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BOSTON MARATHON 2023

Julie Kolodziejczak

Bib: 17203•F

IL

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 34%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:06
Rank: #14562
Start → 5K
8:05/mi
25:06 split
10K· 6.21 mi
50:00
Rank: #14721 (-159)
5K → 10K
8:01/mi
24:54 split
15K· 9.32 mi
1:15:07
Rank: #14820 (-99)
10K → 15K
8:05/mi
25:07 split
20K· 12.43 mi
1:40:21
Rank: #14691 (+129)
15K → 20K
8:07/mi
25:14 split
Half· 13.11 mi
1:45:49
Rank: #14666 (+25)
20K → Half
8:01/mi
5:28 split
25K· 15.53 mi
2:05:36
Rank: #14547 (+119)
Half → 25K
8:10/mi
19:47 split
30K· 18.64 mi
2:31:34
Rank: #14339 (+208)
25K → 30K
8:21/mi
25:58 split
20M
2:43:02
Rank: #14227 (+112)
30K → 20M
8:26/mi
11:28 split
21M
2:52:00
Rank: #14139 (+88)
20M → 21M
8:58/mi
8:58 split
35K· 21.75 mi
2:58:05
Rank: #14072 (+67)
21M → 35K
8:08/mi
6:05 split
23M
3:08:19
Rank: #13871 (+201)
35K → 23M
8:10/mi
10:14 split
24M
3:16:14
Rank: #13706 (+165)
23M → 24M
7:55/mi
7:55 split
40K· 24.85 mi
3:23:04
Rank: #13540 (+166)
24M → 40K
8:00/mi
6:50 split
25.2M
3:26:03
Rank: #13465 (+75)
40K → 25.2M
8:39/mi
2:59 split
Finish· 26.22 mi
3:34:03
Rank: #13349 (+116)
25.2M → Finish
7:51/mi
8:00 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:49
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:48:14
Pace8:15 /mi
📊Positive Split: 2.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5925:068:0525:06
8:05
-
10K
6.21 mi11:40:5350:008:0324:54
8:01
-0:04
15K
9.32 mi12:06:001:15:078:0425:07
8:05
+0:04
20K
12.43 mi12:31:141:40:218:0425:14
8:07
+0:02
Half
13.11 mi12:36:421:45:498:045:28
8:01
-0:06
25K
15.53 mi12:56:292:05:368:0519:47
8:10
+0:09
30K
18.64 mi13:22:272:31:348:0825:58
8:21
+0:11
20M
20.00 mi13:33:552:43:028:0911:28
8:26
+0:05
21M
21.00 mi13:42:532:52:008:118:58
8:58
+0:32
35K
21.75 mi13:48:582:58:058:116:05
8:08
-0:50
23M
23.00 mi13:59:123:08:198:1110:14
8:10
+0:02
24M
24.00 mi14:07:073:16:148:117:55
7:55
-0:15
40K
24.85 mi14:13:573:23:048:106:50
8:00
+0:05
25.2M
25.20 mi14:16:563:26:038:112:59
8:39
+0:39
Finish
26.22 mi14:24:563:34:038:108:00
7:51
-0:48

