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BOSTON MARATHON 2023

Michael Chamberlain

Bib: 29921•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
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
9:42/mi
30:09
↑ 97↓ 3451.5%
10K· 6.21 mi
9:34/mi
59:51
↑ 79↓ 1380.4%
15K· 9.32 mi
10:01/mi
1:30:57
↑ 67↓ 78
20K· 12.43 mi
11:03/mi
2:05:17
↑ 106↓ 860.1%
Half· 13.11 mi
11:36/mi
2:13:12
↑ 19↓ 370.5%
25K· 15.53 mi
12:22/mi
2:43:11
↑ 66↓ 880.2%
30K· 18.64 mi
13:28/mi
3:25:02
↑ 181↓ 1480.2%
20M
14:21/mi
3:44:32
↑ 64↓ 500.2%
21M
15:25/mi
3:59:57
↑ 106↓ 241.6%
35K· 21.75 mi
13:53/mi
4:10:20
↑ 17↓ 861.7%
23M
14:24/mi
4:28:22
↑ 23↓ 630.6%
24M
12:47/mi
4:41:09
↓ 821.3%
40K· 24.85 mi
13:07/mi
4:52:22
↓ 200.3%
25.2M
14:18/mi
4:57:18
↑ 13↓ 160.2%
Finish· 26.22 mi
12:00/mi
5:09:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:12
Pace10:10 /mi
2nd Half
Distance13.11 mi
Time2:56:20
Pace13:27 /mi
📊Positive Split: 32.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:5730:099:4230:09
9:42
-
10K
6.21 mi12:17:3959:519:3829:42
9:34
-0:08
15K
9.32 mi12:48:451:30:579:4531:06
10:01
+0:27
20K
12.43 mi13:23:052:05:1710:0534:20
11:03
+1:02
Half
13.11 mi13:31:002:13:1210:107:55
11:36
+0:33
25K
15.53 mi14:00:592:43:1110:3029:59
12:22
+0:46
30K
18.64 mi14:42:503:25:0211:0041:51
13:28
+1:06
20M
20.00 mi15:02:203:44:3211:1419:30
14:21
+0:53
21M
21.00 mi15:17:453:59:5711:2615:25
15:25
+1:04
35K
21.75 mi15:28:084:10:2011:3110:23
13:53
-1:32
23M
23.00 mi15:46:104:28:2211:4018:02
14:24
+0:31
24M
24.00 mi15:58:574:41:0911:4312:47
12:47
-1:37
40K
24.85 mi16:10:104:52:2211:4611:13
13:07
+0:20
25.2M
25.20 mi16:15:064:57:1811:484:56
14:18
+1:11
Finish
26.22 mi16:27:205:09:3211:4912:14
12:00
-2:18

