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BOSTON MARATHON 2023

Steven Janssens

Bib: 10865•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 27%
Gender (Male)
#0 / 15176
Top 41%
Masters (Masters Men)
#0 / 9891
Top 27%
Division (M45-49)
#0 / 2252
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:13
Rank: #4959
Start → 5K
21:13 | 6:50/mi
10K· 6.21 mi
42:07
Rank: #4781 (+178)
5K → 10K
20:54 | 6:44/mi
15K· 9.32 mi
1:03:16
Rank: #4884 (-103)
10K → 15K
21:09 | 6:48/mi
20K· 12.43 mi
1:24:32
Rank: #4873 (+11)
15K → 20K
21:16 | 6:51/mi
Half· 13.11 mi
1:29:09
Rank: #4870 (+3)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:46:01
Rank: #4942 (-72)
Half → 25K
16:52 | 6:57/mi
30K· 18.64 mi
2:09:07
Rank: #5381 (-439)
25K → 30K
23:06 | 7:26/mi
20M
2:19:48
Rank: #5594 (-213)
30K → 20M
10:41 | 7:52/mi
21M
2:28:22
Rank: #5797 (-203)
20M → 21M
8:34 | 8:34/mi
35K· 21.75 mi
2:34:20
Rank: #5930 (-133)
21M → 35K
5:58 | 7:59/mi
23M
2:44:46
Rank: #6190 (-260)
35K → 23M
10:26 | 8:20/mi
24M
2:53:25
Rank: #6497 (-307)
23M → 24M
8:39 | 8:39/mi
40K· 24.85 mi
3:01:02
Rank: #6743 (-246)
24M → 40K
7:37 | 8:54/mi
25.2M
3:04:19
Rank: #6852 (-109)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:13:06
Rank: #7185 (-333)
25.2M → Finish
8:47 | 8:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:09
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:43:57
Pace7:56 /mi
📊Positive Split: 16.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3521:136:5021:13
6:50
-
10K
6.21 mi11:08:2942:076:4720:54
6:44
-0:06
15K
9.32 mi11:29:381:03:166:4721:09
6:48
+0:04
20K
12.43 mi11:50:541:24:326:4821:16
6:51
+0:03
Half
13.11 mi11:55:311:29:096:484:37
6:46
-0:05
25K
15.53 mi12:12:231:46:016:4916:52
6:57
+0:11
30K
18.64 mi12:35:292:09:076:5623:06
7:26
+0:29
20M
20.00 mi12:46:102:19:486:5910:41
7:52
+0:26
21M
21.00 mi12:54:442:28:227:048:34
8:34
+0:42
35K
21.75 mi13:00:422:34:207:065:58
7:59
-0:35
23M
23.00 mi13:11:082:44:467:1010:26
8:20
+0:21
24M
24.00 mi13:19:472:53:257:148:39
8:39
+0:19
40K
24.85 mi13:27:243:01:027:177:37
8:54
+0:15
25.2M
25.20 mi13:30:413:04:197:193:17
9:31
+0:37
Finish
26.22 mi13:39:283:13:067:228:47
8:37
-0:54

