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BOSTON MARATHON 2023

Jonathan Den Hartog

Bib: 12916•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 23%
Gender (Male)
#0 / 15176
Top 36%
Masters (Masters Men)
#0 / 9891
Top 21%
Division (M45-49)
#0 / 2252
Top 27%
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
7:26/mi
23:07
↑ 97↓ 3451.5%
10K· 6.21 mi
6:56/mi
44:41
↑ 79↓ 1380.4%
15K· 9.32 mi
6:56/mi
1:06:15
↑ 67↓ 78
20K· 12.43 mi
7:15/mi
1:28:47
↑ 106↓ 860.1%
Half· 13.11 mi
7:07/mi
1:33:38
↑ 19↓ 370.5%
25K· 15.53 mi
7:13/mi
1:51:08
↑ 66↓ 880.2%
30K· 18.64 mi
7:18/mi
2:13:48
↑ 181↓ 1480.2%
20M
7:16/mi
2:23:40
↑ 64↓ 500.2%
21M
7:38/mi
2:31:18
↑ 106↓ 241.6%
35K· 21.75 mi
7:00/mi
2:36:32
↑ 17↓ 861.7%
23M
7:16/mi
2:45:38
↑ 23↓ 630.6%
24M
7:00/mi
2:52:38
↓ 821.3%
40K· 24.85 mi
7:01/mi
2:58:38
↓ 200.3%
25.2M
7:27/mi
3:01:12
↑ 13↓ 160.2%
Finish· 26.22 mi
7:02/mi
3:08:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:38
Pace7:09 /mi
2nd Half
Distance13.11 mi
Time1:34:44
Pace7:14 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0323:077:2623:07
7:26
-
10K
6.21 mi11:12:3744:417:1121:34
6:56
-0:30
15K
9.32 mi11:34:111:06:157:0621:34
6:56
0:00
20K
12.43 mi11:56:431:28:477:0922:32
7:15
+0:19
Half
13.11 mi12:01:341:33:387:094:51
7:07
-0:08
25K
15.53 mi12:19:041:51:087:0917:30
7:13
+0:06
30K
18.64 mi12:41:442:13:487:1122:40
7:18
+0:05
20M
20.00 mi12:51:362:23:407:119:52
7:16
-0:02
21M
21.00 mi12:59:142:31:187:127:38
7:38
+0:22
35K
21.75 mi13:04:282:36:327:125:14
7:00
-0:38
23M
23.00 mi13:13:342:45:387:129:06
7:16
+0:16
24M
24.00 mi13:20:342:52:387:127:00
7:00
-0:16
40K
24.85 mi13:26:342:58:387:116:00
7:01
+0:01
25.2M
25.20 mi13:29:083:01:127:112:34
7:27
+0:26
Finish
26.22 mi13:36:183:08:227:117:10
7:02
-0:25

