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BOSTON MARATHON 2025

Julia Boers

Bib: 12310•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 39%
Gender (Female)
#0 / 12228
Top 23%
Division (F18-39)
#0 / 5469
Top 39%
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
7:49/mi
24:16
↑ 97↓ 3451.5%
10K· 6.21 mi
7:50/mi
48:36
↑ 79↓ 1380.4%
15K· 9.32 mi
8:08/mi
1:13:51
↑ 67↓ 78
20K· 12.43 mi
7:37/mi
1:37:31
↑ 106↓ 860.1%
Half· 13.11 mi
7:29/mi
1:42:37
↑ 19↓ 370.5%
25K· 15.53 mi
7:50/mi
2:01:37
↑ 66↓ 880.2%
30K· 18.64 mi
7:56/mi
2:26:17
↑ 181↓ 1480.2%
20M
7:49/mi
2:36:54
↑ 64↓ 500.2%
21M
8:01/mi
2:44:55
↑ 106↓ 241.6%
35K· 21.75 mi
6:58/mi
2:50:08
↑ 17↓ 861.7%
23M
7:32/mi
2:59:34
↑ 23↓ 630.6%
24M
7:21/mi
3:06:55
↓ 821.3%
40K· 24.85 mi
7:12/mi
3:13:04
↓ 200.3%
25.2M
8:10/mi
3:15:53
↑ 13↓ 160.2%
Finish· 26.22 mi
7:13/mi
3:23:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:42:37
Pace7:50 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:40:37
Pace7:41 /mi
📊Negative Split: 1.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:2024:167:4924:16
7:49
-
10K
6.21 mi12:07:4048:367:4924:20
7:50
+0:01
15K
9.32 mi12:32:551:13:517:5525:15
8:08
+0:18
20K
12.43 mi12:56:351:37:317:5123:40
7:37
-0:31
Half
13.11 mi13:01:411:42:377:505:06
7:29
-0:08
25K
15.53 mi13:20:412:01:377:5019:00
7:50
+0:21
30K
18.64 mi13:45:212:26:177:5124:40
7:56
+0:06
20M
20.00 mi13:55:582:36:547:5110:37
7:49
-0:07
21M
21.00 mi14:03:592:44:557:518:01
8:01
+0:12
35K
21.75 mi14:09:122:50:087:495:13
6:58
-1:03
23M
23.00 mi14:18:382:59:347:489:26
7:32
+0:34
24M
24.00 mi14:25:593:06:557:477:21
7:21
-0:11
40K
24.85 mi14:32:083:13:047:466:09
7:12
-0:09
25.2M
25.20 mi14:34:573:15:537:462:49
8:10
+0:58
Finish
26.22 mi14:42:183:23:147:457:21
7:13
-0:57

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

6:58 /mi

Average Pace

7:45 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:04:16

32% of race

Time at Steady Pace

2:18:58

68% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:45 /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 mi11:43:2024:167:4924:16
7:49
#14898
10K
6.21 mi12:07:4048:367:4924:20
7:50
#14956
15K
9.32 mi12:32:551:13:517:5525:15
8:08
#15704
20K
12.43 mi12:56:351:37:317:5123:40
7:37
#14643
Half
13.11 mi13:01:411:42:377:505:06
7:29
#14452
25K
15.53 mi13:20:412:01:377:5019:00
7:50
#14118
30K
18.64 mi13:45:212:26:177:5124:40
7:56
#13461
20M
20.00 mi13:55:582:36:547:5110:37
7:49
#13085
21M
21.00 mi14:03:592:44:557:518:01
8:01
#12719
35K
21.75 mi14:09:122:50:087:495:13
6:58
#12400
23M
23.00 mi14:18:382:59:347:489:26
7:32
#12022
24M
24.00 mi14:25:593:06:557:477:21
7:21
#11758
40K
24.85 mi14:32:083:13:047:466:09
7:12
#11420
25.2M
25.20 mi14:34:573:15:537:462:49
8:10
#11312
Finish
26.22 mi14:42:183:23:147:457:21
7:13
#11100
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi148984457445716924(Top 60%)5685(Top 46%)5685(Top 104%)
10K6.21 mi3.10 mi14956-584520-634520-6315109(Top 53%)4597(Top 38%)4597(Top 84%)
15K9.32 mi3.11 mi15704-7484952-4324952-43216924(Top 60%)5685(Top 46%)5685(Top 104%)
20K12.43 mi3.11 mi14643+10614369+5834369+58311733(Top 41%)2854(Top 23%)2854(Top 52%)
Half13.11 mi0.68 mi14452+1914267+1024267+10211558(Top 41%)2717(Top 22%)2717(Top 50%)
25K15.53 mi2.42 mi14118+3344108+1594108+15912637(Top 44%)3461(Top 28%)3461(Top 63%)
30K18.64 mi3.11 mi13461+6573792+3163792+31610958(Top 39%)2759(Top 23%)2759(Top 50%)
20M20.00 mi1.36 mi13085+3763628+1643628+1649151(Top 32%)2056(Top 17%)2056(Top 38%)
21M21.00 mi1.00 mi12719+3663455+1733455+1737481(Top 26%)1515(Top 12%)1515(Top 28%)
35K21.75 mi0.75 mi12400+3193312+1433312+1435246(Top 18%)703(Top 6%)703(Top 13%)
23M23.00 mi1.25 mi12022+3783144+1683144+1686864(Top 24%)1347(Top 11%)1347(Top 25%)
24M24.00 mi1.00 mi11758+2643054+903054+906769(Top 24%)1378(Top 11%)1378(Top 25%)
40K24.85 mi0.85 mi11420+3382915+1392915+1395065(Top 18%)812(Top 7%)812(Top 15%)
25.2M25.20 mi0.35 mi11312+1082882+332882+336988(Top 25%)1660(Top 14%)1660(Top 30%)
Finish26.22 mi1.02 mi11100+2122799+832799+837160(Top 25%)1719(Top 14%)1719(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16924

Females

5685

F18-39

5685

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

15109

Females

4597

F18-39

4597

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16924

Females

5685

F18-39

5685

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11733

Females

2854

F18-39

2854

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11558

Females

2717

F18-39

2717

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12637

Females

3461

F18-39

3461

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

10958

Females

2759

F18-39

2759

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

9151

Females

2056

F18-39

2056

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

7481

Females

1515

F18-39

1515

21M→35K

21.0 - 21.8 mi

Top 18%
×7story building
+17ft-86ft

Overall

5246

Females

703

F18-39

703

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6864

Females

1347

F18-39

1347

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6769

Females

1378

F18-39

1378

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5065

Females

812

F18-39

812

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6988

Females

1660

F18-39

1660

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2story building
+22ft-21ft

Overall

7160

Females

1719

F18-39

1719

Passing Analysis

Category:
Athletes Passed
4966
Passed By
1168
Net Change
+3798
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14898
5K → 10K262320-58#14898#14956
10K → 15K55803-748#14956#15704
15K → 20K10610+1061#15704#14643
20K → Half1910+191#14643#14452
Half → 25K35622+334#14452#14118
25K → 30K6658+657#14118#13461
30K → 20M3771+376#13461#13085
20M → 21M3693+366#13085#12719
21M → 35K3190+319#12719#12400
35K → 23M3780+378#12400#12022
23M → 24M2662+264#12022#11758
24M → 40K3380+338#11758#11420
40K → 25.2M1091+108#11420#11312
25.2M → Finish2208+212#11312#11100
TOTALS49661168+3798
📊

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