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

9:34 /mi

Average Pace

11:49 /mi

Slowest Pace

15:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:12

43% of race

Time at Steady Pace

1:48:04

35% of race

Time at Slower Pace

1:08:16

22% of race

Average Pace: 11:48 /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 mi11:47:5730:099:4230:09
9:42
#22671
10K
6.21 mi12:17:3959:519:3829:42
9:34
#22700
15K
9.32 mi12:48:451:30:579:4531:06
10:01
#23031
20K
12.43 mi13:23:052:05:1710:0534:20
11:03
#23601
Half
13.11 mi13:31:002:13:1210:107:55
11:36
#23743
25K
15.53 mi14:00:592:43:1110:3029:59
12:22
#24173
30K
18.64 mi14:42:503:25:0211:0041:51
13:28
#24671
20M
20.00 mi15:02:203:44:3211:1419:30
14:21
#24872
21M
21.00 mi15:17:453:59:5711:2615:25
15:25
#25013
35K
21.75 mi15:28:084:10:2011:3110:23
13:53
#25076
23M
23.00 mi15:46:104:28:2211:4018:02
14:24
#25187
24M
24.00 mi15:58:574:41:0911:4312:47
12:47
#25196
40K
24.85 mi16:10:104:52:2211:4611:13
13:07
#25201
25.2M
25.20 mi16:15:064:57:1811:484:56
14:18
#25209
Finish
26.22 mi16:27:205:09:3211:4912:14
12:00
#25220
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22671134311343123519(Top 88%)13883(Top 91%)13883(Top 263%)
10K6.21 mi3.10 mi22700-2913479-4813479-4822683(Top 85%)13481(Top 89%)13481(Top 255%)
15K9.32 mi3.11 mi23031-33113637-15813637-15823519(Top 88%)13883(Top 91%)13883(Top 263%)
20K12.43 mi3.11 mi23601-57013915-27813915-27824688(Top 93%)14365(Top 95%)14365(Top 272%)
Half13.11 mi0.68 mi23743-14213973-5813973-5825561(Top 96%)14715(Top 97%)14715(Top 278%)
25K15.53 mi2.42 mi24173-43014151-17814151-17825433(Top 96%)14660(Top 97%)14660(Top 277%)
30K18.64 mi3.11 mi24671-49814355-20414355-20425727(Top 97%)14743(Top 97%)14743(Top 279%)
20M20.00 mi1.36 mi24872-20114422-6714422-6726021(Top 98%)14862(Top 98%)14862(Top 281%)
21M21.00 mi1.00 mi25013-14114477-5514477-5525966(Top 98%)14851(Top 98%)14851(Top 281%)
35K21.75 mi0.75 mi25076-6314496-1914496-1926079(Top 98%)14881(Top 98%)14881(Top 282%)
23M23.00 mi1.25 mi25187-11114541-4514541-4526073(Top 98%)14879(Top 98%)14879(Top 282%)
24M24.00 mi1.00 mi25196-914542-114542-125323(Top 95%)14462(Top 95%)14462(Top 274%)
40K24.85 mi0.85 mi25201-514538+414538+425026(Top 94%)14317(Top 94%)14317(Top 271%)
25.2M25.20 mi0.35 mi25209-8145381453825236(Top 95%)14412(Top 95%)14412(Top 273%)
Finish26.22 mi1.02 mi25220-1114544-614544-625233(Top 95%)14425(Top 95%)14425(Top 273%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

23519

Males

13883

M18-39

13883

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

22683

Males

13481

M18-39

13481

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

23519

Males

13883

M18-39

13883

15K→20K

9.3 - 12.4 mi

Top 93%
×5story building
+106ft-86ft

Overall

24688

Males

14365

M18-39

14365

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

25561

Males

14715

M18-39

14715

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

25433

Males

14660

M18-39

14660

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

25727

Males

14743

M18-39

14743

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

26021

Males

14862

M18-39

14862

20M→21M

20.0 - 21.0 mi

Top 98%
×8story building
+106ft-24ft

Overall

25966

Males

14851

M18-39

14851

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

26079

Males

14881

M18-39

14881

35K→23M

21.8 - 23.0 mi

Top 98%
×5story building
+23ft-63ft

Overall

26073

Males

14879

M18-39

14879

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

25323

Males

14462

M18-39

14462

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

25026

Males

14317

M18-39

14317

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25236

Males

14412

M18-39

14412

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2story building
+22ft-21ft

Overall

25233

Males

14425

M18-39

14425

Passing Analysis

Category:
Athletes Passed
413
Passed By
2962
Net Change
-2549
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22671
5K → 10K227256-29#22671#22700
10K → 15K50381-331#22700#23031
15K → 20K19589-570#23031#23601
20K → Half4146-142#23601#23743
Half → 25K19449-430#23743#24173
25K → 30K13511-498#24173#24671
30K → 20M11212-201#24671#24872
20M → 21M5146-141#24872#25013
21M → 35K1073-63#25013#25076
35K → 23M9120-111#25076#25187
23M → 24M1322-9#25187#25196
24M → 40K1924-5#25196#25201
40K → 25.2M412-8#25201#25209
25.2M → Finish1021-11#25209#25220
TOTALS4132962-2549
📊

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