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BOSTON MARATHON 2025

Anna Slager

MA

Bib: 15784 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 22%
Gender (Female)
#0 / 12228
Top 6%
Division (F18-39)
#0 / 5469
Top 12%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:42/mi
20:49
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:43/mi
41:41
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:53/mi
1:03:04
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:48/mi
1:24:12
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:39/mi
1:28:44
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:46/mi
1:45:09
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:12/mi
2:07:32
↑ 181↓ 1480.2%
138 ft elev
20M
7:41/mi
2:17:58
↑ 64↓ 500.2%
148 ft elev
21M
8:26/mi
2:26:24
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:29/mi
2:32:00
↑ 17↓ 861.7%
156 ft elev
23M
8:11/mi
2:42:15
↑ 23↓ 630.6%
116 ft elev
24M
7:43/mi
2:49:58
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:51/mi
2:56:41
↓ 200.3%
20 ft elev
25.2M
8:45/mi
2:59:42
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:45/mi
3:07:36
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:28:446:46 /mi⚡ faster
2nd Half
1:38:527:33 /mi+11.4%
Positive split — 11.4% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
20:496:423.11 mi20:49
6:42
-
10K
41:416:423.10 mi20:52
6:43
+0:01
15K
1:03:046:463.11 mi21:23
6:53
+0:10
20K
1:24:126:473.11 mi21:08
6:48
-0:05
Half(13.11 mi)
1:28:446:460.68 mi4:32
6:39
-0:09
25K
1:45:096:462.42 mi16:25
6:46
+0:07
30K
2:07:326:503.11 mi22:23
7:12
+0:26
20M
2:17:586:541.36 mi10:26
7:41
+0:29
21M
2:26:246:581.00 mi8:26
8:26
+0:45
35K
2:32:006:590.75 mi5:36
7:29
-0:57
23M
2:42:157:031.25 mi10:15
8:11
+0:42
24M
2:49:587:051.00 mi7:43
7:43
-0:28
40K
2:56:417:070.85 mi6:43
7:51
+0:08
25.2M
2:59:427:080.35 mi3:01
8:45
+0:54
Finish(26.22 mi)
3:07:367:101.02 mi7:54
7:45
-1:00
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:39 /mi

Average Pace

7:10 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:45:09

56% of race

Time at Steady Pace

54:02

29% of race

Time at Slower Pace

28:25

15% of race

Average Pace: 7:09 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi54753863866837692692
10K3.10 mi5461+14402-16402-165510425425
15K3.11 mi5894-433475-73475-736837692692
20K3.11 mi5722+172457+18457+185337430430
Half(13.11 mi)0.68 mi5670+52451+6451+64909357357
25K2.42 mi5455+215427+24427+244673357357
30K3.11 mi5525-70457-30457-305942658658
20M1.36 mi5728-203503-46503-46820816121612
21M1.00 mi5889-161556-53556-531005826242624
35K0.75 mi5962-73581-25581-25852518911891
23M1.25 mi6147-185643-62643-621128433633363
24M1.00 mi6203-56671-28671-28921824162416
40K0.85 mi6248-45707-36707-36918425282528
25.2M0.35 mi6288-40734-27734-271031231483148
Finish(26.22 mi)1.02 mi6375-87781-47781-471109634943494

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21story building
+97ft-345ft

Overall

6837

Females

692

F18-39

692

5K→10K

3.1 - 6.2 mi

Top 19%
×5story building
+79ft-138ft

Overall

5510

Females

425

F18-39

425

10K→15K

6.2 - 9.3 mi

Top 24%
×3story building
+67ft-78ft

Overall

6837

Females

692

F18-39

692

15K→20K

9.3 - 12.4 mi

Top 19%
×5story building
+106ft-86ft

Overall

5337

Females

430

F18-39

430

20K→Half

12.4 - 13.1 mi

Top 17%
×2story building
+19ft-37ft

Overall

4909

Females

357

F18-39

357

Half→25K

13.1 - 15.5 mi

Top 16%
×4story building
+66ft-88ft

Overall

4673

Females

357

F18-39

357

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

5942

Females

658

F18-39

658

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

8208

Females

1612

F18-39

1612

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

10058

Females

2624

F18-39

2624

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8525

Females

1891

F18-39

1891

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

11284

Females

3363

F18-39

3363

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

9218

Females

2416

F18-39

2416

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9184

Females

2528

F18-39

2528

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

10312

Females

3148

F18-39

3148

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

11096

Females

3494

F18-39

3494

Passing Analysis

Category:
Passed
1160
Passed By
2060
Net Change
-900
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5475
5K → 10K195181+14#5475#5461
10K → 15K41474-433#5461#5894
15K → 20K22250+172#5894#5722
20K → Half586+52#5722#5670
Half → 25K23924+215#5670#5455
25K → 30K160230-70#5455#5525
30K → 20M18221-203#5525#5728
20M → 21M30191-161#5728#5889
21M → 35K2497-73#5889#5962
35K → 23M47232-185#5962#6147
23M → 24M3995-56#6147#6203
24M → 40K4085-45#6203#6248
40K → 25.2M1959-40#6248#6288
25.2M → Finish28115-87#6288#6375
TOTALS11602060-900

Passing Charts

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