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

6:56 /mi

Average Pace

7:11 /mi

Slowest Pace

7:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:00:44

96% of race

Time at Steady Pace

7:38

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:11 /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 mi10:51:0323:077:2623:07
7:26
#9123
10K
6.21 mi11:12:3744:417:1121:34
6:56
#7693
15K
9.32 mi11:34:111:06:157:0621:34
6:56
#7156
20K
12.43 mi11:56:431:28:477:0922:32
7:15
#7184
Half
13.11 mi12:01:341:33:387:094:51
7:07
#7182
25K
15.53 mi12:19:041:51:087:0917:30
7:13
#7079
30K
18.64 mi12:41:442:13:487:1122:40
7:18
#6855
20M
20.00 mi12:51:362:23:407:119:52
7:16
#6727
21M
21.00 mi12:59:142:31:187:127:38
7:38
#6615
35K
21.75 mi13:04:282:36:327:125:14
7:00
#6531
23M
23.00 mi13:13:342:45:387:129:06
7:16
#6415
24M
24.00 mi13:20:342:52:387:127:00
7:00
#6273
40K
24.85 mi13:26:342:58:387:116:00
7:01
#6153
25.2M
25.20 mi13:29:083:01:127:112:34
7:27
#6094
Finish
26.22 mi13:36:183:08:227:117:10
7:02
#6027
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9123766976696209(Top 23%)5628(Top 37%)5628(Top 250%)
10K6.21 mi3.10 mi7693+14306766+9036766+9036422(Top 24%)5795(Top 38%)5795(Top 257%)
15K9.32 mi3.11 mi7156+5376371+3956371+3956209(Top 23%)5628(Top 37%)5628(Top 250%)
20K12.43 mi3.11 mi7184-286382-116382-117437(Top 28%)6514(Top 43%)6514(Top 289%)
Half13.11 mi0.68 mi7182+2638263827150(Top 27%)6319(Top 42%)6319(Top 281%)
25K15.53 mi2.42 mi7079+1036291+916291+916755(Top 25%)5972(Top 39%)5972(Top 265%)
30K18.64 mi3.11 mi6855+2246102+1896102+1895996(Top 23%)5362(Top 35%)5362(Top 238%)
20M20.00 mi1.36 mi6727+1285998+1045998+1045436(Top 20%)4875(Top 32%)4875(Top 216%)
21M21.00 mi1.00 mi6615+1125896+1025896+1025277(Top 20%)4673(Top 31%)4673(Top 208%)
35K21.75 mi0.75 mi6531+845830+665830+665319(Top 20%)4747(Top 31%)4747(Top 211%)
23M23.00 mi1.25 mi6415+1165733+975733+975144(Top 19%)4571(Top 30%)4571(Top 203%)
24M24.00 mi1.00 mi6273+1425618+1155618+1154685(Top 18%)4199(Top 28%)4199(Top 186%)
40K24.85 mi0.85 mi6153+1205514+1045514+1043951(Top 15%)3554(Top 23%)3554(Top 158%)
25.2M25.20 mi0.35 mi6094+595465+495465+493678(Top 14%)3306(Top 22%)3306(Top 147%)
Finish26.22 mi1.02 mi6027+675402+635402+635391(Top 20%)4530(Top 30%)4530(Top 201%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6209

Males

5628

M45-49

5628

5K→10K

3.1 - 6.2 mi

Top 24%
×5story building
+79ft-138ft

Overall

6422

Males

5795

M45-49

5795

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6209

Males

5628

M45-49

5628

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7437

Males

6514

M45-49

6514

20K→Half

12.4 - 13.1 mi

Top 27%
×2story building
+19ft-37ft

Overall

7150

Males

6319

M45-49

6319

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6755

Males

5972

M45-49

5972

25K→30K

15.5 - 18.6 mi

Top 23%
×9story building
+181ft-148ft

Overall

5996

Males

5362

M45-49

5362

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5436

Males

4875

M45-49

4875

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5277

Males

4673

M45-49

4673

21M→35K

21.0 - 21.8 mi

Top 20%
×7story building
+17ft-86ft

Overall

5319

Males

4747

M45-49

4747

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5144

Males

4571

M45-49

4571

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4685

Males

4199

M45-49

4199

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

3951

Males

3554

M45-49

3554

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3678

Males

3306

M45-49

3306

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5391

Males

4530

M45-49

4530

Passing Analysis

Category:
Athletes Passed
3405
Passed By
309
Net Change
+3096
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9123
5K → 10K144010+1430#9123#7693
10K → 15K5469+537#7693#7156
15K → 20K104132-28#7156#7184
20K → Half1715+2#7184#7182
Half → 25K14037+103#7182#7079
25K → 30K25127+224#7079#6855
30K → 20M14113+128#6855#6727
20M → 21M12311+112#6727#6615
21M → 35K939+84#6615#6531
35K → 23M13317+116#6531#6415
23M → 24M1464+142#6415#6273
24M → 40K1244+120#6273#6153
40K → 25.2M601+59#6153#6094
25.2M → Finish8720+67#6094#6027
TOTALS3405309+3096
📊

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