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BOSTON MARATHON 2023

Jeroen Schroer

Bib: 12978•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 32%
Gender (Male)
#0 / 15176
Top 46%
Masters (Masters Men)
#0 / 9891
Top 34%
Division (M50-54)
#0 / 2052
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:27
Rank: #10043
Start → 5K
23:27 | 7:33/mi
10K· 6.21 mi
46:14
Rank: #9497 (+546)
5K → 10K
22:47 | 7:20/mi
15K· 9.32 mi
1:09:18
Rank: #9476 (+21)
10K → 15K
23:04 | 7:25/mi
20K· 12.43 mi
1:32:52
Rank: #9584 (-108)
15K → 20K
23:34 | 7:35/mi
Half· 13.11 mi
1:37:58
Rank: #9606 (-22)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:56:16
Rank: #9508 (+98)
Half → 25K
18:18 | 7:33/mi
30K· 18.64 mi
2:20:09
Rank: #9297 (+211)
25K → 30K
23:53 | 7:41/mi
20M
2:30:42
Rank: #9234 (+63)
30K → 20M
10:33 | 7:46/mi
21M
2:38:49
Rank: #9121 (+113)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:44:12
Rank: #9010 (+111)
21M → 35K
5:23 | 7:12/mi
23M
2:53:36
Rank: #8837 (+173)
35K → 23M
9:24 | 7:30/mi
24M
3:00:53
Rank: #8697 (+140)
23M → 24M
7:17 | 7:17/mi
40K· 24.85 mi
3:07:17
Rank: #8591 (+106)
24M → 40K
6:24 | 7:29/mi
25.2M
3:10:03
Rank: #8542 (+49)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:17:28
Rank: #8452 (+90)
25.2M → Finish
7:25 | 7:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:58
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:39:30
Pace7:35 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5323:277:3323:27
7:33
-
10K
6.21 mi11:13:4046:147:2622:47
7:20
-0:13
15K
9.32 mi11:36:441:09:187:2623:04
7:25
+0:05
20K
12.43 mi12:00:181:32:527:2823:34
7:35
+0:10
Half
13.11 mi12:05:241:37:587:285:06
7:29
-0:06
25K
15.53 mi12:23:421:56:167:2918:18
7:33
+0:04
30K
18.64 mi12:47:352:20:097:3123:53
7:41
+0:08
20M
20.00 mi12:58:082:30:427:3210:33
7:46
+0:05
21M
21.00 mi13:06:152:38:497:348:07
8:07
+0:21
35K
21.75 mi13:11:382:44:127:335:23
7:12
-0:55
23M
23.00 mi13:21:022:53:367:339:24
7:30
+0:18
24M
24.00 mi13:28:193:00:537:327:17
7:17
-0:13
40K
24.85 mi13:34:433:07:177:326:24
7:29
+0:12
25.2M
25.20 mi13:37:293:10:037:332:46
8:01
+0:32
Finish
26.22 mi13:44:543:17:287:327:25
7:17
-0:44

