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BOSTON MARATHON 2025

Tessa Mulder

Bib: 15425•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 44%
Gender (Female)
#0 / 12228
Top 29%
Division (F18-39)
#0 / 5469
Top 47%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:43
Rank: #10503
Start → 5K
22:43 | 7:19/mi
10K· 6.21 mi
46:08
Rank: #11469 (-966)
5K → 10K
23:25 | 7:32/mi
15K· 9.32 mi
1:09:44
Rank: #11835 (-366)
10K → 15K
23:36 | 7:36/mi
20K· 12.43 mi
1:34:02
Rank: #12216 (-381)
15K → 20K
24:18 | 7:49/mi
Half· 13.11 mi
1:39:19
Rank: #12298 (-82)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
1:58:33
Rank: #12455 (-157)
Half → 25K
19:14 | 7:56/mi
30K· 18.64 mi
2:24:16
Rank: #12587 (-132)
25K → 30K
25:43 | 8:17/mi
20M
2:35:49
Rank: #12651 (-64)
30K → 20M
11:33 | 8:30/mi
21M
2:44:51
Rank: #12694 (-43)
20M → 21M
9:02 | 9:02/mi
35K· 21.75 mi
2:50:57
Rank: #12715 (-21)
21M → 35K
6:06 | 8:09/mi
23M
3:01:32
Rank: #12708 (+7)
35K → 23M
10:35 | 8:27/mi
24M
3:09:34
Rank: #12632 (+76)
23M → 24M
8:02 | 8:02/mi
40K· 24.85 mi
3:16:38
Rank: #12576 (+56)
24M → 40K
7:04 | 8:16/mi
25.2M
3:19:48
Rank: #12582 (-6)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:28:01
Rank: #12590 (-8)
25.2M → Finish
8:13 | 8:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:19
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:48:42
Pace8:18 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:1122:437:1922:43
7:19
-
10K
6.21 mi11:18:3646:087:2523:25
7:32
+0:13
15K
9.32 mi11:42:121:09:447:2923:36
7:36
+0:04
20K
12.43 mi12:06:301:34:027:3424:18
7:49
+0:13
Half
13.11 mi12:11:471:39:197:355:17
7:45
-0:04
25K
15.53 mi12:31:011:58:337:3819:14
7:56
+0:11
30K
18.64 mi12:56:442:24:167:4425:43
8:17
+0:21
20M
20.00 mi13:08:172:35:497:4711:33
8:30
+0:13
21M
21.00 mi13:17:192:44:517:519:02
9:02
+0:32
35K
21.75 mi13:23:252:50:577:526:06
8:09
-0:53
23M
23.00 mi13:34:003:01:327:5410:35
8:27
+0:18
24M
24.00 mi13:42:023:09:347:548:02
8:02
-0:25
40K
24.85 mi13:49:063:16:387:557:04
8:16
+0:14
25.2M
25.20 mi13:52:163:19:487:563:10
9:11
+0:55
Finish
26.22 mi14:00:293:28:017:568:13
8:04
-1:07

