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BOSTON MARATHON 2023

David Pearson

Bib: 1984•M

CO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 26%
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
6:50/mi
21:15
↑ 97↓ 3451.5%
10K· 6.21 mi
6:45/mi
42:12
↑ 79↓ 1380.4%
15K· 9.32 mi
6:46/mi
1:03:12
↑ 67↓ 78
20K· 12.43 mi
6:49/mi
1:24:24
↑ 106↓ 860.1%
Half· 13.11 mi
6:49/mi
1:29:03
↑ 19↓ 370.5%
25K· 15.53 mi
6:50/mi
1:45:38
↑ 66↓ 880.2%
30K· 18.64 mi
7:03/mi
2:07:31
↑ 181↓ 1480.2%
20M
7:02/mi
2:17:05
↑ 64↓ 500.2%
21M
7:09/mi
2:24:14
↑ 106↓ 241.6%
35K· 21.75 mi
6:50/mi
2:29:21
↑ 17↓ 861.7%
23M
7:00/mi
2:38:07
↑ 23↓ 630.6%
24M
6:48/mi
2:44:55
↓ 821.3%
40K· 24.85 mi
6:56/mi
2:50:51
↓ 200.3%
25.2M
7:15/mi
2:53:21
↑ 13↓ 160.2%
Finish· 26.22 mi
6:35/mi
3:00:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:03
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:31:01
Pace6:57 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:4221:156:5021:15
6:50
-
10K
6.21 mi10:42:3942:126:4720:57
6:45
-0:05
15K
9.32 mi11:03:391:03:126:4721:00
6:46
+0:01
20K
12.43 mi11:24:511:24:246:4721:12
6:49
+0:03
Half
13.11 mi11:29:301:29:036:484:39
6:49
0:00
25K
15.53 mi11:46:051:45:386:4816:35
6:50
+0:01
30K
18.64 mi12:07:582:07:316:5021:53
7:03
+0:13
20M
20.00 mi12:17:322:17:056:519:34
7:02
-0:01
21M
21.00 mi12:24:412:24:146:527:09
7:09
+0:07
35K
21.75 mi12:29:482:29:216:525:07
6:50
-0:19
23M
23.00 mi12:38:342:38:076:528:46
7:00
+0:10
24M
24.00 mi12:45:222:44:556:526:48
6:48
-0:12
40K
24.85 mi12:51:182:50:516:525:56
6:56
+0:08
25.2M
25.20 mi12:53:482:53:216:532:30
7:15
+0:19
Finish
26.22 mi13:00:313:00:046:526:43
6:35
-0:40