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

7:12 /mi

Average Pace

7:32 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:35

94% of race

Time at Steady Pace

10:53

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:32 /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 mi10:50:5323:277:3323:27
7:33
#10043
10K
6.21 mi11:13:4046:147:2622:47
7:20
#9497
15K
9.32 mi11:36:441:09:187:2623:04
7:25
#9476
20K
12.43 mi12:00:181:32:527:2823:34
7:35
#9584
Half
13.11 mi12:05:241:37:587:285:06
7:29
#9606
25K
15.53 mi12:23:421:56:167:2918:18
7:33
#9508
30K
18.64 mi12:47:352:20:097:3123:53
7:41
#9297
20M
20.00 mi12:58:082:30:427:3210:33
7:46
#9234
21M
21.00 mi13:06:152:38:497:348:07
8:07
#9121
35K
21.75 mi13:11:382:44:127:335:23
7:12
#9010
23M
23.00 mi13:21:022:53:367:339:24
7:30
#8837
24M
24.00 mi13:28:193:00:537:327:17
7:17
#8697
40K
24.85 mi13:34:433:07:177:326:24
7:29
#8591
25.2M
25.20 mi13:37:293:10:037:332:46
8:01
#8542
Finish
26.22 mi13:44:543:17:287:327:25
7:17
#8452
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi10043814781479547(Top 36%)7890(Top 52%)7890(Top 385%)
10K6.21 mi3.10 mi9497+5467875+2727875+2729090(Top 34%)7630(Top 50%)7630(Top 372%)
15K9.32 mi3.11 mi9476+217857+187857+189547(Top 36%)7890(Top 52%)7890(Top 385%)
20K12.43 mi3.11 mi9584-1087908-517908-519960(Top 37%)8047(Top 53%)8047(Top 392%)
Half13.11 mi0.68 mi9606-227926-187926-189942(Top 37%)8052(Top 53%)8052(Top 392%)
25K15.53 mi2.42 mi9508+987845+817845+819120(Top 34%)7505(Top 49%)7505(Top 366%)
30K18.64 mi3.11 mi9297+2117680+1657680+1658538(Top 32%)7006(Top 46%)7006(Top 341%)
20M20.00 mi1.36 mi9234+637615+657615+658562(Top 32%)6929(Top 46%)6929(Top 338%)
21M21.00 mi1.00 mi9121+1137527+887527+888099(Top 30%)6535(Top 43%)6535(Top 318%)
35K21.75 mi0.75 mi9010+1117453+747453+746512(Top 24%)5592(Top 37%)5592(Top 273%)
23M23.00 mi1.25 mi8837+1737322+1317322+1316466(Top 24%)5488(Top 36%)5488(Top 267%)
24M24.00 mi1.00 mi8697+1407217+1057217+1056271(Top 24%)5268(Top 35%)5268(Top 257%)
40K24.85 mi0.85 mi8591+1067136+817136+816630(Top 25%)5418(Top 36%)5418(Top 264%)
25.2M25.20 mi0.35 mi8542+497100+367100+366628(Top 25%)5354(Top 35%)5354(Top 261%)
Finish26.22 mi1.02 mi8452+907019+817019+816953(Top 26%)5536(Top 36%)5536(Top 270%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9547

Males

7890

M50-54

7890

5K→10K

3.1 - 6.2 mi

Top 34%
×5stories
+79ft-138ft

Overall

9090

Males

7630

M50-54

7630

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9547

Males

7890

M50-54

7890

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9960

Males

8047

M50-54

8047

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9942

Males

8052

M50-54

8052

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9120

Males

7505

M50-54

7505

25K→30K

15.5 - 18.6 mi

Top 32%
×9stories
+181ft-148ft

Overall

8538

Males

7006

M50-54

7006

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8562

Males

6929

M50-54

6929

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8099

Males

6535

M50-54

6535

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6512

Males

5592

M50-54

5592

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6466

Males

5488

M50-54

5488

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6271

Males

5268

M50-54

5268

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6630

Males

5418

M50-54

5418

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6628

Males

5354

M50-54

5354

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

6953

Males

5536

M50-54

5536

Passing Analysis

Category:
Athletes Passed
2362*
Passed By
771
Net Change
+1591
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10043
5K → 10K648*102+546#10043#9497
10K → 15K171150+21#9497#9476
15K → 20K109217-108#9476#9584
20K → Half1941-22#9584#9606
Half → 25K16466+98#9606#9508
25K → 30K283*72+211#9508#9297
30K → 20M10441+63#9297#9234
20M → 21M13623+113#9234#9121
21M → 35K1132+111#9121#9010
35K → 23M18512+173#9010#8837
23M → 24M1444+140#8837#8697
24M → 40K11812+106#8697#8591
40K → 25.2M567+49#8591#8542
25.2M → Finish11222+90#8542#8452
TOTALS2362*771+1591

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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