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BOSTON MARATHON 2025

Kathleen Zgorski

Bib: 15456•F

MD

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 27%
Gender (Female)
#0 / 12228
Top 10%
Division (F18-39)
#0 / 5469
Top 19%
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
7:14/mi
22:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:15/mi
45:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:15/mi
1:07:33
↑ 67↓ 78
20K· 12.43 mi
7:17/mi
1:30:12
↑ 106↓ 860.1%
Half· 13.11 mi
7:14/mi
1:35:08
↑ 19↓ 370.5%
25K· 15.53 mi
7:19/mi
1:52:52
↑ 66↓ 880.2%
30K· 18.64 mi
7:29/mi
2:16:07
↑ 181↓ 1480.2%
20M
7:29/mi
2:26:17
↑ 64↓ 500.2%
21M
7:45/mi
2:34:02
↑ 106↓ 241.6%
35K· 21.75 mi
7:21/mi
2:39:32
↑ 17↓ 861.7%
23M
7:30/mi
2:48:56
↑ 23↓ 630.6%
24M
7:16/mi
2:56:12
↓ 821.3%
40K· 24.85 mi
7:23/mi
3:02:31
↓ 200.3%
25.2M
7:44/mi
3:05:11
↑ 13↓ 160.2%
Finish· 26.22 mi
6:54/mi
3:12:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:08
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:37:05
Pace7:24 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:1822:297:1422:29
7:14
-
10K
6.21 mi11:17:5145:027:1522:33
7:15
+0:01
15K
9.32 mi11:40:221:07:337:1522:31
7:15
0:00
20K
12.43 mi12:03:011:30:127:1522:39
7:17
+0:02
Half
13.11 mi12:07:571:35:087:154:56
7:14
-0:03
25K
15.53 mi12:25:411:52:527:1617:44
7:19
+0:05
30K
18.64 mi12:48:562:16:077:1823:15
7:29
+0:10
20M
20.00 mi12:59:062:26:177:1910:10
7:29
0:00
21M
21.00 mi13:06:512:34:027:207:45
7:45
+0:16
35K
21.75 mi13:12:212:39:327:205:30
7:21
-0:24
23M
23.00 mi13:21:452:48:567:219:24
7:30
+0:09
24M
24.00 mi13:29:012:56:127:217:16
7:16
-0:14
40K
24.85 mi13:35:203:02:317:216:19
7:23
+0:07
25.2M
25.20 mi13:38:003:05:117:212:40
7:44
+0:21
Finish
26.22 mi13:45:023:12:137:207:02
6:54
-0:50

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

6:54 /mi

Average Pace

7:20 /mi

Slowest Pace

7:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:48

95% of race

Time at Steady Pace

10:25

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:20 /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 mi10:55:1822:297:1422:29
7:14
#9802
10K
6.21 mi11:17:5145:027:1522:33
7:15
#9863
15K
9.32 mi11:40:221:07:337:1522:31
7:15
#9725
20K
12.43 mi12:03:011:30:127:1522:39
7:17
#9487
Half
13.11 mi12:07:571:35:087:154:56
7:14
#9464
25K
15.53 mi12:25:411:52:527:1617:44
7:19
#9273
30K
18.64 mi12:48:562:16:077:1823:15
7:29
#8852
20M
20.00 mi12:59:062:26:177:1910:10
7:29
#8648
21M
21.00 mi13:06:512:34:027:207:45
7:45
#8424
35K
21.75 mi13:12:212:39:327:205:30
7:21
#8358
23M
23.00 mi13:21:452:48:567:219:24
7:30
#8185
24M
24.00 mi13:29:012:56:127:217:16
7:16
#8037
40K
24.85 mi13:35:203:02:317:216:19
7:23
#7928
25.2M
25.20 mi13:38:003:05:117:212:40
7:44
#7827
Finish
26.22 mi13:45:023:12:137:207:02
6:54
#7667
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9802171517159538(Top 34%)1666(Top 14%)1666(Top 30%)
10K6.21 mi3.10 mi9863-611737-221737-229992(Top 35%)1824(Top 15%)1824(Top 33%)
15K9.32 mi3.11 mi9725+1381704+331704+339538(Top 34%)1666(Top 14%)1666(Top 30%)
20K12.43 mi3.11 mi9487+2381632+721632+728984(Top 32%)1511(Top 12%)1511(Top 28%)
Half13.11 mi0.68 mi9464+231630+21630+29409(Top 33%)1652(Top 14%)1652(Top 30%)
25K15.53 mi2.42 mi9273+1911571+591571+598475(Top 30%)1404(Top 11%)1404(Top 26%)
30K18.64 mi3.11 mi8852+4211444+1271444+1277646(Top 27%)1249(Top 10%)1249(Top 23%)
20M20.00 mi1.36 mi8648+2041397+471397+476903(Top 24%)1114(Top 9%)1114(Top 20%)
21M21.00 mi1.00 mi8424+2241340+571340+575944(Top 21%)899(Top 7%)899(Top 16%)
35K21.75 mi0.75 mi8358+661330+101330+107589(Top 27%)1518(Top 12%)1518(Top 28%)
23M23.00 mi1.25 mi8185+1731307+231307+236680(Top 24%)1255(Top 10%)1255(Top 23%)
24M24.00 mi1.00 mi8037+1481297+101297+106250(Top 22%)1165(Top 10%)1165(Top 21%)
40K24.85 mi0.85 mi7928+1091282+151282+156163(Top 22%)1203(Top 10%)1203(Top 22%)
25.2M25.20 mi0.35 mi7827+1011257+251257+254613(Top 16%)760(Top 6%)760(Top 14%)
Finish26.22 mi1.02 mi7667+1601232+251232+255138(Top 18%)911(Top 7%)911(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9538

Females

1666

F18-39

1666

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9992

Females

1824

F18-39

1824

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9538

Females

1666

F18-39

1666

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8984

Females

1511

F18-39

1511

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

9409

Females

1652

F18-39

1652

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

8475

Females

1404

F18-39

1404

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7646

Females

1249

F18-39

1249

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6903

Females

1114

F18-39

1114

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

5944

Females

899

F18-39

899

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7589

Females

1518

F18-39

1518

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6680

Females

1255

F18-39

1255

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

6250

Females

1165

F18-39

1165

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

6163

Females

1203

F18-39

1203

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4613

Females

760

F18-39

760

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

5138

Females

911

F18-39

911

Passing Analysis

Category:
Athletes Passed
2786
Passed By
649
Net Change
+2135
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9802
5K → 10K197257-61#9802#9863
10K → 15K23899+138#9863#9725
15K → 20K29860+238#9725#9487
20K → Half4623+23#9487#9464
Half → 25K24554+191#9464#9273
25K → 30K46443+421#9273#8852
30K → 20M21814+204#8852#8648
20M → 21M23612+224#8648#8424
21M → 35K9024+66#8424#8358
35K → 23M19926+173#8358#8185
23M → 24M16618+148#8185#8037
24M → 40K12314+109#8037#7928
40K → 25.2M1021+101#7928#7827
25.2M → Finish1644+160#7827#7667
TOTALS2786649+2135
📊

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