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BOSTON MARATHON 2023

Katharine Kaftanski

Bib: 18404•X

MN

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Other)
#0 / 23
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:27
Rank: #17666
Start → 5K
26:27 | 8:31/mi
10K· 6.21 mi
52:24
Rank: #17435 (+231)
5K → 10K
25:57 | 8:21/mi
15K· 9.32 mi
1:18:11
Rank: #17126 (+309)
10K → 15K
25:47 | 8:18/mi
20K· 12.43 mi
1:43:54
Rank: #16712 (+414)
15K → 20K
25:43 | 8:17/mi
Half· 13.11 mi
1:49:28
Rank: #16641 (+71)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:09:40
Rank: #16393 (+248)
Half → 25K
20:12 | 8:20/mi
30K· 18.64 mi
2:35:55
Rank: #15900 (+493)
25K → 30K
26:15 | 8:27/mi
20M
2:47:24
Rank: #15676 (+224)
30K → 20M
11:29 | 8:27/mi
21M
2:56:11
Rank: #15453 (+223)
20M → 21M
8:47 | 8:47/mi
35K· 21.75 mi
3:02:14
Rank: #15341 (+112)
21M → 35K
6:03 | 8:05/mi
23M
3:12:56
Rank: #15213 (+128)
35K → 23M
10:42 | 8:33/mi
24M
3:21:25
Rank: #15150 (+63)
23M → 24M
8:29 | 8:29/mi
40K· 24.85 mi
3:28:46
Rank: #15112 (+38)
24M → 40K
7:21 | 8:36/mi
25.2M
3:31:54
Rank: #15061 (+51)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:40:02
Rank: #14961 (+100)
25.2M → Finish
8:08 | 7:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:28
Pace8:21 /mi
2nd Half
Distance13.11 mi
Time1:50:34
Pace8:26 /mi
📊Positive Split: 1.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3626:278:3126:27
8:31
-
10K
6.21 mi11:45:3352:248:2625:57
8:21
-0:10
15K
9.32 mi12:11:201:18:118:2325:47
8:18
-0:03
20K
12.43 mi12:37:031:43:548:2225:43
8:17
-0:01
Half
13.11 mi12:42:371:49:288:215:34
8:10
-0:07
25K
15.53 mi13:02:492:09:408:2120:12
8:20
+0:10
30K
18.64 mi13:29:042:35:558:2226:15
8:27
+0:07
20M
20.00 mi13:40:332:47:248:2211:29
8:27
0:00
21M
21.00 mi13:49:202:56:118:238:47
8:47
+0:20
35K
21.75 mi13:55:233:02:148:236:03
8:05
-0:42
23M
23.00 mi14:06:053:12:568:2310:42
8:33
+0:28
24M
24.00 mi14:14:343:21:258:248:29
8:29
-0:04
40K
24.85 mi14:21:553:28:468:247:21
8:36
+0:07
25.2M
25.20 mi14:25:033:31:548:253:08
9:05
+0:29
Finish
26.22 mi14:33:113:40:028:248:08
7:59
-1:06

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

7:59 /mi

Average Pace

8:24 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:28:07

95% of race

Time at Steady Pace

11:55

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:24 /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 mi11:19:3626:278:3126:27
8:31
#17666
10K
6.21 mi11:45:3352:248:2625:57
8:21
#17435
15K
9.32 mi12:11:201:18:118:2325:47
8:18
#17126
20K
12.43 mi12:37:031:43:548:2225:43
8:17
#16712
Half
13.11 mi12:42:371:49:288:215:34
8:10
#16641
25K
15.53 mi13:02:492:09:408:2120:12
8:20
#16393
30K
18.64 mi13:29:042:35:558:2226:15
8:27
#15900
20M
20.00 mi13:40:332:47:248:2211:29
8:27
#15676
21M
21.00 mi13:49:202:56:118:238:47
8:47
#15453
35K
21.75 mi13:55:233:02:148:236:03
8:05
#15341
23M
23.00 mi14:06:053:12:568:2310:42
8:33
#15213
24M
24.00 mi14:14:343:21:258:248:29
8:29
#15150
40K
24.85 mi14:21:553:28:468:247:21
8:36
#15112
25.2M
25.20 mi14:25:033:31:548:253:08
9:05
#15061
Finish
26.22 mi14:33:113:40:028:248:08
7:59
#14961
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallXAge DivSeg. OverallSeg. XSeg. Age Div
5K3.11 mi3.11 mi17666212116552(Top 62%)21(Top 91%)21
10K6.21 mi3.10 mi17435+231212117275(Top 65%)21(Top 91%)21
15K9.32 mi3.11 mi17126+309212116552(Top 62%)21(Top 91%)21
20K12.43 mi3.11 mi16712+414212115487(Top 58%)19(Top 83%)19
Half13.11 mi0.68 mi16641+71212115600(Top 59%)20(Top 87%)20
25K15.53 mi2.42 mi16393+248212115161(Top 57%)19(Top 83%)19
30K18.64 mi3.11 mi15900+493212113998(Top 53%)18(Top 78%)18
20M20.00 mi1.36 mi15676+224212113376(Top 50%)18(Top 78%)18
21M21.00 mi1.00 mi15453+223212112208(Top 46%)17(Top 74%)17
35K21.75 mi0.75 mi15341+112212112784(Top 48%)18(Top 78%)18
23M23.00 mi1.25 mi15213+12820+120+113541(Top 51%)18(Top 78%)18
24M24.00 mi1.00 mi15150+63202014432(Top 54%)19(Top 83%)19
40K24.85 mi0.85 mi15112+38202013998(Top 53%)18(Top 78%)18
25.2M25.20 mi0.35 mi15061+51202013139(Top 49%)16(Top 70%)16
Finish26.22 mi1.02 mi14961+100202012052(Top 45%)15(Top 65%)15

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21stories
+97ft-345ft

Overall

16552

X

21

Age Div

21

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

17275

X

21

Age Div

21

10K→15K

6.2 - 9.3 mi

Top 62%
×3stories
+67ft-78ft

Overall

16552

X

21

Age Div

21

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15487

X

19

Age Div

19

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

15600

X

20

Age Div

20

Half→25K

13.1 - 15.5 mi

Top 57%
×4stories
+66ft-88ft

Overall

15161

X

19

Age Div

19

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

13998

X

18

Age Div

18

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

13376

X

18

Age Div

18

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12208

X

17

Age Div

17

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12784

X

18

Age Div

18

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13541

X

18

Age Div

18

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14432

X

19

Age Div

19

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

13998

X

18

Age Div

18

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13139

X

16

Age Div

16

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

12052

X

15

Age Div

15

Passing Analysis

Category:
Athletes Passed
3229
Passed By
524
Net Change
+2705
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17666
5K → 10K452221+231#17666#17435
10K → 15K37869+309#17435#17126
15K → 20K44531+414#17126#16712
20K → Half798+71#16712#16641
Half → 25K28032+248#16641#16393
25K → 30K5029+493#16393#15900
30K → 20M2284+224#15900#15676
20M → 21M2318+223#15676#15453
21M → 35K1153+112#15453#15341
35K → 23M16436+128#15341#15213
23M → 24M9734+63#15213#15150
24M → 40K7941+38#15150#15112
40K → 25.2M6312+51#15112#15061
25.2M → Finish11616+100#15061#14961
TOTALS3229524+2705
📊

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