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BOSTON MARATHON 2023

Rene Mertens

Bib: 22471•M

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:01
Rank: #18845
Start → 5K
27:01 | 8:42/mi
10K· 6.21 mi
53:55
Rank: #18978 (-133)
5K → 10K
26:54 | 8:39/mi
15K· 9.32 mi
1:20:28
Rank: #18652 (+326)
10K → 15K
26:33 | 8:33/mi
20K· 12.43 mi
1:47:34
Rank: #18544 (+108)
15K → 20K
27:06 | 8:43/mi
Half· 13.11 mi
1:53:26
Rank: #18535 (+9)
20K → Half
5:52 | 8:36/mi
25K· 15.53 mi
2:15:20
Rank: #18641 (-106)
Half → 25K
21:54 | 9:02/mi
30K· 18.64 mi
2:46:16
Rank: #19206 (-565)
25K → 30K
30:56 | 9:57/mi
20M
3:00:28
Rank: #19468 (-262)
30K → 20M
14:12 | 10:27/mi
21M
3:12:50
Rank: #19870 (-402)
20M → 21M
12:22 | 12:22/mi
35K· 21.75 mi
3:20:13
Rank: #19924 (-54)
21M → 35K
7:23 | 9:52/mi
23M
3:33:25
Rank: #20051 (-127)
35K → 23M
13:12 | 10:33/mi
24M
3:43:27
Rank: #20106 (-55)
23M → 24M
10:02 | 10:02/mi
40K· 24.85 mi
3:52:50
Rank: #20208 (-102)
24M → 40K
9:23 | 10:58/mi
25.2M
3:56:46
Rank: #20226 (-18)
40K → 25.2M
3:56 | 11:24/mi
Finish· 26.22 mi
4:07:17
Rank: #20301 (-75)
25.2M → Finish
10:31 | 10:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:26
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time2:13:51
Pace10:13 /mi
📊Positive Split: 18.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:5627:018:4227:01
8:42
-
10K
6.21 mi11:47:5053:558:4126:54
8:39
-0:03
15K
9.32 mi12:14:231:20:288:3826:33
8:33
-0:06
20K
12.43 mi12:41:291:47:348:3927:06
8:43
+0:10
Half
13.11 mi12:47:211:53:268:395:52
8:36
-0:07
25K
15.53 mi13:09:152:15:208:4321:54
9:02
+0:26
30K
18.64 mi13:40:112:46:168:5530:56
9:57
+0:55
20M
20.00 mi13:54:233:00:289:0114:12
10:27
+0:30
21M
21.00 mi14:06:453:12:509:1112:22
12:22
+1:55
35K
21.75 mi14:14:083:20:139:127:23
9:52
-2:30
23M
23.00 mi14:27:203:33:259:1713:12
10:33
+0:41
24M
24.00 mi14:37:223:43:279:1910:02
10:02
-0:31
40K
24.85 mi14:46:453:52:509:229:23
10:58
+0:56
25.2M
25.20 mi14:50:413:56:469:243:56
11:24
+0:26
Finish
26.22 mi15:01:124:07:179:2610:31
10:19
-1:05

