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BOSTON MARATHON 2025

Katie Zolnierz

Bib: 18847•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 34%
Masters (Masters Women)
#0 / 6759
Top 20%
Division (F40-44)
#0 / 1718
Top 41%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:03
Rank: #14310
Start → 5K
24:03 | 7:44/mi
10K· 6.21 mi
48:06
Rank: #14260 (+50)
5K → 10K
24:03 | 7:44/mi
15K· 9.32 mi
1:12:24
Rank: #14360 (-100)
10K → 15K
24:18 | 7:49/mi
20K· 12.43 mi
1:37:10
Rank: #14409 (-49)
15K → 20K
24:46 | 7:58/mi
Half· 13.11 mi
1:42:35
Rank: #14441 (-32)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:02:33
Rank: #14631 (-190)
Half → 25K
19:58 | 8:14/mi
30K· 18.64 mi
2:29:21
Rank: #14837 (-206)
25K → 30K
26:48 | 8:38/mi
20M
2:40:55
Rank: #14719 (+118)
30K → 20M
11:34 | 8:31/mi
21M
2:49:56
Rank: #14620 (+99)
20M → 21M
9:01 | 9:01/mi
35K· 21.75 mi
2:55:58
Rank: #14511 (+109)
21M → 35K
6:02 | 8:04/mi
23M
3:06:27
Rank: #14380 (+131)
35K → 23M
10:29 | 8:22/mi
24M
3:14:39
Rank: #14272 (+108)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:21:37
Rank: #14129 (+143)
24M → 40K
6:58 | 8:09/mi
25.2M
3:24:37
Rank: #14048 (+81)
40K → 25.2M
3:00 | 8:42/mi
Finish· 26.22 mi
3:32:12
Rank: #13803 (+245)
25.2M → Finish
7:35 | 7:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:35
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:49:37
Pace8:22 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2624:037:4424:03
7:44
-
10K
6.21 mi11:39:2948:067:4424:03
7:44
0:00
15K
9.32 mi12:03:471:12:247:4624:18
7:49
+0:05
20K
12.43 mi12:28:331:37:107:4924:46
7:58
+0:09
Half
13.11 mi12:33:581:42:357:505:25
7:56
-0:02
25K
15.53 mi12:53:562:02:337:5319:58
8:14
+0:18
30K
18.64 mi13:20:442:29:218:0126:48
8:38
+0:24
20M
20.00 mi13:32:182:40:558:0311:34
8:31
-0:07
21M
21.00 mi13:41:192:49:568:069:01
9:01
+0:30
35K
21.75 mi13:47:212:55:588:056:02
8:04
-0:57
23M
23.00 mi13:57:503:06:278:0610:29
8:22
+0:18
24M
24.00 mi14:06:023:14:398:078:12
8:12
-0:10
40K
24.85 mi14:13:003:21:378:076:58
8:09
-0:03
25.2M
25.20 mi14:16:003:24:378:073:00
8:42
+0:33
Finish
26.22 mi14:23:353:32:128:067:35
7:26
-1:16

