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BOSTON MARATHON 2023

Michela Izzo

Bib: 13908•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Masters (Masters Women)
#0 / 6539
Top 7%
Division (F40-44)
#0 / 1878
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:47
Rank: #8350
Start → 5K
7:20/mi
22:47 split
10K· 6.21 mi
45:36
Rank: #8721 (-371)
5K → 10K
7:21/mi
22:49 split
15K· 9.32 mi
1:08:50
Rank: #9083 (-362)
10K → 15K
7:29/mi
23:14 split
20K· 12.43 mi
1:32:38
Rank: #9443 (-360)
15K → 20K
7:40/mi
23:48 split
Half· 13.11 mi
1:37:46
Rank: #9493 (-50)
20K → Half
7:31/mi
5:08 split
25K· 15.53 mi
1:56:32
Rank: #9670 (-177)
Half → 25K
7:44/mi
18:46 split
30K· 18.64 mi
2:21:08
Rank: #9748 (-78)
25K → 30K
7:55/mi
24:36 split
20M
2:32:01
Rank: #9747 (+1)
30K → 20M
8:01/mi
10:53 split
21M
2:40:37
Rank: #9793 (-46)
20M → 21M
8:36/mi
8:36 split
35K· 21.75 mi
2:46:18
Rank: #9766 (+27)
21M → 35K
7:36/mi
5:41 split
23M
2:56:16
Rank: #9717 (+49)
35K → 23M
7:58/mi
9:58 split
24M
3:03:59
Rank: #9661 (+56)
23M → 24M
7:43/mi
7:43 split
40K· 24.85 mi
3:10:48
Rank: #9644 (+17)
24M → 40K
7:58/mi
6:49 split
25.2M
3:13:45
Rank: #9622 (+22)
40K → 25.2M
8:33/mi
2:57 split
Finish· 26.22 mi
3:21:48
Rank: #9667 (-45)
25.2M → Finish
7:54/mi
8:03 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:46
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:44:02
Pace7:56 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5522:477:2022:47
7:20
-
10K
6.21 mi11:13:4445:367:2022:49
7:21
+0:01
15K
9.32 mi11:36:581:08:507:2323:14
7:29
+0:08
20K
12.43 mi12:00:461:32:387:2723:48
7:40
+0:11
Half
13.11 mi12:05:541:37:467:275:08
7:31
-0:09
25K
15.53 mi12:24:401:56:327:3018:46
7:44
+0:13
30K
18.64 mi12:49:162:21:087:3424:36
7:55
+0:11
20M
20.00 mi13:00:092:32:017:3610:53
8:01
+0:06
21M
21.00 mi13:08:452:40:377:398:36
8:36
+0:35
35K
21.75 mi13:14:262:46:187:395:41
7:36
-1:00
23M
23.00 mi13:24:242:56:167:409:58
7:58
+0:22
24M
24.00 mi13:32:073:03:597:407:43
7:43
-0:15
40K
24.85 mi13:38:563:10:487:416:49
7:58
+0:15
25.2M
25.20 mi13:41:533:13:457:412:57
8:33
+0:35
Finish
26.22 mi13:49:563:21:487:428:03
7:54
-0:39

