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BOSTON MARATHON 2023

Dennis Sam

CA

Bib: 7455 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 25%
Gender (Male)
#0 / 15176
Top 39%
Masters (Masters Men)
#0 / 9891
Top 25%
Division (M45-49)
#0 / 2252
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:21/mi
22:50
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:05/mi
44:50
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:10/mi
1:07:07
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:16/mi
1:29:41
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:11/mi
1:34:35
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:22/mi
1:52:27
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:25/mi
2:15:29
↑ 181↓ 1480.2%
138 ft elev
20M
7:24/mi
2:25:33
↑ 64↓ 500.2%
148 ft elev
21M
7:54/mi
2:33:27
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:10/mi
2:38:49
↑ 17↓ 861.7%
156 ft elev
23M
7:23/mi
2:48:04
↑ 23↓ 630.6%
116 ft elev
24M
7:15/mi
2:55:19
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:06/mi
3:01:23
↓ 200.3%
20 ft elev
25.2M
7:58/mi
3:04:08
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:10/mi
3:11:26
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:34:357:13 /mi⚡ faster
2nd Half
1:36:517:23 /mi+2.4%
Positive split — 2.4% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5022:507:2122:50
7:21
-
10K
6.21 mi11:13:5044:507:1322:00
7:05
-0:16
15K
9.32 mi11:36:071:07:077:1222:17
7:10
+0:05
20K
12.43 mi11:58:411:29:417:1322:34
7:16
+0:06
Half
13.11 mi12:03:351:34:357:134:54
7:11
-0:05
25K
15.53 mi12:21:271:52:277:1417:52
7:22
+0:11
30K
18.64 mi12:44:292:15:297:1623:02
7:25
+0:03
20M
20.00 mi12:54:332:25:337:1710:04
7:24
-0:01
21M
21.00 mi13:02:272:33:277:187:54
7:54
+0:30
35K
21.75 mi13:07:492:38:497:185:22
7:10
-0:44
23M
23.00 mi13:17:042:48:047:189:15
7:23
+0:13
24M
24.00 mi13:24:192:55:197:187:15
7:15
-0:08
40K
24.85 mi13:30:233:01:237:186:04
7:06
-0:09
25.2M
25.20 mi13:33:083:04:087:182:45
7:58
+0:52
Finish
26.22 mi13:40:263:11:267:187:18
7:10
-0:48

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

7:05 /mi

Average Pace

7:18 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:00:47

94% of race

Time at Steady Pace

10:39

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:18 /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 mi10:51:5022:507:2122:50
7:21
#8436
10K
6.21 mi11:13:5044:507:1322:00
7:05
#7852
15K
9.32 mi11:36:071:07:077:1222:17
7:10
#7751
20K
12.43 mi11:58:411:29:417:1322:34
7:16
#7664
Half
13.11 mi12:03:351:34:357:134:54
7:11
#7658
25K
15.53 mi12:21:271:52:277:1417:52
7:22
#7640
30K
18.64 mi12:44:292:15:297:1623:02
7:25
#7407
20M
20.00 mi12:54:332:25:337:1710:04
7:24
#7291
21M
21.00 mi13:02:272:33:277:187:54
7:54
#7232
35K
21.75 mi13:07:492:38:497:185:22
7:10
#7184
23M
23.00 mi13:17:042:48:047:189:15
7:23
#7042
24M
24.00 mi13:24:192:55:197:187:15
7:15
#6975
40K
24.85 mi13:30:233:01:237:186:04
7:06
#6839
25.2M
25.20 mi13:33:083:04:087:182:45
7:58
#6802
Finish
26.22 mi13:40:263:11:267:187:18
7:10
#6751
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi843672557255759466556655
10K6.21 mi3.10 mi7852+5846874+3816874+381731564666466
15K9.32 mi3.11 mi7751+1016793+816793+81759466556655
20K12.43 mi3.11 mi7664+876717+766717+76751765696569
Half13.11 mi0.68 mi7658+66710+76710+7766666736673
25K15.53 mi2.42 mi7640+186685+256685+25774266306630
30K18.64 mi3.11 mi7407+2336500+1856500+185667458485848
20M20.00 mi1.36 mi7291+1166404+966404+96622754685468
21M21.00 mi1.00 mi7232+596351+536351+53670856775677
35K21.75 mi0.75 mi7184+486306+456306+45635154795479
23M23.00 mi1.25 mi7042+1426179+1276179+127579250425042
24M24.00 mi1.00 mi6975+676115+646115+64603351315131
40K24.85 mi0.85 mi6839+1366004+1116004+111437138873887
25.2M25.20 mi0.35 mi6802+375969+355969+35631351495149
Finish26.22 mi1.02 mi6751+515921+485921+48617650495049

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

7594

Males

6655

M45-49

6655

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7315

Males

6466

M45-49

6466

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

7594

Males

6655

M45-49

6655

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7517

Males

6569

M45-49

6569

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

7666

Males

6673

M45-49

6673

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

7742

Males

6630

M45-49

6630

25K→30K

15.5 - 18.6 mi

Top 25%
×9story building
+181ft-148ft

Overall

6674

Males

5848

M45-49

5848

30K→20M

18.6 - 20.0 mi

Top 23%
×5story building
+64ft-50ft

Overall

6227

Males

5468

M45-49

5468

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

6708

Males

5677

M45-49

5677

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6351

Males

5479

M45-49

5479

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

5792

Males

5042

M45-49

5042

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6033

Males

5131

M45-49

5131

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4371

Males

3887

M45-49

3887

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6313

Males

5149

M45-49

5149

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6176

Males

5049

M45-49

5049

Passing Analysis

Category:
Athletes Passed
2177
Passed By
492
Net Change
+1685
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8436
5K → 10K64561+584#8436#7852
10K → 15K19190+101#7852#7751
15K → 20K15467+87#7751#7664
20K → Half2822+6#7664#7658
Half → 25K9779+18#7658#7640
25K → 30K26532+233#7640#7407
30K → 20M1248+116#7407#7291
20M → 21M9031+59#7291#7232
21M → 35K6214+48#7232#7184
35K → 23M16018+142#7184#7042
23M → 24M8922+67#7042#6975
24M → 40K1415+136#6975#6839
40K → 25.2M5013+37#6839#6802
25.2M → Finish8130+51#6802#6751
TOTALS2177492+1685

Passing Charts

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