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BOSTON MARATHON 2023

Jaco Pietersen

Bib: 8234•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 26%
Masters (Masters Men)
#0 / 9891
Top 12%
Division (M40-44)
#0 / 2241
Top 31%
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
6:41/mi
20:47
↑ 97↓ 3451.5%
10K· 6.21 mi
6:37/mi
41:20
↑ 79↓ 1380.4%
15K· 9.32 mi
6:45/mi
1:02:17
↑ 67↓ 78
20K· 12.43 mi
6:47/mi
1:23:23
↑ 106↓ 860.1%
Half· 13.11 mi
6:42/mi
1:27:57
↑ 19↓ 370.5%
25K· 15.53 mi
6:45/mi
1:44:19
↑ 66↓ 880.2%
30K· 18.64 mi
6:59/mi
2:06:01
↑ 181↓ 1480.2%
20M
6:59/mi
2:15:30
↑ 64↓ 500.2%
21M
7:33/mi
2:23:03
↑ 106↓ 241.6%
35K· 21.75 mi
6:57/mi
2:28:15
↑ 17↓ 861.7%
23M
7:06/mi
2:37:09
↑ 23↓ 630.6%
24M
6:53/mi
2:44:02
↓ 821.3%
40K· 24.85 mi
7:10/mi
2:50:10
↓ 200.3%
25.2M
7:56/mi
2:52:54
↑ 13↓ 160.2%
Finish· 26.22 mi
6:54/mi
2:59:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:57
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:31:59
Pace7:01 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:5620:476:4120:47
6:41
-
10K
6.21 mi11:06:2941:206:3920:33
6:37
-0:04
15K
9.32 mi11:27:261:02:176:4120:57
6:45
+0:08
20K
12.43 mi11:48:321:23:236:4321:06
6:47
+0:02
Half
13.11 mi11:53:061:27:576:434:34
6:42
-0:05
25K
15.53 mi12:09:281:44:196:4316:22
6:45
+0:03
30K
18.64 mi12:31:102:06:016:4621:42
6:59
+0:14
20M
20.00 mi12:40:392:15:306:469:29
6:59
0:00
21M
21.00 mi12:48:122:23:036:497:33
7:33
+0:34
35K
21.75 mi12:53:242:28:156:495:12
6:57
-0:36
23M
23.00 mi13:02:182:37:096:508:54
7:06
+0:09
24M
24.00 mi13:09:112:44:026:506:53
6:53
-0:13
40K
24.85 mi13:15:192:50:106:516:08
7:10
+0:17
25.2M
25.20 mi13:18:032:52:546:522:44
7:56
+0:46
Finish
26.22 mi13:25:052:59:566:527:02
6:54
-1:02