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

6:52 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:57:34

99% of race

Time at Steady Pace

2:30

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:52 /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 mi10:21:4221:156:5021:15
6:50
#5043
10K
6.21 mi10:42:3942:126:4720:57
6:45
#4891
15K
9.32 mi11:03:391:03:126:4721:00
6:46
#4809
20K
12.43 mi11:24:511:24:246:4721:12
6:49
#4751
Half
13.11 mi11:29:301:29:036:484:39
6:49
#4789
25K
15.53 mi11:46:051:45:386:4816:35
6:50
#4697
30K
18.64 mi12:07:582:07:316:5021:53
7:03
#4677
20M
20.00 mi12:17:322:17:056:519:34
7:02
#4618
21M
21.00 mi12:24:412:24:146:527:09
7:09
#4479
35K
21.75 mi12:29:482:29:216:525:07
6:50
#4465
23M
23.00 mi12:38:342:38:076:528:46
7:00
#4392
24M
24.00 mi12:45:222:44:556:526:48
6:48
#4347
40K
24.85 mi12:51:182:50:516:525:56
6:56
#4306
25.2M
25.20 mi12:53:482:53:216:532:30
7:15
#4267
Finish
26.22 mi13:00:313:00:046:526:43
6:35
#4209
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5043467846784694(Top 18%)4379(Top 29%)4379(Top 83%)
10K6.21 mi3.10 mi4891+1524542+1364542+1364753(Top 18%)4417(Top 29%)4417(Top 84%)
15K9.32 mi3.11 mi4809+824473+694473+694694(Top 18%)4379(Top 29%)4379(Top 83%)
20K12.43 mi3.11 mi4751+584431+424431+424647(Top 17%)4325(Top 28%)4325(Top 82%)
Half13.11 mi0.68 mi4789-384462-314462-315314(Top 20%)4897(Top 32%)4897(Top 93%)
25K15.53 mi2.42 mi4697+924375+874375+874495(Top 17%)4187(Top 28%)4187(Top 79%)
30K18.64 mi3.11 mi4677+204361+144361+144618(Top 17%)4270(Top 28%)4270(Top 81%)
20M20.00 mi1.36 mi4618+594305+564305+564263(Top 16%)3934(Top 26%)3934(Top 74%)
21M21.00 mi1.00 mi4479+1394180+1254180+1252865(Top 11%)2690(Top 18%)2690(Top 51%)
35K21.75 mi0.75 mi4465+144163+174163+174422(Top 17%)4040(Top 27%)4040(Top 76%)
23M23.00 mi1.25 mi4392+734103+604103+603803(Top 14%)3510(Top 23%)3510(Top 66%)
24M24.00 mi1.00 mi4347+454063+404063+403661(Top 14%)3360(Top 22%)3360(Top 64%)
40K24.85 mi0.85 mi4306+414023+404023+403543(Top 13%)3222(Top 21%)3222(Top 61%)
25.2M25.20 mi0.35 mi4267+393985+383985+382758(Top 10%)2544(Top 17%)2544(Top 48%)
Finish26.22 mi1.02 mi4209+583932+533932+532952(Top 11%)2677(Top 18%)2677(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21story building
+97ft-345ft

Overall

4694

Males

4379

M18-39

4379

5K→10K

3.1 - 6.2 mi

Top 18%
×5story building
+79ft-138ft

Overall

4753

Males

4417

M18-39

4417

10K→15K

6.2 - 9.3 mi

Top 18%
×3story building
+67ft-78ft

Overall

4694

Males

4379

M18-39

4379

15K→20K

9.3 - 12.4 mi

Top 17%
×5story building
+106ft-86ft

Overall

4647

Males

4325

M18-39

4325

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5314

Males

4897

M18-39

4897

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4495

Males

4187

M18-39

4187

25K→30K

15.5 - 18.6 mi

Top 17%
×9story building
+181ft-148ft

Overall

4618

Males

4270

M18-39

4270

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4263

Males

3934

M18-39

3934

20M→21M

20.0 - 21.0 mi

Top 11%
×8story building
+106ft-24ft

Overall

2865

Males

2690

M18-39

2690

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4422

Males

4040

M18-39

4040

35K→23M

21.8 - 23.0 mi

Top 14%
×5story building
+23ft-63ft

Overall

3803

Males

3510

M18-39

3510

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3661

Males

3360

M18-39

3360

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3543

Males

3222

M18-39

3222

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2758

Males

2544

M18-39

2544

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2story building
+22ft-21ft

Overall

2952

Males

2677

M18-39

2677

Passing Analysis

Category:
Athletes Passed
1525
Passed By
691
Net Change
+834
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5043
5K → 10K282130+152#5043#4891
10K → 15K15573+82#4891#4809
15K → 20K13678+58#4809#4751
20K → Half1856-38#4751#4789
Half → 25K14351+92#4789#4697
25K → 30K138118+20#4697#4677
30K → 20M9435+59#4677#4618
20M → 21M1489+139#4618#4479
21M → 35K5036+14#4479#4465
35K → 23M11138+73#4465#4392
23M → 24M7328+45#4392#4347
24M → 40K6019+41#4347#4306
40K → 25.2M423+39#4306#4267
25.2M → Finish7517+58#4267#4209
TOTALS1525691+834
📊

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