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BOSTON MARATHON 2023

Eric Lashway

FL

Bib: 5061 M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 19%
Gender (Male)
#0 / 15176
Top 30%
Division (M18-39)
#0 / 5285
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
6:45/mi
20:57
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:40/mi
41:40
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:45/mi
1:02:39
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:53/mi
1:24:03
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:49/mi
1:28:42
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:55/mi
1:45:29
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:10/mi
2:07:45
↑ 181↓ 1480.2%
138 ft elev
20M
7:10/mi
2:17:30
↑ 64↓ 500.2%
148 ft elev
21M
7:36/mi
2:25:06
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:53/mi
2:30:15
↑ 17↓ 861.7%
156 ft elev
23M
7:11/mi
2:39:15
↑ 23↓ 630.6%
116 ft elev
24M
7:13/mi
2:46:28
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:37/mi
2:52:59
↓ 200.3%
20 ft elev
25.2M
8:19/mi
2:55:51
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:49/mi
3:03:49
↑ 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
1:28:426:46 /mi⚡ faster
2nd Half
1:35:077:15 /mi+7.2%
Positive split — 7.2% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
20:576:453.11 mi20:57
6:45
-
10K
41:406:423.10 mi20:43
6:40
-0:05
15K
1:02:396:433.11 mi20:59
6:45
+0:05
20K
1:24:036:463.11 mi21:24
6:53
+0:08
Half(13.11 mi)
1:28:426:460.68 mi4:39
6:49
-0:04
25K
1:45:296:472.42 mi16:47
6:55
+0:06
30K
2:07:456:513.11 mi22:16
7:10
+0:15
20M
2:17:306:521.36 mi9:45
7:10
0:00
21M
2:25:066:551.00 mi7:36
7:36
+0:26
35K
2:30:156:550.75 mi5:09
6:53
-0:43
23M
2:39:156:551.25 mi9:00
7:11
+0:18
24M
2:46:286:561.00 mi7:13
7:13
+0:02
40K
2:52:596:580.85 mi6:31
7:37
+0:24
25.2M
2:55:516:590.35 mi2:52
8:19
+0:42
Finish(26.22 mi)
3:03:497:011.02 mi7:58
7:49
-0:30
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:40 /mi

Average Pace

7:01 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:50:38

60% of race

Time at Steady Pace

48:14

26% of race

Time at Slower Pace

24:57

14% of race

Average Pace: 7:01 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi407038173817465643494349
10K3.10 mi4045+253802+153802+15404638053805
15K3.11 mi4233-1883967-1653967-165465643494349
20K3.11 mi4484-2514191-2244191-224524048414841
Half(13.11 mi)0.68 mi4521-374224-334224-33536149444944
25K2.42 mi4601-804296-724296-72510047104710
30K3.11 mi4781-1804450-1544450-154530248374837
20M1.36 mi4790-94456-64456-6497845244524
21M1.00 mi4805-154463-74463-7506945224522
35K0.75 mi4771+344436+274436+27468542504250
23M1.25 mi4746+254411+254411+25473242614261
24M1.00 mi4778-324434-234434-23580549714971
40K0.85 mi4841-634471-374471-37740758675867
25.2M0.35 mi4872-314494-234494-23826262946294
Finish(26.22 mi)1.02 mi5013-1414607-1134607-1131075076617661

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21story building
+97ft-345ft

Overall

4656

Males

4349

M18-39

4349

5K→10K

3.1 - 6.2 mi

Top 15%
×5story building
+79ft-138ft

Overall

4046

Males

3805

M18-39

3805

10K→15K

6.2 - 9.3 mi

Top 17%
×3story building
+67ft-78ft

Overall

4656

Males

4349

M18-39

4349

15K→20K

9.3 - 12.4 mi

Top 20%
×5story building
+106ft-86ft

Overall

5240

Males

4841

M18-39

4841

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5361

Males

4944

M18-39

4944

Half→25K

13.1 - 15.5 mi

Top 19%
×4story building
+66ft-88ft

Overall

5100

Males

4710

M18-39

4710

25K→30K

15.5 - 18.6 mi

Top 20%
×9story building
+181ft-148ft

Overall

5302

Males

4837

M18-39

4837

30K→20M

18.6 - 20.0 mi

Top 19%
×5story building
+64ft-50ft

Overall

4978

Males

4524

M18-39

4524

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5069

Males

4522

M18-39

4522

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

4685

Males

4250

M18-39

4250

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4732

Males

4261

M18-39

4261

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

5805

Males

4971

M18-39

4971

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7407

Males

5867

M18-39

5867

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8262

Males

6294

M18-39

6294

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

10750

Males

7661

M18-39

7661

Passing Analysis

Category:
▼Net Change
0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#4070
5K → 10K
216241+25
#4070 → #4045
10K → 15K
25264-188
#4045 → #4233
15K → 20K
28837-251
#4233 → #4484
20K → Half
5114-37
#4484 → #4521
Half → 25K
15272-80
#4521 → #4601
25K → 30K
26181-180
#4601 → #4781
30K → 20M
7465-9
#4781 → #4790
20M → 21M
6348-15
#4790 → #4805
21M → 35K
2761+34
#4805 → #4771
35K → 23M
5277+25
#4771 → #4746
23M → 24M
6432-32
#4746 → #4778
24M → 40K
9229-63
#4778 → #4841
40K → 25.2M
4110-31
#4841 → #4872
25.2M → Finish
15413-141
#4872 → #5013
TOTALS
1787844-943
#4070 → #5013

Passing Visualized

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