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

6:44 /mi

Average Pace

7:22 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:01

55% of race

Time at Steady Pace

39:45

21% of race

Time at Slower Pace

47:20

25% of race

Average Pace: 7:22 /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 mi10:47:3521:136:5021:13
6:50
#4959
10K
6.21 mi11:08:2942:076:4720:54
6:44
#4781
15K
9.32 mi11:29:381:03:166:4721:09
6:48
#4884
20K
12.43 mi11:50:541:24:326:4821:16
6:51
#4873
Half
13.11 mi11:55:311:29:096:484:37
6:46
#4870
25K
15.53 mi12:12:231:46:016:4916:52
6:57
#4942
30K
18.64 mi12:35:292:09:076:5623:06
7:26
#5381
20M
20.00 mi12:46:102:19:486:5910:41
7:52
#5594
21M
21.00 mi12:54:442:28:227:048:34
8:34
#5797
35K
21.75 mi13:00:422:34:207:065:58
7:59
#5930
23M
23.00 mi13:11:082:44:467:1010:26
8:20
#6190
24M
24.00 mi13:19:472:53:257:148:39
8:39
#6497
40K
24.85 mi13:27:243:01:027:177:37
8:54
#6743
25.2M
25.20 mi13:30:413:04:197:193:17
9:31
#6852
Finish
26.22 mi13:39:283:13:067:228:47
8:37
#7185
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4959460546055218(Top 20%)4826(Top 32%)4826(Top 214%)
10K6.21 mi3.10 mi4781+1784450+1554450+1554625(Top 17%)4313(Top 28%)4313(Top 192%)
15K9.32 mi3.11 mi4884-1034543-934543-935218(Top 20%)4826(Top 32%)4826(Top 214%)
20K12.43 mi3.11 mi4873+114538+54538+54885(Top 18%)4537(Top 30%)4537(Top 201%)
Half13.11 mi0.68 mi4870+34535+34535+35048(Top 19%)4680(Top 31%)4680(Top 208%)
25K15.53 mi2.42 mi4942-724594-594594-595343(Top 20%)4925(Top 32%)4925(Top 219%)
30K18.64 mi3.11 mi5381-4394964-3704964-3706802(Top 26%)5933(Top 39%)5933(Top 263%)
20M20.00 mi1.36 mi5594-2135136-1725136-1729277(Top 35%)7337(Top 48%)7337(Top 326%)
21M21.00 mi1.00 mi5797-2035288-1525288-15210817(Top 41%)8014(Top 53%)8014(Top 356%)
35K21.75 mi0.75 mi5930-1335380-925380-9211873(Top 45%)8484(Top 56%)8484(Top 377%)
23M23.00 mi1.25 mi6190-2605569-1895569-18912092(Top 45%)8501(Top 56%)8501(Top 377%)
24M24.00 mi1.00 mi6497-3075782-2135782-21315336(Top 58%)9873(Top 65%)9873(Top 438%)
40K24.85 mi0.85 mi6743-2465936-1545936-15415618(Top 59%)9944(Top 66%)9944(Top 442%)
25.2M25.20 mi0.35 mi6852-1096007-716007-7115192(Top 57%)9733(Top 64%)9733(Top 432%)
Finish26.22 mi1.02 mi7185-3336200-1936200-19316055(Top 60%)10184(Top 67%)10184(Top 452%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5218

Males

4826

M45-49

4826

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4625

Males

4313

M45-49

4313

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5218

Males

4826

M45-49

4826

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4885

Males

4537

M45-49

4537

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5048

Males

4680

M45-49

4680

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5343

Males

4925

M45-49

4925

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

6802

Males

5933

M45-49

5933

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9277

Males

7337

M45-49

7337

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10817

Males

8014

M45-49

8014

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

11873

Males

8484

M45-49

8484

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12092

Males

8501

M45-49

8501

23M→24M

23.0 - 24.0 mi

Top 58%
×6stories
+12ft-82ft

Overall

15336

Males

9873

M45-49

9873

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15618

Males

9944

M45-49

9944

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15192

Males

9733

M45-49

9733

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

16055

Males

10184

M45-49

10184

Passing Analysis

Category:
Athletes Passed
746
Passed By
2972
Net Change
-2226
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4959
5K → 10K303125+178#4959#4781
10K → 15K77180-103#4781#4884
15K → 20K10998+11#4884#4873
20K → Half2623+3#4873#4870
Half → 25K82154-72#4870#4942
25K → 30K40479-439#4942#5381
30K → 20M20233-213#5381#5594
20M → 21M16219-203#5594#5797
21M → 35K9142-133#5797#5930
35K → 23M17277-260#5930#6190
23M → 24M15322-307#6190#6497
24M → 40K15261-246#6497#6743
40K → 25.2M8117-109#6743#6852
25.2M → Finish9342-333#6852#7185
TOTALS7462972-2226
📊

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