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BOSTON MARATHON 2023

Michael Windfeld

Bib: 27811 M DK

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:26/mi
29:19
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:40/mi
59:20
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:25/mi
1:28:34
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:40/mi
1:58:36
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:37/mi
2:05:10
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:53/mi
2:29:08
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
10:21/mi
3:01:18
↑ 181↓ 1480.2%
138 ft elev
20M
10:44/mi
3:15:53
↑ 64↓ 500.2%
148 ft elev
21M
11:23/mi
3:27:16
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:00/mi
3:34:45
↑ 17↓ 861.7%
156 ft elev
23M
10:35/mi
3:48:00
↑ 23↓ 630.6%
116 ft elev
24M
10:07/mi
3:58:07
↓ 821.3%
34 ft elev
40K· 24.85 mi
10:15/mi
4:06:53
↓ 200.3%
20 ft elev
25.2M
11:19/mi
4:10:47
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:48/mi
4:20:46
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:10
Pace9:33 /mi
2nd Half
Distance13.11 mi
Time2:15:36
Pace10:21 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5129:199:2629:19
9:26
-
10K
6.21 mi12:19:5259:209:3330:01
9:40
+0:14
15K
9.32 mi12:49:061:28:349:3029:14
9:25
-0:15
20K
12.43 mi13:19:081:58:369:3330:02
9:40
+0:15
Half
13.11 mi13:25:422:05:109:336:34
9:37
-0:03
25K
15.53 mi13:49:402:29:089:3623:58
9:53
+0:16
30K
18.64 mi14:21:503:01:189:4432:10
10:21
+0:28
20M
20.00 mi14:36:253:15:539:4814:35
10:44
+0:23
21M
21.00 mi14:47:483:27:169:5211:23
11:23
+0:39
35K
21.75 mi14:55:173:34:459:527:29
10:00
-1:23
23M
23.00 mi15:08:323:48:009:5513:15
10:35
+0:35
24M
24.00 mi15:18:393:58:079:5510:07
10:07
-0:28
40K
24.85 mi15:27:254:06:539:568:46
10:15
+0:08
25.2M
25.20 mi15:31:194:10:479:573:54
11:19
+1:04
Finish
26.22 mi15:41:184:20:469:579:59
9:48
-1:31

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

9:25 /mi

Average Pace

9:57 /mi

Slowest Pace

11:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:10

48% of race

Time at Steady Pace

1:00:19

23% of race

Time at Slower Pace

1:15:17

29% of race

Average Pace: 9:57 /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 mi11:49:5129:199:2629:19
9:26
#21893
10K
6.21 mi12:19:5259:209:3330:01
9:40
#22459
15K
9.32 mi12:49:061:28:349:3029:14
9:25
#22317
20K
12.43 mi13:19:081:58:369:3330:02
9:40
#22237
Half
13.11 mi13:25:422:05:109:336:34
9:37
#22242
25K
15.53 mi13:49:402:29:089:3623:58
9:53
#22197
30K
18.64 mi14:21:503:01:189:4432:10
10:21
#22143
20M
20.00 mi14:36:253:15:539:4814:35
10:44
#22141
21M
21.00 mi14:47:483:27:169:5211:23
11:23
#22112
35K
21.75 mi14:55:173:34:459:527:29
10:00
#22081
23M
23.00 mi15:08:323:48:009:5513:15
10:35
#22037
24M
24.00 mi15:18:393:58:079:5510:07
10:07
#21996
40K
24.85 mi15:27:254:06:539:568:46
10:15
#21948
25.2M
25.20 mi15:31:194:10:479:573:54
11:19
#21937
Finish
26.22 mi15:41:184:20:469:579:59
9:48
#21912
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi218931304213042219791318113181
10K6.21 mi3.10 mi22459-56613355-31313355-313229571362213622
15K9.32 mi3.11 mi22317+14213299+5613299+56219791318113181
20K12.43 mi3.11 mi22237+8013261+3813261+38220471319713197
Half13.11 mi0.68 mi22242-513266-513266-5224341337513375
25K15.53 mi2.42 mi22197+4513239+2713239+27219431311713117
30K18.64 mi3.11 mi22143+5413205+3413205+34218911302713027
20M20.00 mi1.36 mi22141+213192+1313192+13222211309413094
21M21.00 mi1.00 mi22112+2913169+2313169+23216541282612826
35K21.75 mi0.75 mi22081+3113149+2013149+20212691261212612
23M23.00 mi1.25 mi22037+4413127+2213127+22215031269212692
24M24.00 mi1.00 mi21996+4113098+2913098+29211031247212472
40K24.85 mi0.85 mi21948+4813063+3513063+35206181220512205
25.2M25.20 mi0.35 mi21937+1113053+1013053+10211241244412444
Finish26.22 mi1.02 mi21912+2513034+1913034+19211331248712487

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

21979

Males

13181

M50-54

13181

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

22957

Males

13622

M50-54

13622

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

21979

Males

13181

M50-54

13181

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

22047

Males

13197

M50-54

13197

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22434

Males

13375

M50-54

13375

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

21943

Males

13117

M50-54

13117

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21891

Males

13027

M50-54

13027

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

22221

Males

13094

M50-54

13094

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

21654

Males

12826

M50-54

12826

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

21269

Males

12612

M50-54

12612

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

21503

Males

12692

M50-54

12692

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

21103

Males

12472

M50-54

12472

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20618

Males

12205

M50-54

12205

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

21124

Males

12444

M50-54

12444

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

21133

Males

12487

M50-54

12487

Passing Analysis

Category:
Athletes Passed
1204
Passed By
1223
Net Change
-19
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21893
5K → 10K65631-566#21893#22459
10K → 15K22583+142#22459#22317
15K → 20K17797+80#22317#22237
20K → Half1621-5#22237#22242
Half → 25K12782+45#22242#22197
25K → 30K155101+54#22197#22143
30K → 20M6664+2#22143#22141
20M → 21M6940+29#22141#22112
21M → 35K4211+31#22112#22081
35K → 23M7127+44#22081#22037
23M → 24M6322+41#22037#21996
24M → 40K6214+48#21996#21948
40K → 25.2M198+11#21948#21937
25.2M → Finish4722+25#21937#21912
TOTALS12041223-19

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