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BOSTON MARATHON 2023

Matthew Iarrobino

Bib: 8943•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 19%
Gender (Male)
#0 / 15176
Top 30%
Masters (Masters Men)
#0 / 9891
Top 16%
Division (M45-49)
#0 / 2252
Top 20%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:06
Rank: #4600
Start → 5K
21:06 | 6:47/mi
10K· 6.21 mi
41:58
Rank: #4538 (+62)
5K → 10K
20:52 | 6:43/mi
15K· 9.32 mi
1:02:54
Rank: #4490 (+48)
10K → 15K
20:56 | 6:44/mi
20K· 12.43 mi
1:24:13
Rank: #4614 (-124)
15K → 20K
21:19 | 6:52/mi
Half· 13.11 mi
1:28:50
Rank: #4617 (-3)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:45:34
Rank: #4658 (-41)
Half → 25K
16:44 | 6:54/mi
30K· 18.64 mi
2:08:02
Rank: #4914 (-256)
25K → 30K
22:28 | 7:14/mi
20M
2:18:03
Rank: #5004 (-90)
30K → 20M
10:01 | 7:22/mi
21M
2:25:51
Rank: #5065 (-61)
20M → 21M
7:48 | 7:48/mi
35K· 21.75 mi
2:31:12
Rank: #5083 (-18)
21M → 35K
5:21 | 7:09/mi
23M
2:40:30
Rank: #5099 (-16)
35K → 23M
9:18 | 7:26/mi
24M
2:47:50
Rank: #5103 (-4)
23M → 24M
7:20 | 7:20/mi
40K· 24.85 mi
2:54:11
Rank: #5089 (+14)
24M → 40K
6:21 | 7:26/mi
25.2M
2:56:49
Rank: #5073 (+16)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:03:48
Rank: #5012 (+61)
25.2M → Finish
6:59 | 6:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:50
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:34:58
Pace7:15 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:2121:066:4721:06
6:47
-
10K
6.21 mi11:07:1341:586:4520:52
6:43
-0:04
15K
9.32 mi11:28:091:02:546:4520:56
6:44
+0:01
20K
12.43 mi11:49:281:24:136:4721:19
6:52
+0:08
Half
13.11 mi11:54:051:28:506:474:37
6:46
-0:06
25K
15.53 mi12:10:491:45:346:4816:44
6:54
+0:08
30K
18.64 mi12:33:172:08:026:5222:28
7:14
+0:20
20M
20.00 mi12:43:182:18:036:5410:01
7:22
+0:08
21M
21.00 mi12:51:062:25:516:577:48
7:48
+0:26
35K
21.75 mi12:56:272:31:126:575:21
7:09
-0:39
23M
23.00 mi13:05:452:40:306:599:18
7:26
+0:17
24M
24.00 mi13:13:052:47:507:007:20
7:20
-0:06
40K
24.85 mi13:19:262:54:117:006:21
7:26
+0:06
25.2M
25.20 mi13:22:042:56:497:012:38
7:38
+0:12
Finish
26.22 mi13:29:033:03:487:016:59
6:51
-0:47

