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BOSTON MARATHON 2023

Michiel Arnouts

Bib: 31834•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Male)
#0 / 15176
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
8:29/mi
26:21
↑ 97↓ 3451.5%
10K· 6.21 mi
7:43/mi
50:20
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:13:49
↑ 67↓ 78
20K· 12.43 mi
8:38/mi
1:40:39
↑ 106↓ 860.1%
Half· 13.11 mi
7:14/mi
1:45:35
↑ 19↓ 370.5%
25K· 15.53 mi
7:33/mi
2:03:53
↑ 66↓ 880.2%
30K· 18.64 mi
7:43/mi
2:27:51
↑ 181↓ 1480.2%
20M
7:47/mi
2:38:26
↑ 64↓ 500.2%
21M
8:14/mi
2:46:40
↑ 106↓ 241.6%
35K· 21.75 mi
7:46/mi
2:52:29
↑ 17↓ 861.7%
23M
7:59/mi
3:02:29
↑ 23↓ 630.6%
24M
7:43/mi
3:10:12
↓ 821.3%
40K· 24.85 mi
7:50/mi
3:16:54
↓ 200.3%
25.2M
8:30/mi
3:19:50
↑ 13↓ 160.2%
Finish· 26.22 mi
7:53/mi
3:27:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:45:35
Pace8:03 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:42:17
Pace7:48 /mi
📊Negative Split: 3.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:2026:218:2926:21
8:29
-
10K
6.21 mi12:10:1950:208:0623:59
7:43
-0:46
15K
9.32 mi12:33:481:13:497:5523:29
7:34
-0:09
20K
12.43 mi13:00:381:40:398:0626:50
8:38
+1:04
Half
13.11 mi13:05:341:45:358:034:56
7:14
-1:24
25K
15.53 mi13:23:522:03:537:5818:18
7:33
+0:19
30K
18.64 mi13:47:502:27:517:5623:58
7:43
+0:10
20M
20.00 mi13:58:252:38:267:5510:35
7:47
+0:04
21M
21.00 mi14:06:392:46:407:568:14
8:14
+0:27
35K
21.75 mi14:12:282:52:297:565:49
7:46
-0:28
23M
23.00 mi14:22:283:02:297:5610:00
7:59
+0:13
24M
24.00 mi14:30:113:10:127:567:43
7:43
-0:16
40K
24.85 mi14:36:533:16:547:556:42
7:50
+0:07
25.2M
25.20 mi14:39:493:19:507:562:56
8:30
+0:40
Finish
26.22 mi14:47:513:27:527:568:02
7:53
-0:37

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

7:14 /mi

Average Pace

7:56 /mi

Slowest Pace

8:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:31

64% of race

Time at Steady Pace

47:31

23% of race

Time at Slower Pace

26:50

13% of race

Average Pace: 7:56 /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 mi11:46:2026:218:2926:21
8:29
#17411
10K
6.21 mi12:10:1950:208:0623:59
7:43
#15120
15K
9.32 mi12:33:481:13:497:5523:29
7:34
#13731
20K
12.43 mi13:00:381:40:398:0626:50
8:38
#14855
Half
13.11 mi13:05:341:45:358:034:56
7:14
#14523
25K
15.53 mi13:23:522:03:537:5818:18
7:33
#13671
30K
18.64 mi13:47:502:27:517:5623:58
7:43
#12741
20M
20.00 mi13:58:252:38:267:5510:35
7:47
#12391
21M
21.00 mi14:06:392:46:407:568:14
8:14
#12145
35K
21.75 mi14:12:282:52:297:565:49
7:46
#12078
23M
23.00 mi14:22:283:02:297:5610:00
7:59
#11919
24M
24.00 mi14:30:113:10:127:567:43
7:43
#11786
40K
24.85 mi14:36:533:16:547:556:42
7:50
#11666
25.2M
25.20 mi14:39:493:19:507:562:56
8:30
#11613
Finish
26.22 mi14:47:513:27:527:568:02
7:53
#11578
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17411111871118710647(Top 40%)8475(Top 56%)8475(Top 160%)
10K6.21 mi3.10 mi15120+229110376+81110376+81112415(Top 47%)9295(Top 61%)9295(Top 176%)
15K9.32 mi3.11 mi13731+13899810+5669810+56610647(Top 40%)8475(Top 56%)8475(Top 160%)
20K12.43 mi3.11 mi14855-112410245-43510245-43517705(Top 67%)11336(Top 75%)11336(Top 214%)
Half13.11 mi0.68 mi14523+33210123+12210123+1228106(Top 30%)6978(Top 46%)6978(Top 132%)
25K15.53 mi2.42 mi13671+8529740+3839740+3839136(Top 34%)7521(Top 50%)7521(Top 142%)
30K18.64 mi3.11 mi12741+9309326+4149326+4148747(Top 33%)7129(Top 47%)7129(Top 135%)
20M20.00 mi1.36 mi12391+3509163+1639163+1638770(Top 33%)7068(Top 47%)7068(Top 134%)
21M21.00 mi1.00 mi12145+2469035+1289035+1288808(Top 33%)6963(Top 46%)6963(Top 132%)
35K21.75 mi0.75 mi12078+678986+498986+4910461(Top 39%)7866(Top 52%)7866(Top 149%)
23M23.00 mi1.25 mi11919+1598893+938893+939646(Top 36%)7319(Top 48%)7319(Top 138%)
24M24.00 mi1.00 mi11786+1338827+668827+669194(Top 35%)6997(Top 46%)6997(Top 132%)
40K24.85 mi0.85 mi11666+1208750+778750+778905(Top 33%)6767(Top 45%)6767(Top 128%)
25.2M25.20 mi0.35 mi11613+538714+368714+369540(Top 36%)7066(Top 47%)7066(Top 134%)
Finish26.22 mi1.02 mi11578+358664+508664+5011266(Top 42%)7923(Top 52%)7923(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10647

Males

8475

M18-39

8475

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

12415

Males

9295

M18-39

9295

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10647

Males

8475

M18-39

8475

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17705

Males

11336

M18-39

11336

20K→Half

12.4 - 13.1 mi

Top 30%
×2story building
+19ft-37ft

Overall

8106

Males

6978

M18-39

6978

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9136

Males

7521

M18-39

7521

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

8747

Males

7129

M18-39

7129

30K→20M

18.6 - 20.0 mi

Top 33%
×5story building
+64ft-50ft

Overall

8770

Males

7068

M18-39

7068

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

8808

Males

6963

M18-39

6963

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

10461

Males

7866

M18-39

7866

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9646

Males

7319

M18-39

7319

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9194

Males

6997

M18-39

6997

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8905

Males

6767

M18-39

6767

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9540

Males

7066

M18-39

7066

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11266

Males

7923

M18-39

7923

Passing Analysis

Category:
Athletes Passed
7156
Passed By
1323
Net Change
+5833
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17411
5K → 10K230716+2291#17411#15120
10K → 15K13890+1389#15120#13731
15K → 20K311155-1124#13731#14855
20K → Half3320+332#14855#14523
Half → 25K8520+852#14523#13671
25K → 30K9333+930#13671#12741
30K → 20M3522+350#12741#12391
20M → 21M2559+246#12391#12145
21M → 35K8316+67#12145#12078
35K → 23M18324+159#12078#11919
23M → 24M15219+133#11919#11786
24M → 40K13010+120#11786#11666
40K → 25.2M6310+53#11666#11613
25.2M → Finish9459+35#11613#11578
TOTALS71561323+5833
📊

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