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

7:26 /mi

Average Pace

8:06 /mi

Slowest Pace

9:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:24

40% of race

Time at Steady Pace

1:05:56

31% of race

Time at Slower Pace

1:00:52

29% of race

Average Pace: 8:06 /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 mi11:15:2624:037:4424:03
7:44
#14310
10K
6.21 mi11:39:2948:067:4424:03
7:44
#14260
15K
9.32 mi12:03:471:12:247:4624:18
7:49
#14360
20K
12.43 mi12:28:331:37:107:4924:46
7:58
#14409
Half
13.11 mi12:33:581:42:357:505:25
7:56
#14441
25K
15.53 mi12:53:562:02:337:5319:58
8:14
#14631
30K
18.64 mi13:20:442:29:218:0126:48
8:38
#14837
20M
20.00 mi13:32:182:40:558:0311:34
8:31
#14719
21M
21.00 mi13:41:192:49:568:069:01
9:01
#14620
35K
21.75 mi13:47:212:55:588:056:02
8:04
#14511
23M
23.00 mi13:57:503:06:278:0610:29
8:22
#14380
24M
24.00 mi14:06:023:14:398:078:12
8:12
#14272
40K
24.85 mi14:13:003:21:378:076:58
8:09
#14129
25.2M
25.20 mi14:16:003:24:378:073:00
8:42
#14048
Finish
26.22 mi14:23:353:32:128:067:35
7:26
#13803
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi143104109410914568(Top 51%)4347(Top 36%)4347(Top 253%)
10K6.21 mi3.10 mi14260+504093+164093+1614270(Top 50%)4116(Top 34%)4116(Top 240%)
15K9.32 mi3.11 mi14360-1004176-834176-8314568(Top 51%)4347(Top 36%)4347(Top 253%)
20K12.43 mi3.11 mi14409-494242-664242-6614722(Top 52%)4494(Top 37%)4494(Top 262%)
Half13.11 mi0.68 mi14441-324261-194261-1915441(Top 54%)4841(Top 40%)4841(Top 282%)
25K15.53 mi2.42 mi14631-1904412-1514412-15115526(Top 55%)5034(Top 41%)5034(Top 293%)
30K18.64 mi3.11 mi14837-2064585-1734585-17315530(Top 55%)5189(Top 42%)5189(Top 302%)
20M20.00 mi1.36 mi14719+1184538+474538+4713888(Top 49%)4454(Top 36%)4454(Top 259%)
21M21.00 mi1.00 mi14620+994509+294509+2913629(Top 48%)4424(Top 36%)4424(Top 258%)
35K21.75 mi0.75 mi14511+1094460+494460+4912735(Top 45%)4018(Top 33%)4018(Top 234%)
23M23.00 mi1.25 mi14380+1314426+344426+3412521(Top 44%)4006(Top 33%)4006(Top 233%)
24M24.00 mi1.00 mi14272+1084395+314395+3112589(Top 44%)4100(Top 34%)4100(Top 239%)
40K24.85 mi0.85 mi14129+1434352+434352+4311263(Top 40%)3547(Top 29%)3547(Top 206%)
25.2M25.20 mi0.35 mi14048+814314+384314+3810124(Top 36%)3111(Top 25%)3111(Top 181%)
Finish26.22 mi1.02 mi13803+2454213+1014213+1018830(Top 31%)2468(Top 20%)2468(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

14568

Females

4347

F40-44

4347

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

14270

Females

4116

F40-44

4116

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

14568

Females

4347

F40-44

4347

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

14722

Females

4494

F40-44

4494

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

15441

Females

4841

F40-44

4841

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

15526

Females

5034

F40-44

5034

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

15530

Females

5189

F40-44

5189

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

13888

Females

4454

F40-44

4454

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

13629

Females

4424

F40-44

4424

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

12735

Females

4018

F40-44

4018

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12521

Females

4006

F40-44

4006

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

12589

Females

4100

F40-44

4100

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11263

Females

3547

F40-44

3547

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

10124

Females

3111

F40-44

3111

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8830

Females

2468

F40-44

2468

Passing Analysis

Category:
Athletes Passed
2253
Passed By
1746
Net Change
+507
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14310
5K → 10K309259+50#14310#14260
10K → 15K168268-100#14260#14360
15K → 20K194243-49#14360#14409
20K → Half2961-32#14409#14441
Half → 25K121311-190#14441#14631
25K → 30K181387-206#14631#14837
30K → 20M18567+118#14837#14719
20M → 21M15455+99#14719#14620
21M → 35K12920+109#14620#14511
35K → 23M16635+131#14511#14380
23M → 24M12820+108#14380#14272
24M → 40K15411+143#14272#14129
40K → 25.2M854+81#14129#14048
25.2M → Finish2505+245#14048#13803
TOTALS22531746+507
📊

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