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

8:33 /mi

Average Pace

9:26 /mi

Slowest Pace

12:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:20

55% of race

Time at Steady Pace

1:13:04

30% of race

Time at Slower Pace

38:53

16% of race

Average Pace: 9:26 /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 mi11:20:5627:018:4227:01
8:42
#18845
10K
6.21 mi11:47:5053:558:4126:54
8:39
#18978
15K
9.32 mi12:14:231:20:288:3826:33
8:33
#18652
20K
12.43 mi12:41:291:47:348:3927:06
8:43
#18544
Half
13.11 mi12:47:211:53:268:395:52
8:36
#18535
25K
15.53 mi13:09:152:15:208:4321:54
9:02
#18641
30K
18.64 mi13:40:112:46:168:5530:56
9:57
#19206
20M
20.00 mi13:54:233:00:289:0114:12
10:27
#19468
21M
21.00 mi14:06:453:12:509:1112:22
12:22
#19870
35K
21.75 mi14:14:083:20:139:127:23
9:52
#19924
23M
23.00 mi14:27:203:33:259:1713:12
10:33
#20051
24M
24.00 mi14:37:223:43:279:1910:02
10:02
#20106
40K
24.85 mi14:46:453:52:509:229:23
10:58
#20208
25.2M
25.20 mi14:50:413:56:469:243:56
11:24
#20226
Finish
26.22 mi15:01:124:07:179:2610:31
10:19
#20301
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi18845117221172218110(Top 68%)11529(Top 76%)11529(Top 562%)
10K6.21 mi3.10 mi18978-13311822-10011822-10019175(Top 72%)11970(Top 79%)11970(Top 583%)
15K9.32 mi3.11 mi18652+32611718+10411718+10418110(Top 68%)11529(Top 76%)11529(Top 562%)
20K12.43 mi3.11 mi18544+10811695+2311695+2318251(Top 69%)11591(Top 76%)11591(Top 565%)
Half13.11 mi0.68 mi18535+911691+411691+418319(Top 69%)11638(Top 77%)11638(Top 567%)
25K15.53 mi2.42 mi18641-10611701-1011701-1019126(Top 72%)11906(Top 78%)11906(Top 580%)
30K18.64 mi3.11 mi19206-56511925-22411925-22420905(Top 79%)12593(Top 83%)12593(Top 614%)
20M20.00 mi1.36 mi19468-26212015-9012015-9021605(Top 81%)12826(Top 85%)12826(Top 625%)
21M21.00 mi1.00 mi19870-40212186-17112186-17123277(Top 87%)13562(Top 89%)13562(Top 661%)
35K21.75 mi0.75 mi19924-5412196-1012196-1020904(Top 79%)12444(Top 82%)12444(Top 606%)
23M23.00 mi1.25 mi20051-12712231-3512231-3521416(Top 80%)12647(Top 83%)12647(Top 616%)
24M24.00 mi1.00 mi20106-5512249-1812249-1820870(Top 78%)12372(Top 82%)12372(Top 603%)
40K24.85 mi0.85 mi20208-10212279-3012279-3022284(Top 84%)12973(Top 85%)12973(Top 632%)
25.2M25.20 mi0.35 mi20226-1812285-612285-621331(Top 80%)12538(Top 83%)12538(Top 611%)
Finish26.22 mi1.02 mi20301-7512310-2512310-2522588(Top 85%)13127(Top 86%)13127(Top 640%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

18110

Males

11529

M50-54

11529

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19175

Males

11970

M50-54

11970

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

18110

Males

11529

M50-54

11529

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

18251

Males

11591

M50-54

11591

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

18319

Males

11638

M50-54

11638

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

19126

Males

11906

M50-54

11906

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

20905

Males

12593

M50-54

12593

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

21605

Males

12826

M50-54

12826

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

23277

Males

13562

M50-54

13562

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

20904

Males

12444

M50-54

12444

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21416

Males

12647

M50-54

12647

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

20870

Males

12372

M50-54

12372

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22284

Males

12973

M50-54

12973

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21331

Males

12538

M50-54

12538

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22588

Males

13127

M50-54

13127

Passing Analysis

Category:
Athletes Passed
1279
Passed By
2735
Net Change
-1456
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18845
5K → 10K281414-133#18845#18978
10K → 15K39973+326#18978#18652
15K → 20K212104+108#18652#18544
20K → Half3223+9#18544#18535
Half → 25K103209-106#18535#18641
25K → 30K48613-565#18641#19206
30K → 20M38300-262#19206#19468
20M → 21M12414-402#19468#19870
21M → 35K3084-54#19870#19924
35K → 23M46173-127#19924#20051
23M → 24M2883-55#20051#20106
24M → 40K20122-102#20106#20208
40K → 25.2M1129-18#20208#20226
25.2M → Finish1994-75#20226#20301
TOTALS12792735-1456
📊

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