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

6:37 /mi

Average Pace

6:52 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:39

94% of race

Time at Steady Pace

7:33

4% of race

Time at Slower Pace

2:44

2% 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 mi10:45:5620:476:4120:47
6:41
#3587
10K
6.21 mi11:06:2941:206:3920:33
6:37
#3555
15K
9.32 mi11:27:261:02:176:4120:57
6:45
#3848
20K
12.43 mi11:48:321:23:236:4321:06
6:47
#3965
Half
13.11 mi11:53:061:27:576:434:34
6:42
#3970
25K
15.53 mi12:09:281:44:196:4316:22
6:45
#3913
30K
18.64 mi12:31:102:06:016:4621:42
6:59
#3953
20M
20.00 mi12:40:392:15:306:469:29
6:59
#3919
21M
21.00 mi12:48:122:23:036:497:33
7:33
#3977
35K
21.75 mi12:53:242:28:156:495:12
6:57
#4025
23M
23.00 mi13:02:182:37:096:508:54
7:06
#4046
24M
24.00 mi13:09:112:44:026:506:53
6:53
#4041
40K
24.85 mi13:15:192:50:106:516:08
7:10
#4085
25.2M
25.20 mi13:18:032:52:546:522:44
7:56
#4130
Finish
26.22 mi13:25:052:59:566:527:02
6:54
#4177
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3587338033804535(Top 17%)4234(Top 28%)4234(Top 189%)
10K6.21 mi3.10 mi3555+323356+243356+243604(Top 14%)3404(Top 22%)3404(Top 152%)
15K9.32 mi3.11 mi3848-2933626-2703626-2704535(Top 17%)4234(Top 28%)4234(Top 189%)
20K12.43 mi3.11 mi3965-1173731-1053731-1054363(Top 16%)4073(Top 27%)4073(Top 182%)
Half13.11 mi0.68 mi3970-53734-33734-34270(Top 16%)3994(Top 26%)3994(Top 178%)
25K15.53 mi2.42 mi3913+573685+493685+493759(Top 14%)3539(Top 23%)3539(Top 158%)
30K18.64 mi3.11 mi3953-403724-393724-394245(Top 16%)3955(Top 26%)3955(Top 176%)
20M20.00 mi1.36 mi3919+343691+333691+333907(Top 15%)3635(Top 24%)3635(Top 162%)
21M21.00 mi1.00 mi3977-583738-473738-474802(Top 18%)4329(Top 29%)4329(Top 193%)
35K21.75 mi0.75 mi4025-483777-393777-395031(Top 19%)4506(Top 30%)4506(Top 201%)
23M23.00 mi1.25 mi4046-213792-153792-154330(Top 16%)3949(Top 26%)3949(Top 176%)
24M24.00 mi1.00 mi4041+53786+63786+64092(Top 15%)3723(Top 25%)3723(Top 166%)
40K24.85 mi0.85 mi4085-443822-363822-364722(Top 18%)4149(Top 27%)4149(Top 185%)
25.2M25.20 mi0.35 mi4130-453866-443866-445974(Top 22%)4905(Top 32%)4905(Top 219%)
Finish26.22 mi1.02 mi4177-473905-393905-394616(Top 17%)4005(Top 26%)4005(Top 179%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21story building
+97ft-345ft

Overall

4535

Males

4234

M40-44

4234

5K→10K

3.1 - 6.2 mi

Top 14%
×5story building
+79ft-138ft

Overall

3604

Males

3404

M40-44

3404

10K→15K

6.2 - 9.3 mi

Top 17%
×3story building
+67ft-78ft

Overall

4535

Males

4234

M40-44

4234

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4363

Males

4073

M40-44

4073

20K→Half

12.4 - 13.1 mi

Top 16%
×2story building
+19ft-37ft

Overall

4270

Males

3994

M40-44

3994

Half→25K

13.1 - 15.5 mi

Top 14%
×4story building
+66ft-88ft

Overall

3759

Males

3539

M40-44

3539

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4245

Males

3955

M40-44

3955

30K→20M

18.6 - 20.0 mi

Top 15%
×5story building
+64ft-50ft

Overall

3907

Males

3635

M40-44

3635

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

4802

Males

4329

M40-44

4329

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5031

Males

4506

M40-44

4506

35K→23M

21.8 - 23.0 mi

Top 16%
×5story building
+23ft-63ft

Overall

4330

Males

3949

M40-44

3949

23M→24M

23.0 - 24.0 mi

Top 15%
×6story building
+12ft-82ft

Overall

4092

Males

3723

M40-44

3723

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4722

Males

4149

M40-44

4149

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5974

Males

4905

M40-44

4905

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2story building
+22ft-21ft

Overall

4616

Males

4005

M40-44

4005

Passing Analysis

Category:
Athletes Passed
879
Passed By
1469
Net Change
-590
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3587
5K → 10K202170+32#3587#3555
10K → 15K39332-293#3555#3848
15K → 20K76193-117#3848#3965
20K → Half1722-5#3965#3970
Half → 25K10649+57#3970#3913
25K → 30K98138-40#3913#3953
30K → 20M8046+34#3953#3919
20M → 21M50108-58#3919#3977
21M → 35K2674-48#3977#4025
35K → 23M5071-21#4025#4046
23M → 24M5651+5#4046#4041
24M → 40K3781-44#4041#4085
40K → 25.2M1257-45#4085#4130
25.2M → Finish3077-47#4130#4177
TOTALS8791469-590
📊

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