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

6:43 /mi

Average Pace

7:01 /mi

Slowest Pace

7:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:43

86% of race

Time at Steady Pace

26:05

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:01 /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 mi10:46:2121:066:4721:06
6:47
#4600
10K
6.21 mi11:07:1341:586:4520:52
6:43
#4538
15K
9.32 mi11:28:091:02:546:4520:56
6:44
#4490
20K
12.43 mi11:49:281:24:136:4721:19
6:52
#4614
Half
13.11 mi11:54:051:28:506:474:37
6:46
#4617
25K
15.53 mi12:10:491:45:346:4816:44
6:54
#4658
30K
18.64 mi12:33:172:08:026:5222:28
7:14
#4914
20M
20.00 mi12:43:182:18:036:5410:01
7:22
#5004
21M
21.00 mi12:51:062:25:516:577:48
7:48
#5065
35K
21.75 mi12:56:272:31:126:575:21
7:09
#5083
23M
23.00 mi13:05:452:40:306:599:18
7:26
#5099
24M
24.00 mi13:13:052:47:507:007:20
7:20
#5103
40K
24.85 mi13:19:262:54:117:006:21
7:26
#5089
25.2M
25.20 mi13:22:042:56:497:012:38
7:38
#5073
Finish
26.22 mi13:29:033:03:487:016:59
6:51
#5012
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4600428842884495(Top 17%)4199(Top 28%)4199(Top 186%)
10K6.21 mi3.10 mi4538+624241+474241+474510(Top 17%)4215(Top 28%)4215(Top 187%)
15K9.32 mi3.11 mi4490+484196+454196+454495(Top 17%)4199(Top 28%)4199(Top 186%)
20K12.43 mi3.11 mi4614-1244304-1084304-1085013(Top 19%)4646(Top 31%)4646(Top 206%)
Half13.11 mi0.68 mi4617-34307-34307-34990(Top 19%)4622(Top 30%)4622(Top 205%)
25K15.53 mi2.42 mi4658-414338-314338-314970(Top 19%)4599(Top 30%)4599(Top 204%)
30K18.64 mi3.11 mi4914-2564572-2344572-2345652(Top 21%)5112(Top 34%)5112(Top 227%)
20M20.00 mi1.36 mi5004-904640-684640-686005(Top 23%)5290(Top 35%)5290(Top 235%)
21M21.00 mi1.00 mi5065-614685-454685-456142(Top 23%)5290(Top 35%)5290(Top 235%)
35K21.75 mi0.75 mi5083-184692-74692-76171(Top 23%)5343(Top 35%)5343(Top 237%)
23M23.00 mi1.25 mi5099-164690+24690+26002(Top 23%)5180(Top 34%)5180(Top 230%)
24M24.00 mi1.00 mi5103-4469046906562(Top 25%)5452(Top 36%)5452(Top 242%)
40K24.85 mi0.85 mi5089+144679+114679+116208(Top 23%)5143(Top 34%)5143(Top 228%)
25.2M25.20 mi0.35 mi5073+164663+164663+164536(Top 17%)3949(Top 26%)3949(Top 175%)
Finish26.22 mi1.02 mi5012+614606+574606+574364(Top 16%)3822(Top 25%)3822(Top 170%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4495

Males

4199

M45-49

4199

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4510

Males

4215

M45-49

4215

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4495

Males

4199

M45-49

4199

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5013

Males

4646

M45-49

4646

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

4990

Males

4622

M45-49

4622

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

4970

Males

4599

M45-49

4599

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5652

Males

5112

M45-49

5112

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6005

Males

5290

M45-49

5290

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6142

Males

5290

M45-49

5290

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6171

Males

5343

M45-49

5343

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6002

Males

5180

M45-49

5180

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6562

Males

5452

M45-49

5452

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6208

Males

5143

M45-49

5143

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4536

Males

3949

M45-49

3949

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4364

Males

3822

M45-49

3822

Passing Analysis

Category:
Athletes Passed
984
Passed By
1396
Net Change
-412
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4600
5K → 10K236174+62#4600#4538
10K → 15K14799+48#4538#4490
15K → 20K64188-124#4490#4614
20K → Half1316-3#4614#4617
Half → 25K91132-41#4617#4658
25K → 30K69325-256#4658#4914
30K → 20M37127-90#4914#5004
20M → 21M39100-61#5004#5065
21M → 35K2846-18#5065#5083
35K → 23M6076-16#5083#5099
23M → 24M4852-4#5099#5103
24M → 40K4733+14#5103#5089
40K → 25.2M2610+16#5089#5073
25.2M → Finish7918+61#5073#5012
TOTALS9841396-412
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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