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BOSTON MARATHON 2025

Marisa Seitz

Bib: 16270•F

OH

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Division (F18-39)
#0 / 5469
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
8:05/mi
25:06
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
49:58
↑ 79↓ 1380.4%
15K· 9.32 mi
7:58/mi
1:14:42
↑ 67↓ 78
20K· 12.43 mi
7:57/mi
1:39:25
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:44:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:52/mi
2:03:52
↑ 66↓ 880.2%
30K· 18.64 mi
8:07/mi
2:29:06
↑ 181↓ 1480.2%
20M
8:30/mi
2:40:39
↑ 64↓ 500.2%
21M
9:12/mi
2:49:51
↑ 106↓ 241.6%
35K· 21.75 mi
7:57/mi
2:55:48
↑ 17↓ 861.7%
23M
8:32/mi
3:06:29
↑ 23↓ 630.6%
24M
8:35/mi
3:15:04
↓ 821.3%
40K· 24.85 mi
8:37/mi
3:22:26
↓ 200.3%
25.2M
9:23/mi
3:25:40
↑ 13↓ 160.2%
Finish· 26.22 mi
8:09/mi
3:33:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:48
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:49:10
Pace8:20 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:59:0125:068:0525:06
8:05
-
10K
6.21 mi11:23:5349:588:0224:52
8:00
-0:05
15K
9.32 mi11:48:371:14:428:0124:44
7:58
-0:02
20K
12.43 mi12:13:201:39:258:0024:43
7:57
-0:01
Half
13.11 mi12:18:431:44:488:005:23
7:53
-0:04
25K
15.53 mi12:37:472:03:527:5819:04
7:52
-0:01
30K
18.64 mi13:03:012:29:068:0025:14
8:07
+0:15
20M
20.00 mi13:14:342:40:398:0211:33
8:30
+0:23
21M
21.00 mi13:23:462:49:518:059:12
9:12
+0:42
35K
21.75 mi13:29:432:55:488:055:57
7:57
-1:15
23M
23.00 mi13:40:243:06:298:0610:41
8:32
+0:35
24M
24.00 mi13:48:593:15:048:088:35
8:35
+0:03
40K
24.85 mi13:56:213:22:268:097:22
8:37
+0:02
25.2M
25.20 mi13:59:353:25:408:103:14
9:23
+0:46
Finish
26.22 mi14:07:533:33:588:108:18
8:09
-1:14

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

7:52 /mi

Average Pace

8:10 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:32

94% of race

Time at Steady Pace

9:12

4% of race

Time at Slower Pace

3:14

2% 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 mi10:59:0125:068:0525:06
8:05
#17220
10K
6.21 mi11:23:5349:588:0224:52
8:00
#16847
15K
9.32 mi11:48:371:14:428:0124:44
7:58
#16444
20K
12.43 mi12:13:201:39:258:0024:43
7:57
#15924
Half
13.11 mi12:18:431:44:488:005:23
7:53
#15882
25K
15.53 mi12:37:472:03:527:5819:04
7:52
#15356
30K
18.64 mi13:03:012:29:068:0025:14
8:07
#14723
20M
20.00 mi13:14:342:40:398:0211:33
8:30
#14614
21M
21.00 mi13:23:462:49:518:059:12
9:12
#14588
35K
21.75 mi13:29:432:55:488:055:57
7:57
#14460
23M
23.00 mi13:40:243:06:298:0610:41
8:32
#14390
24M
24.00 mi13:48:593:15:048:088:35
8:35
#14396
40K
24.85 mi13:56:213:22:268:097:22
8:37
#14355
25.2M
25.20 mi13:59:353:25:408:103:14
9:23
#14337
Finish
26.22 mi14:07:533:33:588:108:18
8:09
#14283
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi172205867586715749(Top 55%)4998(Top 41%)4998(Top 91%)
10K6.21 mi3.10 mi16847+3735636+2315636+23116521(Top 58%)5431(Top 44%)5431(Top 99%)
15K9.32 mi3.11 mi16444+4035403+2335403+23315749(Top 55%)4998(Top 41%)4998(Top 91%)
20K12.43 mi3.11 mi15924+5205101+3025101+30214590(Top 51%)4423(Top 36%)4423(Top 81%)
Half13.11 mi0.68 mi15882+425083+185083+1815058(Top 53%)4641(Top 38%)4641(Top 85%)
25K15.53 mi2.42 mi15356+5264805+2784805+27812884(Top 45%)3611(Top 30%)3611(Top 66%)
30K18.64 mi3.11 mi14723+6334520+2854520+28512272(Top 43%)3434(Top 28%)3434(Top 63%)
20M20.00 mi1.36 mi14614+1094481+394481+3913804(Top 49%)4412(Top 36%)4412(Top 81%)
21M21.00 mi1.00 mi14588+264493-124493-1214644(Top 52%)4962(Top 41%)4962(Top 91%)
35K21.75 mi0.75 mi14460+1284429+644429+6412004(Top 42%)3661(Top 30%)3661(Top 67%)
23M23.00 mi1.25 mi14390+704432-34432-313538(Top 48%)4544(Top 37%)4544(Top 83%)
24M24.00 mi1.00 mi14396-64450-184450-1815062(Top 53%)5403(Top 44%)5403(Top 99%)
40K24.85 mi0.85 mi14355+414473-234473-2314169(Top 50%)5049(Top 41%)5049(Top 92%)
25.2M25.20 mi0.35 mi14337+184473447313924(Top 49%)4967(Top 41%)4967(Top 91%)
Finish26.22 mi1.02 mi14283+544471+24471+213923(Top 49%)4913(Top 40%)4913(Top 90%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

15749

Females

4998

F18-39

4998

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16521

Females

5431

F18-39

5431

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

15749

Females

4998

F18-39

4998

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

14590

Females

4423

F18-39

4423

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

15058

Females

4641

F18-39

4641

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12884

Females

3611

F18-39

3611

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

12272

Females

3434

F18-39

3434

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

13804

Females

4412

F18-39

4412

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14644

Females

4962

F18-39

4962

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

12004

Females

3661

F18-39

3661

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13538

Females

4544

F18-39

4544

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

15062

Females

5403

F18-39

5403

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14169

Females

5049

F18-39

5049

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13924

Females

4967

F18-39

4967

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13923

Females

4913

F18-39

4913

Passing Analysis

Category:
Athletes Passed
3637
Passed By
700
Net Change
+2937
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17220
5K → 10K524151+373#17220#16847
10K → 15K44744+403#16847#16444
15K → 20K54626+520#16444#15924
20K → Half5816+42#15924#15882
Half → 25K5326+526#15882#15356
25K → 30K65118+633#15356#14723
30K → 20M19384+109#14723#14614
20M → 21M11690+26#14614#14588
21M → 35K14113+128#14588#14460
35K → 23M13161+70#14460#14390
23M → 24M6975-6#14390#14396
24M → 40K9352+41#14396#14355
40K → 25.2M3618+18#14355#14337
25.2M → Finish10046+54#14337#14283
TOTALS3637700+2937
📊

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