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BOSTON MARATHON 2023

Jeremy Lee

Bib: 29878•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
8:51/mi
27:31
↑ 97↓ 3451.5%
10K· 6.21 mi
8:41/mi
54:29
↑ 79↓ 1380.4%
15K· 9.32 mi
8:59/mi
1:22:25
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:50:14
↑ 106↓ 860.1%
Half· 13.11 mi
8:46/mi
1:56:13
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:18:50
↑ 66↓ 880.2%
30K· 18.64 mi
9:41/mi
2:48:54
↑ 181↓ 1480.2%
20M
9:40/mi
3:02:02
↑ 64↓ 500.2%
21M
10:33/mi
3:12:35
↑ 106↓ 241.6%
35K· 21.75 mi
9:48/mi
3:19:55
↑ 17↓ 861.7%
23M
10:01/mi
3:32:27
↑ 23↓ 630.6%
24M
9:30/mi
3:41:57
↓ 821.3%
40K· 24.85 mi
9:30/mi
3:50:04
↓ 200.3%
25.2M
11:27/mi
3:54:01
↑ 13↓ 160.2%
Finish· 26.22 mi
8:50/mi
4:03:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:13
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time2:06:48
Pace9:40 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:3727:318:5127:31
8:51
-
10K
6.21 mi12:12:3554:298:4626:58
8:41
-0:10
15K
9.32 mi12:40:311:22:258:5127:56
8:59
+0:18
20K
12.43 mi13:08:201:50:148:5227:49
8:57
-0:02
Half
13.11 mi13:14:191:56:138:525:59
8:46
-0:11
25K
15.53 mi13:36:562:18:508:5622:37
9:20
+0:34
30K
18.64 mi14:07:002:48:549:0430:04
9:41
+0:21
20M
20.00 mi14:20:083:02:029:0613:08
9:40
-0:01
21M
21.00 mi14:30:413:12:359:1010:33
10:33
+0:53
35K
21.75 mi14:38:013:19:559:127:20
9:48
-0:45
23M
23.00 mi14:50:333:32:279:1412:32
10:01
+0:13
24M
24.00 mi15:00:033:41:579:159:30
9:30
-0:31
40K
24.85 mi15:08:103:50:049:158:07
9:30
0:00
25.2M
25.20 mi15:12:073:54:019:173:57
11:27
+1:57
Finish
26.22 mi15:21:074:03:019:179:00
8:50
-2:37

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

8:41 /mi

Average Pace

9:17 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:13

52% of race

Time at Steady Pace

1:30:46

37% of race

Time at Slower Pace

27:02

11% of race

Average Pace: 9:16 /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 mi11:45:3727:318:5127:31
8:51
#19768
10K
6.21 mi12:12:3554:298:4626:58
8:41
#19496
15K
9.32 mi12:40:311:22:258:5127:56
8:59
#19822
20K
12.43 mi13:08:201:50:148:5227:49
8:57
#19701
Half
13.11 mi13:14:191:56:138:525:59
8:46
#19686
25K
15.53 mi13:36:562:18:508:5622:37
9:20
#19821
30K
18.64 mi14:07:002:48:549:0430:04
9:41
#19880
20M
20.00 mi14:20:083:02:029:0613:08
9:40
#19820
21M
21.00 mi14:30:413:12:359:1010:33
10:33
#19812
35K
21.75 mi14:38:013:19:559:127:20
9:48
#19863
23M
23.00 mi14:50:333:32:279:1412:32
10:01
#19887
24M
24.00 mi15:00:033:41:579:159:30
9:30
#19857
40K
24.85 mi15:08:103:50:049:158:07
9:30
#19798
25.2M
25.20 mi15:12:073:54:019:173:57
11:27
#19841
Finish
26.22 mi15:21:074:03:019:179:00
8:50
#19755
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi19768120711207120454(Top 77%)12502(Top 82%)12502(Top 609%)
10K6.21 mi3.10 mi19496+27212016+5512016+5519304(Top 73%)12017(Top 79%)12017(Top 586%)
15K9.32 mi3.11 mi19822-32612169-15312169-15320454(Top 77%)12502(Top 82%)12502(Top 609%)
20K12.43 mi3.11 mi19701+12112135+3412135+3419474(Top 73%)12087(Top 80%)12087(Top 589%)
Half13.11 mi0.68 mi19686+1512137-212137-219322(Top 73%)12028(Top 79%)12028(Top 586%)
25K15.53 mi2.42 mi19821-13512182-4512182-4520276(Top 76%)12404(Top 82%)12404(Top 604%)
30K18.64 mi3.11 mi19880-5912194-1212194-1220053(Top 75%)12234(Top 81%)12234(Top 596%)
20M20.00 mi1.36 mi19820+6012168+2612168+2619438(Top 73%)11876(Top 78%)11876(Top 579%)
21M21.00 mi1.00 mi19812+812162+612162+619734(Top 74%)11930(Top 79%)11930(Top 581%)
35K21.75 mi0.75 mi19863-5112165-312165-320748(Top 78%)12363(Top 81%)12363(Top 602%)
23M23.00 mi1.25 mi19887-2412168-312168-320013(Top 75%)12027(Top 79%)12027(Top 586%)
24M24.00 mi1.00 mi19857+3012149+1912149+1919194(Top 72%)11615(Top 77%)11615(Top 566%)
40K24.85 mi0.85 mi19798+5912110+3912110+3918303(Top 69%)11185(Top 74%)11185(Top 545%)
25.2M25.20 mi0.35 mi19841-4312125-1512125-1521421(Top 80%)12570(Top 83%)12570(Top 613%)
Finish26.22 mi1.02 mi19755+8612089+3612089+3617195(Top 65%)10697(Top 70%)10697(Top 521%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

20454

Males

12502

M50-54

12502

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

19304

Males

12017

M50-54

12017

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

20454

Males

12502

M50-54

12502

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19474

Males

12087

M50-54

12087

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19322

Males

12028

M50-54

12028

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20276

Males

12404

M50-54

12404

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

20053

Males

12234

M50-54

12234

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

19438

Males

11876

M50-54

11876

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19734

Males

11930

M50-54

11930

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20748

Males

12363

M50-54

12363

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

20013

Males

12027

M50-54

12027

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19194

Males

11615

M50-54

11615

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18303

Males

11185

M50-54

11185

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21421

Males

12570

M50-54

12570

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17195

Males

10697

M50-54

10697

Passing Analysis

Category:
Athletes Passed
1594
Passed By
1581
Net Change
+13
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19768
5K → 10K479207+272#19768#19496
10K → 15K79405-326#19496#19822
15K → 20K236115+121#19822#19701
20K → Half4328+15#19701#19686
Half → 25K67202-135#19686#19821
25K → 30K146205-59#19821#19880
30K → 20M11252+60#19880#19820
20M → 21M8476+8#19820#19812
21M → 35K3283-51#19812#19863
35K → 23M6488-24#19863#19887
23M → 24M7141+30#19887#19857
24M → 40K7617+59#19857#19798
40K → 25.2M1154-43#19798#19841
25.2M → Finish948+86#19841#19755
TOTALS15941581+13
📊

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