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

7:19 /mi

Average Pace

7:56 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:01

36% of race

Time at Steady Pace

1:38:40

47% of race

Time at Slower Pace

34:20

17% of race

Average Pace: 7:56 /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 mi10:55:1122:437:1922:43
7:19
#10503
10K
6.21 mi11:18:3646:087:2523:25
7:32
#11469
15K
9.32 mi11:42:121:09:447:2923:36
7:36
#11835
20K
12.43 mi12:06:301:34:027:3424:18
7:49
#12216
Half
13.11 mi12:11:471:39:197:355:17
7:45
#12298
25K
15.53 mi12:31:011:58:337:3819:14
7:56
#12455
30K
18.64 mi12:56:442:24:167:4425:43
8:17
#12587
20M
20.00 mi13:08:172:35:497:4711:33
8:30
#12651
21M
21.00 mi13:17:192:44:517:519:02
9:02
#12694
35K
21.75 mi13:23:252:50:577:526:06
8:09
#12715
23M
23.00 mi13:34:003:01:327:5410:35
8:27
#12708
24M
24.00 mi13:42:023:09:347:548:02
8:02
#12632
40K
24.85 mi13:49:063:16:387:557:04
8:16
#12576
25.2M
25.20 mi13:52:163:19:487:563:10
9:11
#12582
Finish
26.22 mi14:00:293:28:017:568:13
8:04
#12590
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi105032040204012582(Top 44%)3209(Top 26%)3209(Top 59%)
10K6.21 mi3.10 mi11469-9662539-4992539-49912455(Top 44%)3068(Top 25%)3068(Top 56%)
15K9.32 mi3.11 mi11835-3662734-1952734-19512582(Top 44%)3209(Top 26%)3209(Top 59%)
20K12.43 mi3.11 mi12216-3812990-2562990-25613457(Top 47%)3790(Top 31%)3790(Top 69%)
Half13.11 mi0.68 mi12298-823039-493039-4913816(Top 49%)3955(Top 32%)3955(Top 72%)
25K15.53 mi2.42 mi12455-1573167-1283167-12813371(Top 47%)3860(Top 32%)3860(Top 71%)
30K18.64 mi3.11 mi12587-1323318-1513318-15113345(Top 47%)4023(Top 33%)4023(Top 74%)
20M20.00 mi1.36 mi12651-643388-703388-7013790(Top 49%)4398(Top 36%)4398(Top 80%)
21M21.00 mi1.00 mi12694-433446-583446-5813714(Top 48%)4467(Top 37%)4467(Top 82%)
35K21.75 mi0.75 mi12715-213482-363482-3613316(Top 47%)4315(Top 35%)4315(Top 79%)
23M23.00 mi1.25 mi12708+73506-243506-2413021(Top 46%)4278(Top 35%)4278(Top 78%)
24M24.00 mi1.00 mi12632+763491+153491+1511507(Top 41%)3569(Top 29%)3569(Top 65%)
40K24.85 mi0.85 mi12576+563493-23493-211989(Top 42%)3910(Top 32%)3910(Top 71%)
25.2M25.20 mi0.35 mi12582-63512-193512-1912847(Top 45%)4405(Top 36%)4405(Top 81%)
Finish26.22 mi1.02 mi12590-83545-333545-3313330(Top 47%)4609(Top 38%)4609(Top 84%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21stories
+97ft-345ft

Overall

12582

Females

3209

F18-39

3209

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

12455

Females

3068

F18-39

3068

10K→15K

6.2 - 9.3 mi

Top 44%
×3stories
+67ft-78ft

Overall

12582

Females

3209

F18-39

3209

15K→20K

9.3 - 12.4 mi

Top 47%
×5stories
+106ft-86ft

Overall

13457

Females

3790

F18-39

3790

20K→Half

12.4 - 13.1 mi

Top 49%
×2stories
+19ft-37ft

Overall

13816

Females

3955

F18-39

3955

Half→25K

13.1 - 15.5 mi

Top 47%
×4stories
+66ft-88ft

Overall

13371

Females

3860

F18-39

3860

25K→30K

15.5 - 18.6 mi

Top 47%
×9stories
+181ft-148ft

Overall

13345

Females

4023

F18-39

4023

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

13790

Females

4398

F18-39

4398

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

13714

Females

4467

F18-39

4467

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

13316

Females

4315

F18-39

4315

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

13021

Females

4278

F18-39

4278

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11507

Females

3569

F18-39

3569

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11989

Females

3910

F18-39

3910

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12847

Females

4405

F18-39

4405

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

13330

Females

4609

F18-39

4609

Passing Analysis

Category:
Athletes Passed
1233
Passed By
3320
Net Change
-2087
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10503
5K → 10K391005-966#10503#11469
10K → 15K84450-366#11469#11835
15K → 20K103484-381#11835#12216
20K → Half688-82#12216#12298
Half → 25K114271-157#12298#12455
25K → 30K198330-132#12455#12587
30K → 20M95159-64#12587#12651
20M → 21M99142-43#12651#12694
21M → 35K5879-21#12694#12715
35K → 23M115108+7#12715#12708
23M → 24M10630+76#12708#12632
24M → 40K11155+56#12632#12576
40K → 25.2M3440-6#12576#12582
25.2M → Finish7179-8#12582#12590
TOTALS12333320-2087
📊

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