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BOSTON MARATHON 2023

Kristin Kachnowski

Bib: 20814•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 49%
Division (F50-54)
#0 / 1207
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:51
Rank: #18515
Start → 5K
26:51 | 8:39/mi
10K· 6.21 mi
52:53
Rank: #17968 (+547)
5K → 10K
26:02 | 8:23/mi
15K· 9.32 mi
1:19:01
Rank: #17711 (+257)
10K → 15K
26:08 | 8:25/mi
20K· 12.43 mi
1:46:04
Rank: #17791 (-80)
15K → 20K
27:03 | 8:42/mi
Half· 13.11 mi
1:51:55
Rank: #17807 (-16)
20K → Half
5:51 | 8:34/mi
25K· 15.53 mi
2:13:12
Rank: #17786 (+21)
Half → 25K
21:17 | 8:47/mi
30K· 18.64 mi
2:41:28
Rank: #17729 (+57)
25K → 30K
28:16 | 9:06/mi
20M
2:53:50
Rank: #17685 (+44)
30K → 20M
12:22 | 9:06/mi
21M
3:03:54
Rank: #17728 (-43)
20M → 21M
10:04 | 10:04/mi
35K· 21.75 mi
3:10:37
Rank: #17720 (+8)
21M → 35K
6:43 | 8:59/mi
23M
3:22:11
Rank: #17706 (+14)
35K → 23M
11:34 | 9:14/mi
24M
3:31:21
Rank: #17741 (-35)
23M → 24M
9:10 | 9:10/mi
40K· 24.85 mi
3:39:22
Rank: #17768 (-27)
24M → 40K
8:01 | 9:23/mi
25.2M
3:42:43
Rank: #17749 (+19)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:51:44
Rank: #17724 (+25)
25.2M → Finish
9:01 | 8:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:55
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time1:59:49
Pace9:08 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0026:518:3926:51
8:39
-
10K
6.21 mi11:45:0252:538:3126:02
8:23
-0:16
15K
9.32 mi12:11:101:19:018:2926:08
8:25
+0:02
20K
12.43 mi12:38:131:46:048:3227:03
8:42
+0:17
Half
13.11 mi12:44:041:51:558:325:51
8:34
-0:08
25K
15.53 mi13:05:212:13:128:3421:17
8:47
+0:13
30K
18.64 mi13:33:372:41:288:4028:16
9:06
+0:19
20M
20.00 mi13:45:592:53:508:4112:22
9:06
0:00
21M
21.00 mi13:56:033:03:548:4510:04
10:04
+0:58
35K
21.75 mi14:02:463:10:378:466:43
8:59
-1:05
23M
23.00 mi14:14:203:22:118:4711:34
9:14
+0:15
24M
24.00 mi14:23:303:31:218:489:10
9:10
-0:04
40K
24.85 mi14:31:313:39:228:508:01
9:23
+0:13
25.2M
25.20 mi14:34:523:42:438:503:21
9:43
+0:20
Finish
26.22 mi14:43:533:51:448:519:01
8:51
-0:52

