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BOSTON MARATHON 2023

Ilana Katz

Bib: 16714•F

WA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 29%
Division (F18-39)
#0 / 4884
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:31/mi
23:22
↑ 97↓ 3451.5%
10K· 6.21 mi
7:36/mi
46:59
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:10:28
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:34:16
↑ 106↓ 860.1%
Half· 13.11 mi
7:31/mi
1:39:24
↑ 19↓ 370.5%
25K· 15.53 mi
7:46/mi
1:58:15
↑ 66↓ 880.2%
30K· 18.64 mi
8:08/mi
2:23:30
↑ 181↓ 1480.2%
20M
8:23/mi
2:34:53
↑ 64↓ 500.2%
21M
9:17/mi
2:44:10
↑ 106↓ 241.6%
35K· 21.75 mi
8:17/mi
2:50:22
↑ 17↓ 861.7%
23M
8:54/mi
3:01:31
↑ 23↓ 630.6%
24M
8:24/mi
3:09:55
↓ 821.3%
40K· 24.85 mi
8:59/mi
3:17:36
↓ 200.3%
25.2M
9:40/mi
3:20:56
↑ 13↓ 160.2%
Finish· 26.22 mi
8:54/mi
3:30:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:24
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:50:36
Pace8:26 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:3323:227:3123:22
7:31
-
10K
6.21 mi11:37:1046:597:3423:37
7:36
+0:05
15K
9.32 mi12:00:391:10:287:3423:29
7:34
-0:02
20K
12.43 mi12:24:271:34:167:3523:48
7:40
+0:06
Half
13.11 mi12:29:351:39:247:355:08
7:31
-0:09
25K
15.53 mi12:48:261:58:157:3718:51
7:46
+0:15
30K
18.64 mi13:13:412:23:307:4225:15
8:08
+0:22
20M
20.00 mi13:25:042:34:537:4511:23
8:23
+0:15
21M
21.00 mi13:34:212:44:107:499:17
9:17
+0:54
35K
21.75 mi13:40:332:50:227:506:12
8:17
-1:00
23M
23.00 mi13:51:423:01:317:5411:09
8:54
+0:37
24M
24.00 mi14:00:063:09:557:558:24
8:24
-0:30
40K
24.85 mi14:07:473:17:367:577:41
8:59
+0:35
25.2M
25.20 mi14:11:073:20:567:583:20
9:40
+0:41
Finish
26.22 mi14:20:113:30:008:019:04
8:54
-0:46

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

7:31 /mi

Average Pace

8:01 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:15

56% of race

Time at Steady Pace

51:14

24% of race

Time at Slower Pace

40:31

19% of race

Average Pace: 8:01 /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 mi11:13:3323:227:3123:22
7:31
#9831
10K
6.21 mi11:37:1046:597:3423:37
7:36
#10577
15K
9.32 mi12:00:391:10:287:3423:29
7:34
#10594
20K
12.43 mi12:24:271:34:167:3523:48
7:40
#10581
Half
13.11 mi12:29:351:39:247:355:08
7:31
#10570
25K
15.53 mi12:48:261:58:157:3718:51
7:46
#10593
30K
18.64 mi13:13:412:23:307:4225:15
8:08
#10765
20M
20.00 mi13:25:042:34:537:4511:23
8:23
#10886
21M
21.00 mi13:34:212:44:107:499:17
9:17
#11141
35K
21.75 mi13:40:332:50:227:506:12
8:17
#11257
23M
23.00 mi13:51:423:01:317:5411:09
8:54
#11581
24M
24.00 mi14:00:063:09:557:558:24
8:24
#11698
40K
24.85 mi14:07:473:17:367:577:41
8:59
#11886
25.2M
25.20 mi14:11:073:20:567:583:20
9:40
#11977
Finish
26.22 mi14:20:113:30:008:019:04
8:54
#12262
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi98311776177610673(Top 40%)2174(Top 19%)2174(Top 45%)
10K6.21 mi3.10 mi10577-7462113-3372113-33711369(Top 43%)2537(Top 22%)2537(Top 52%)
15K9.32 mi3.11 mi10594-172120-72120-710673(Top 40%)2174(Top 19%)2174(Top 45%)
20K12.43 mi3.11 mi10581+132116+42116+410611(Top 40%)2210(Top 19%)2210(Top 45%)
Half13.11 mi0.68 mi10570+112103+132103+1310501(Top 39%)2156(Top 19%)2156(Top 44%)
25K15.53 mi2.42 mi10593-232143-402143-4010920(Top 41%)2449(Top 21%)2449(Top 50%)
30K18.64 mi3.11 mi10765-1722281-1382281-13811848(Top 45%)3096(Top 27%)3096(Top 63%)
20M20.00 mi1.36 mi10886-1212374-932374-9312879(Top 48%)3789(Top 33%)3789(Top 78%)
21M21.00 mi1.00 mi11141-2552529-1552529-15514895(Top 56%)4984(Top 44%)4984(Top 102%)
35K21.75 mi0.75 mi11257-1162609-802609-8014032(Top 53%)4568(Top 40%)4568(Top 94%)
23M23.00 mi1.25 mi11581-3242817-2082817-20815562(Top 58%)5481(Top 48%)5481(Top 112%)
24M24.00 mi1.00 mi11698-1172896-792896-7913878(Top 52%)4593(Top 40%)4593(Top 94%)
40K24.85 mi0.85 mi11886-1883030-1343030-13416067(Top 60%)5887(Top 52%)5887(Top 121%)
25.2M25.20 mi0.35 mi11977-913091-613091-6115958(Top 60%)5822(Top 51%)5822(Top 119%)
Finish26.22 mi1.02 mi12262-2853270-1793270-17917481(Top 66%)6632(Top 58%)6632(Top 136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10673

Females

2174

F18-39

2174

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11369

Females

2537

F18-39

2537

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10673

Females

2174

F18-39

2174

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

10611

Females

2210

F18-39

2210

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

10501

Females

2156

F18-39

2156

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10920

Females

2449

F18-39

2449

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

11848

Females

3096

F18-39

3096

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

12879

Females

3789

F18-39

3789

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14895

Females

4984

F18-39

4984

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

14032

Females

4568

F18-39

4568

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15562

Females

5481

F18-39

5481

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

13878

Females

4593

F18-39

4593

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16067

Females

5887

F18-39

5887

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15958

Females

5822

F18-39

5822

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17481

Females

6632

F18-39

6632

Passing Analysis

Category:
Athletes Passed
920*
Passed By
3350
Net Change
-2431
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9831
5K → 10K72817-746#9831#10577
10K → 15K185202-17#10577#10594
15K → 20K164151+13#10594#10581
20K → Half3928+11#10581#10570
Half → 25K122145-23#10570#10593
25K → 30K124296-172#10593#10765
30K → 20M49*170-121#10765#10886
20M → 21M25280-255#10886#11141
21M → 35K17133-116#11141#11257
35K → 23M34358-324#11257#11581
23M → 24M35152-117#11581#11698
24M → 40K27215-188#11698#11886
40K → 25.2M9100-91#11886#11977
25.2M → Finish18303-285#11977#12262
TOTALS920*3350-2431

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

📊

Passing Visuals

Category:
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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