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

7:51 /mi

Average Pace

8:10 /mi

Slowest Pace

8:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:22:06

94% of race

Time at Steady Pace

11:57

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:10 /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 mi11:15:5925:068:0525:06
8:05
#14562
10K
6.21 mi11:40:5350:008:0324:54
8:01
#14721
15K
9.32 mi12:06:001:15:078:0425:07
8:05
#14820
20K
12.43 mi12:31:141:40:218:0425:14
8:07
#14691
Half
13.11 mi12:36:421:45:498:045:28
8:01
#14666
25K
15.53 mi12:56:292:05:368:0519:47
8:10
#14547
30K
18.64 mi13:22:272:31:348:0825:58
8:21
#14339
20M
20.00 mi13:33:552:43:028:0911:28
8:26
#14227
21M
21.00 mi13:42:532:52:008:118:58
8:58
#14139
35K
21.75 mi13:48:582:58:058:116:05
8:08
#14072
23M
23.00 mi13:59:123:08:198:1110:14
8:10
#13871
24M
24.00 mi14:07:073:16:148:117:55
7:55
#13706
40K
24.85 mi14:13:573:23:048:106:50
8:00
#13540
25.2M
25.20 mi14:16:563:26:038:112:59
8:39
#13465
Finish
26.22 mi14:24:563:34:038:108:00
7:51
#13349
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi145624362436215063(Top 57%)4707(Top 41%)4707(Top 96%)
10K6.21 mi3.10 mi14721-1594479-1174479-11714918(Top 56%)4619(Top 40%)4619(Top 95%)
15K9.32 mi3.11 mi14820-994548-694548-6915063(Top 57%)4707(Top 41%)4707(Top 96%)
20K12.43 mi3.11 mi14691+1294486+624486+6214377(Top 54%)4330(Top 38%)4330(Top 89%)
Half13.11 mi0.68 mi14666+254472+144472+1414500(Top 54%)4369(Top 38%)4369(Top 89%)
25K15.53 mi2.42 mi14547+1194433+394433+3913944(Top 52%)4180(Top 37%)4180(Top 86%)
30K18.64 mi3.11 mi14339+2084360+734360+7313412(Top 50%)3980(Top 35%)3980(Top 81%)
20M20.00 mi1.36 mi14227+1124308+524308+5213267(Top 50%)3999(Top 35%)3999(Top 82%)
21M21.00 mi1.00 mi14139+884273+354273+3513226(Top 50%)4061(Top 36%)4061(Top 83%)
35K21.75 mi0.75 mi14072+674241+324241+3213035(Top 49%)4021(Top 35%)4021(Top 82%)
23M23.00 mi1.25 mi13871+2014144+974144+9711036(Top 41%)3046(Top 27%)3046(Top 62%)
24M24.00 mi1.00 mi13706+1654070+744070+7410705(Top 40%)2949(Top 26%)2949(Top 60%)
40K24.85 mi0.85 mi13540+1663982+883982+8810055(Top 38%)2692(Top 24%)2692(Top 55%)
25.2M25.20 mi0.35 mi13465+753953+293953+2910559(Top 40%)2985(Top 26%)2985(Top 61%)
Finish26.22 mi1.02 mi13349+1163903+503903+5011077(Top 42%)3242(Top 28%)3242(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

15063

Females

4707

F18-39

4707

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14918

Females

4619

F18-39

4619

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

15063

Females

4707

F18-39

4707

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

14377

Females

4330

F18-39

4330

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

14500

Females

4369

F18-39

4369

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

13944

Females

4180

F18-39

4180

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

13412

Females

3980

F18-39

3980

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

13267

Females

3999

F18-39

3999

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

13226

Females

4061

F18-39

4061

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13035

Females

4021

F18-39

4021

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

11036

Females

3046

F18-39

3046

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

10705

Females

2949

F18-39

2949

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10055

Females

2692

F18-39

2692

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10559

Females

2985

F18-39

2985

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

11077

Females

3242

F18-39

3242

Passing Analysis

Category:
Athletes Passed
2282
Passed By
1069
Net Change
+1213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14562
5K → 10K225384-159#14562#14721
10K → 15K145244-99#14721#14820
15K → 20K246117+129#14820#14691
20K → Half4621+25#14691#14666
Half → 25K20384+119#14666#14547
25K → 30K28072+208#14547#14339
30K → 20M14432+112#14339#14227
20M → 21M13446+88#14227#14139
21M → 35K8417+67#14139#14072
35K → 23M2109+201#14072#13871
23M → 24M1749+165#13871#13706
24M → 40K1726+166#13706#13540
40K → 25.2M805+75#13540#13465
25.2M → Finish13923+116#13465#13349
TOTALS22821069+1213
📊

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