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

8:23 /mi

Average Pace

8:51 /mi

Slowest Pace

10:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:55

48% of race

Time at Steady Pace

1:26:49

37% of race

Time at Slower Pace

33:00

14% of race

Average Pace: 8:50 /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 mi11:19:0026:518:3926:51
8:39
#18515
10K
6.21 mi11:45:0252:538:3126:02
8:23
#17968
15K
9.32 mi12:11:101:19:018:2926:08
8:25
#17711
20K
12.43 mi12:38:131:46:048:3227:03
8:42
#17791
Half
13.11 mi12:44:041:51:558:325:51
8:34
#17807
25K
15.53 mi13:05:212:13:128:3421:17
8:47
#17786
30K
18.64 mi13:33:372:41:288:4028:16
9:06
#17729
20M
20.00 mi13:45:592:53:508:4112:22
9:06
#17685
21M
21.00 mi13:56:033:03:548:4510:04
10:04
#17728
35K
21.75 mi14:02:463:10:378:466:43
8:59
#17720
23M
23.00 mi14:14:203:22:118:4711:34
9:14
#17706
24M
24.00 mi14:23:303:31:218:489:10
9:10
#17741
40K
24.85 mi14:31:313:39:228:508:01
9:23
#17768
25.2M
25.20 mi14:34:523:42:438:503:21
9:43
#17749
Finish
26.22 mi14:43:533:51:448:519:01
8:51
#17724
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi185156880688017236(Top 65%)6067(Top 53%)6067(Top 503%)
10K6.21 mi3.10 mi17968+5476516+3646516+36417466(Top 66%)6164(Top 54%)6164(Top 511%)
15K9.32 mi3.11 mi17711+2576344+1726344+17217236(Top 65%)6067(Top 53%)6067(Top 503%)
20K12.43 mi3.11 mi17791-806398-546398-5418171(Top 68%)6602(Top 58%)6602(Top 547%)
Half13.11 mi0.68 mi17807-166403-56403-518215(Top 68%)6610(Top 58%)6610(Top 548%)
25K15.53 mi2.42 mi17786+216410-76410-717833(Top 67%)6477(Top 57%)6477(Top 537%)
30K18.64 mi3.11 mi17729+576392+186392+1817684(Top 66%)6455(Top 57%)6455(Top 535%)
20M20.00 mi1.36 mi17685+446385+76385+717080(Top 64%)6210(Top 54%)6210(Top 514%)
21M21.00 mi1.00 mi17728-436427-426427-4218273(Top 69%)6910(Top 60%)6910(Top 572%)
35K21.75 mi0.75 mi17720+86438-116438-1117837(Top 67%)6739(Top 59%)6739(Top 558%)
23M23.00 mi1.25 mi17706+146447-96447-917251(Top 65%)6427(Top 56%)6427(Top 532%)
24M24.00 mi1.00 mi17741-356475-286475-2817947(Top 67%)6871(Top 60%)6871(Top 569%)
40K24.85 mi0.85 mi17768-276496-216496-2117865(Top 67%)6873(Top 60%)6873(Top 569%)
25.2M25.20 mi0.35 mi17749+196491+56491+516252(Top 61%)6019(Top 53%)6019(Top 499%)
Finish26.22 mi1.02 mi17724+256489+26489+217284(Top 65%)6525(Top 57%)6525(Top 541%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

17236

Females

6067

F50-54

6067

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

17466

Females

6164

F50-54

6164

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

17236

Females

6067

F50-54

6067

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

18171

Females

6602

F50-54

6602

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

18215

Females

6610

F50-54

6610

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

17833

Females

6477

F50-54

6477

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17684

Females

6455

F50-54

6455

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

17080

Females

6210

F50-54

6210

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

18273

Females

6910

F50-54

6910

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

17837

Females

6739

F50-54

6739

35K→23M

21.8 - 23.0 mi

Top 65%
×5stories
+23ft-63ft

Overall

17251

Females

6427

F50-54

6427

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

17947

Females

6871

F50-54

6871

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17865

Females

6873

F50-54

6873

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16252

Females

6019

F50-54

6019

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17284

Females

6525

F50-54

6525

Passing Analysis

Category:
Athletes Passed
2066
Passed By
1275
Net Change
+791
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18515
5K → 10K701154+547#18515#17968
10K → 15K34285+257#17968#17711
15K → 20K133213-80#17711#17791
20K → Half2642-16#17791#17807
Half → 25K140119+21#17807#17786
25K → 30K206149+57#17786#17729
30K → 20M10359+44#17729#17685
20M → 21M68111-43#17685#17728
21M → 35K5547+8#17728#17720
35K → 23M9278+14#17720#17706
23M → 24M5186-35#17706#17741
24M → 40K4976-27#17741#17768
40K → 25.2M245+19#17768#17749
25.2M → Finish7651+25#17749#17724
TOTALS20661275+791
📊

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