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BOSTON MARATHON 2025

Allison Tanaka

Bib: 19541•F

ON

0:00
0:00
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
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
7:52/mi
24:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:54/mi
48:59
↑ 79↓ 1380.4%
15K· 9.32 mi
7:52/mi
1:13:24
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:38:37
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:44:13
↑ 19↓ 370.5%
25K· 15.53 mi
8:13/mi
2:04:08
↑ 66↓ 880.2%
30K· 18.64 mi
8:48/mi
2:31:27
↑ 181↓ 1480.2%
20M
9:16/mi
2:44:03
↑ 64↓ 500.2%
21M
10:27/mi
2:54:30
↑ 106↓ 241.6%
35K· 21.75 mi
9:19/mi
3:01:28
↑ 17↓ 861.7%
23M
9:07/mi
3:12:53
↑ 23↓ 630.6%
24M
8:53/mi
3:21:46
↓ 821.3%
40K· 24.85 mi
8:58/mi
3:29:26
↓ 200.3%
25.2M
11:10/mi
3:33:17
↑ 13↓ 160.2%
Finish· 26.22 mi
9:25/mi
3:42:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:13
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:58:40
Pace9:03 /mi
📊Positive Split: 13.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0124:257:5224:25
7:52
-
10K
6.21 mi11:40:3548:597:5324:34
7:54
+0:02
15K
9.32 mi12:05:001:13:247:5324:25
7:52
-0:02
20K
12.43 mi12:30:131:38:377:5625:13
8:07
+0:15
Half
13.11 mi12:35:491:44:137:575:36
8:12
+0:05
25K
15.53 mi12:55:442:04:087:5919:55
8:13
+0:01
30K
18.64 mi13:23:032:31:278:0727:19
8:48
+0:35
20M
20.00 mi13:35:392:44:038:1212:36
9:16
+0:28
21M
21.00 mi13:46:062:54:308:1910:27
10:27
+1:11
35K
21.75 mi13:53:043:01:288:216:58
9:19
-1:08
23M
23.00 mi14:04:293:12:538:2311:25
9:07
-0:12
24M
24.00 mi14:13:223:21:468:248:53
8:53
-0:14
40K
24.85 mi14:21:023:29:268:267:40
8:58
+0:05
25.2M
25.20 mi14:24:533:33:178:283:51
11:10
+2:12
Finish
26.22 mi14:34:293:42:538:309:36
9:25
-1:45

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

8:30 /mi

Slowest Pace

11:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:08

56% of race

Time at Steady Pace

1:14:51

34% of race

Time at Slower Pace

23:54

11% of race

Average Pace: 8:30 /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 mi11:16:0124:257:5224:25
7:52
#15349
10K
6.21 mi11:40:3548:597:5324:34
7:54
#15517
15K
9.32 mi12:05:001:13:247:5324:25
7:52
#15293
20K
12.43 mi12:30:131:38:377:5625:13
8:07
#15415
Half
13.11 mi12:35:491:44:137:575:36
8:12
#15541
25K
15.53 mi12:55:442:04:087:5919:55
8:13
#15477
30K
18.64 mi13:23:032:31:278:0727:19
8:48
#15697
20M
20.00 mi13:35:392:44:038:1212:36
9:16
#15880
21M
21.00 mi13:46:062:54:308:1910:27
10:27
#16142
35K
21.75 mi13:53:043:01:288:216:58
9:19
#16261
23M
23.00 mi14:04:293:12:538:2311:25
9:07
#16244
24M
24.00 mi14:13:223:21:468:248:53
8:53
#16246
40K
24.85 mi14:21:023:29:268:267:40
8:58
#16251
25.2M
25.20 mi14:24:533:33:178:283:51
11:10
#16374
Finish
26.22 mi14:34:293:42:538:309:36
9:25
#16597
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi153494752475214917(Top 53%)4544(Top 37%)4544(Top 83%)
10K6.21 mi3.10 mi15517-1684853-1014853-10115730(Top 55%)4969(Top 41%)4969(Top 91%)
15K9.32 mi3.11 mi15293+2244729+1244729+12414917(Top 53%)4544(Top 37%)4544(Top 83%)
20K12.43 mi3.11 mi15415-1224816-874816-8715773(Top 56%)5082(Top 42%)5082(Top 93%)
Half13.11 mi0.68 mi15541-1264889-734889-7317358(Top 61%)5957(Top 49%)5957(Top 109%)
25K15.53 mi2.42 mi15477+644875+144875+1415416(Top 54%)4969(Top 41%)4969(Top 91%)
30K18.64 mi3.11 mi15697-2205048-1735048-17316570(Top 58%)5786(Top 47%)5786(Top 106%)
20M20.00 mi1.36 mi15880-1835204-1565204-15618163(Top 64%)6803(Top 56%)6803(Top 124%)
21M21.00 mi1.00 mi16142-2625378-1745378-17419850(Top 70%)7821(Top 64%)7821(Top 143%)
35K21.75 mi0.75 mi16261-1195473-955473-9519627(Top 69%)7775(Top 64%)7775(Top 142%)
23M23.00 mi1.25 mi16244+175489-165489-1616935(Top 60%)6410(Top 52%)6410(Top 117%)
24M24.00 mi1.00 mi16246-25519-305519-3016772(Top 59%)6362(Top 52%)6362(Top 116%)
40K24.85 mi0.85 mi16251-55544-255544-2516124(Top 57%)6105(Top 50%)6105(Top 112%)
25.2M25.20 mi0.35 mi16374-1235629-855629-8521130(Top 74%)8713(Top 71%)8713(Top 159%)
Finish26.22 mi1.02 mi16597-2235784-1555784-15520898(Top 74%)8601(Top 70%)8601(Top 157%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14917

Females

4544

F18-39

4544

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

15730

Females

4969

F18-39

4969

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14917

Females

4544

F18-39

4544

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15773

Females

5082

F18-39

5082

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17358

Females

5957

F18-39

5957

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15416

Females

4969

F18-39

4969

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16570

Females

5786

F18-39

5786

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18163

Females

6803

F18-39

6803

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

19850

Females

7821

F18-39

7821

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

19627

Females

7775

F18-39

7775

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

16935

Females

6410

F18-39

6410

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

16772

Females

6362

F18-39

6362

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16124

Females

6105

F18-39

6105

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

21130

Females

8713

F18-39

8713

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

20898

Females

8601

F18-39

8601

Passing Analysis

Category:
Athletes Passed
1545
Passed By
2793
Net Change
-1248
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15349
5K → 10K233401-168#15349#15517
10K → 15K31591+224#15517#15293
15K → 20K171293-122#15293#15415
20K → Half9135-126#15415#15541
Half → 25K199135+64#15541#15477
25K → 30K168388-220#15477#15697
30K → 20M71254-183#15697#15880
20M → 21M45307-262#15880#16142
21M → 35K37156-119#16142#16261
35K → 23M120103+17#16261#16244
23M → 24M7981-2#16244#16246
24M → 40K6368-5#16246#16251
40K → 25.2M6129-123#16251#16374
25.2M → Finish29252-223#16374#16597
TOTALS15452793-1248
📊

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