 /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 mi10:47:1820:516:4320:51
6:43
#3777
10K
6.21 mi11:07:4441:176:3920:26
6:35
#3490
15K
9.32 mi11:28:351:02:086:4020:51
6:43
#3682
20K
12.43 mi11:49:341:23:076:4120:59
6:45
#3754
Half
13.11 mi11:54:091:27:426:414:35
6:43
#3784
25K
15.53 mi12:10:461:44:196:4316:37
6:51
#3915
30K
18.64 mi12:32:392:06:126:4621:53
7:03
#4044
20M
20.00 mi12:42:502:16:236:4910:11
7:30
#4312
21M
21.00 mi12:50:422:24:156:527:52
7:52
#4489
35K
21.75 mi12:55:572:29:306:525:15
7:01
#4534
23M
23.00 mi13:05:172:38:506:549:20
7:27
#4636
24M
24.00 mi13:12:472:46:206:567:30
7:30
#4749
40K
24.85 mi13:19:352:53:086:586:48
7:57
#4879
25.2M
25.20 mi13:22:422:56:157:003:07
9:02
#4965
Finish
26.22 mi13:31:173:04:507:038:35
8:25
#5217
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi3777355135514247(Top 16%)3984(Top 26%)3984(Top 194%)
10K6.21 mi3.10 mi3490+2873295+2563295+2563327(Top 12%)3166(Top 21%)3166(Top 154%)
15K9.32 mi3.11 mi3682-1923478-1833478-1834247(Top 16%)3984(Top 26%)3984(Top 194%)
20K12.43 mi3.11 mi3754-723548-703548-704031(Top 15%)3785(Top 25%)3785(Top 184%)
Half13.11 mi0.68 mi3784-303576-283576-284569(Top 17%)4261(Top 28%)4261(Top 208%)
25K15.53 mi2.42 mi3915-1313687-1113687-1114623(Top 17%)4302(Top 28%)4302(Top 210%)
30K18.64 mi3.11 mi4044-1293803-1163803-1164636(Top 17%)4288(Top 28%)4288(Top 209%)
20M20.00 mi1.36 mi4312-2684034-2314034-2316713(Top 25%)5773(Top 38%)5773(Top 281%)
21M21.00 mi1.00 mi4489-1774190-1564190-1566508(Top 24%)5546(Top 37%)5546(Top 270%)
35K21.75 mi0.75 mi4534-454228-384228-385421(Top 20%)4817(Top 32%)4817(Top 235%)
23M23.00 mi1.25 mi4636-1024311-834311-836151(Top 23%)5280(Top 35%)5280(Top 257%)
24M24.00 mi1.00 mi4749-1134410-994410-997658(Top 29%)6096(Top 40%)6096(Top 297%)
40K24.85 mi0.85 mi4879-1304504-944504-949677(Top 36%)7155(Top 47%)7155(Top 349%)
25.2M25.20 mi0.35 mi4965-864572-684572-6812629(Top 47%)8542(Top 56%)8542(Top 416%)
Finish26.22 mi1.02 mi5217-2524773-2014773-20114846(Top 56%)9641(Top 64%)9641(Top 470%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4247

Males

3984

M50-54

3984

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3327

Males

3166

M50-54

3166

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4247

Males

3984

M50-54

3984

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4031

Males

3785

M50-54

3785

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4569

Males

4261

M50-54

4261

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4623

Males

4302

M50-54

4302

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4636

Males

4288

M50-54

4288

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6713

Males

5773

M50-54

5773

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6508

Males

5546

M50-54

5546

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5421

Males

4817

M50-54

4817

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6151

Males

5280

M50-54

5280

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7658

Males

6096

M50-54

6096

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9677

Males

7155

M50-54

7155

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12629

Males

8542

M50-54

8542

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

14846

Males

9641

M50-54

9641

Passing Analysis

Category:
Athletes Passed
778
Passed By
2218
Net Change
-1440
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3777
5K → 10K36881+287#3777#3490
10K → 15K49241-192#3490#3682
15K → 20K71143-72#3682#3754
20K → Half1242-30#3754#3784
Half → 25K48179-131#3784#3915
25K → 30K76205-129#3915#4044
30K → 20M15283-268#4044#4312
20M → 21M22199-177#4312#4489
21M → 35K3277-45#4489#4534
35K → 23M41143-102#4534#4636
23M → 24M18131-113#4636#4749
24M → 40K16146-130#4749#4879
40K → 25.2M288-86#4879#4965
25.2M → Finish8260-252#4965#5217
TOTALS7782218-1440
📊

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