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

7:20 /mi

Average Pace

7:42 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:15

94% of race

Time at Steady Pace

11:33

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:42 /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 mi10:50:5522:477:2022:47
7:20
#8350
10K
6.21 mi11:13:4445:367:2022:49
7:21
#8721
15K
9.32 mi11:36:581:08:507:2323:14
7:29
#9083
20K
12.43 mi12:00:461:32:387:2723:48
7:40
#9443
Half
13.11 mi12:05:541:37:467:275:08
7:31
#9493
25K
15.53 mi12:24:401:56:327:3018:46
7:44
#9670
30K
18.64 mi12:49:162:21:087:3424:36
7:55
#9748
20M
20.00 mi13:00:092:32:017:3610:53
8:01
#9747
21M
21.00 mi13:08:452:40:377:398:36
8:36
#9793
35K
21.75 mi13:14:262:46:187:395:41
7:36
#9766
23M
23.00 mi13:24:242:56:167:409:58
7:58
#9717
24M
24.00 mi13:32:073:03:597:407:43
7:43
#9661
40K
24.85 mi13:38:563:10:487:416:49
7:58
#9644
25.2M
25.20 mi13:41:533:13:457:412:57
8:33
#9622
Finish
26.22 mi13:49:563:21:487:428:03
7:54
#9667
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi83501145114510011(Top 38%)1846(Top 16%)1846(Top 98%)
10K6.21 mi3.10 mi8721-3711297-1521297-1529200(Top 35%)1499(Top 13%)1499(Top 80%)
15K9.32 mi3.11 mi9083-3621461-1641461-16410011(Top 38%)1846(Top 16%)1846(Top 98%)
20K12.43 mi3.11 mi9443-3601609-1481609-14810601(Top 40%)2200(Top 19%)2200(Top 117%)
Half13.11 mi0.68 mi9493-501626-171626-1710452(Top 39%)2107(Top 18%)2107(Top 112%)
25K15.53 mi2.42 mi9670-1771715-891715-8910623(Top 40%)2293(Top 20%)2293(Top 122%)
30K18.64 mi3.11 mi9748-781781-661781-6610279(Top 39%)2291(Top 20%)2291(Top 122%)
20M20.00 mi1.36 mi9747+11806-251806-2510338(Top 39%)2384(Top 21%)2384(Top 127%)
21M21.00 mi1.00 mi9793-461848-421848-4211063(Top 42%)2898(Top 25%)2898(Top 154%)
35K21.75 mi0.75 mi9766+271853-51853-59292(Top 35%)2045(Top 18%)2045(Top 109%)
23M23.00 mi1.25 mi9717+491869-161869-169496(Top 36%)2261(Top 20%)2261(Top 120%)
24M24.00 mi1.00 mi9661+561868+11868+19214(Top 35%)2202(Top 19%)2202(Top 117%)
40K24.85 mi0.85 mi9644+171882-141882-149889(Top 37%)2587(Top 23%)2587(Top 138%)
25.2M25.20 mi0.35 mi9622+221899-171899-179908(Top 37%)2624(Top 23%)2624(Top 140%)
Finish26.22 mi1.02 mi9667-451949-501949-5011402(Top 43%)3390(Top 30%)3390(Top 181%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10011

Females

1846

F40-44

1846

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9200

Females

1499

F40-44

1499

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10011

Females

1846

F40-44

1846

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10601

Females

2200

F40-44

2200

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10452

Females

2107

F40-44

2107

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

10623

Females

2293

F40-44

2293

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10279

Females

2291

F40-44

2291

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

10338

Females

2384

F40-44

2384

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11063

Females

2898

F40-44

2898

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9292

Females

2045

F40-44

2045

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9496

Females

2261

F40-44

2261

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9214

Females

2202

F40-44

2202

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9889

Females

2587

F40-44

2587

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9908

Females

2624

F40-44

2624

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11402

Females

3390

F40-44

3390

Passing Analysis

Category:
Athletes Passed
1034*
Passed By
2351
Net Change
-1317
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8350
5K → 10K113484-371#8350#8721
10K → 15K58420-362#8721#9083
15K → 20K53413-360#9083#9443
20K → Half1060-50#9443#9493
Half → 25K78255-177#9493#9670
25K → 30K142*220-78#9670#9748
30K → 20M9089+1#9748#9747
20M → 21M61107-46#9747#9793
21M → 35K5326+27#9793#9766
35K → 23M11667+49#9766#9717
23M → 24M9034+56#9717#9661
24M → 40K66*49+17#9661#9644
40K → 25.2M5129+22#9644#9622
25.2M → Finish5398-45#9622#9667
TOTALS1034*2351-1317

* 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