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BOSTON MARATHON 2025

Anna Clark

Bib: 27853•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
8:48/mi
27:19
↑ 97↓ 3451.5%
10K· 6.21 mi
9:01/mi
55:19
↑ 79↓ 1380.4%
15K· 9.32 mi
9:19/mi
1:24:17
↑ 67↓ 78
20K· 12.43 mi
9:54/mi
1:55:03
↑ 106↓ 860.1%
Half· 13.11 mi
9:58/mi
2:01:51
↑ 19↓ 370.5%
25K· 15.53 mi
10:32/mi
2:27:24
↑ 66↓ 880.2%
30K· 18.64 mi
11:28/mi
3:03:02
↑ 181↓ 1480.2%
20M
11:38/mi
3:18:50
↑ 64↓ 500.2%
21M
12:14/mi
3:31:04
↑ 106↓ 241.6%
35K· 21.75 mi
11:30/mi
3:39:40
↑ 17↓ 861.7%
23M
11:40/mi
3:54:17
↑ 23↓ 630.6%
24M
11:28/mi
4:05:45
↓ 821.3%
40K· 24.85 mi
11:46/mi
4:15:49
↓ 200.3%
25.2M
12:25/mi
4:20:06
↑ 13↓ 160.2%
Finish· 26.22 mi
10:50/mi
4:31:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:51
Pace9:18 /mi
2nd Half
Distance13.11 mi
Time2:29:17
Pace11:23 /mi
📊Positive Split: 22.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:2527:198:4827:19
8:48
-
10K
6.21 mi12:12:2555:198:5428:00
9:01
+0:13
15K
9.32 mi12:41:231:24:179:0328:58
9:19
+0:18
20K
12.43 mi13:12:091:55:039:1530:46
9:54
+0:35
Half
13.11 mi13:18:572:01:519:186:48
9:58
+0:04
25K
15.53 mi13:44:302:27:249:2925:33
10:32
+0:34
30K
18.64 mi14:20:083:03:029:4935:38
11:28
+0:56
20M
20.00 mi14:35:563:18:509:5615:48
11:38
+0:10
21M
21.00 mi14:48:103:31:0410:0312:14
12:14
+0:36
35K
21.75 mi14:56:463:39:4010:068:36
11:30
-0:44
23M
23.00 mi15:11:233:54:1710:1114:37
11:40
+0:10
24M
24.00 mi15:22:514:05:4510:1411:28
11:28
-0:12
40K
24.85 mi15:32:554:15:4910:1810:04
11:46
+0:18
25.2M
25.20 mi15:37:124:20:0610:194:17
12:25
+0:39
Finish
26.22 mi15:48:144:31:0810:2111:02
10:50
-1:35

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

8:48 /mi

Average Pace

10:21 /mi

Slowest Pace

12:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:26

58% of race

Time at Steady Pace

1:36:11

35% of race

Time at Slower Pace

16:31

6% of race

Average Pace: 10:20 /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 mi11:44:2527:198:4827:19
8:48
#21494
10K
6.21 mi12:12:2555:198:5428:00
9:01
#21974
15K
9.32 mi12:41:231:24:179:0328:58
9:19
#22457
20K
12.43 mi13:12:091:55:039:1530:46
9:54
#23018
Half
13.11 mi13:18:572:01:519:186:48
9:58
#23107
25K
15.53 mi13:44:302:27:249:2925:33
10:32
#23386
30K
18.64 mi14:20:083:03:029:4935:38
11:28
#23724
20M
20.00 mi14:35:563:18:509:5615:48
11:38
#23854
21M
21.00 mi14:48:103:31:0410:0312:14
12:14
#23862
35K
21.75 mi14:56:463:39:4010:068:36
11:30
#23926
23M
23.00 mi15:11:233:54:1710:1114:37
11:40
#23957
24M
24.00 mi15:22:514:05:4510:1411:28
11:28
#24015
40K
24.85 mi15:32:554:15:4910:1810:04
11:46
#24065
25.2M
25.20 mi15:37:124:20:0610:194:17
12:25
#24066
Finish
26.22 mi15:48:144:31:0810:2111:02
10:50
#24116
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi214948361836123289(Top 82%)9256(Top 76%)9256(Top 169%)
10K6.21 mi3.10 mi21974-4808597-2368597-23622444(Top 79%)8837(Top 72%)8837(Top 162%)
15K9.32 mi3.11 mi22457-4838838-2418838-24123289(Top 82%)9256(Top 76%)9256(Top 169%)
20K12.43 mi3.11 mi23018-5619141-3039141-30324036(Top 85%)9726(Top 80%)9726(Top 178%)
Half13.11 mi0.68 mi23107-899185-449185-4424779(Top 87%)10146(Top 83%)10146(Top 186%)
25K15.53 mi2.42 mi23386-2799353-1689353-16824443(Top 86%)9987(Top 82%)9987(Top 183%)
30K18.64 mi3.11 mi23724-3389588-2359588-23524814(Top 87%)10304(Top 84%)10304(Top 188%)
20M20.00 mi1.36 mi23854-1309672-849672-8424760(Top 87%)10344(Top 85%)10344(Top 189%)
21M21.00 mi1.00 mi23862-89689-179689-1724000(Top 84%)10034(Top 82%)10034(Top 183%)
35K21.75 mi0.75 mi23926-649741-529741-5225101(Top 88%)10635(Top 87%)10635(Top 194%)
23M23.00 mi1.25 mi23957-319780-399780-3924562(Top 86%)10371(Top 85%)10371(Top 190%)
24M24.00 mi1.00 mi24015-589816-369816-3624848(Top 87%)10558(Top 86%)10558(Top 193%)
40K24.85 mi0.85 mi24065-509866-509866-5024605(Top 87%)10477(Top 86%)10477(Top 192%)
25.2M25.20 mi0.35 mi24066-19866986624077(Top 85%)10206(Top 83%)10206(Top 187%)
Finish26.22 mi1.02 mi24116-509896-309896-3025022(Top 88%)10665(Top 87%)10665(Top 195%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

23289

Females

9256

F18-39

9256

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

22444

Females

8837

F18-39

8837

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

23289

Females

9256

F18-39

9256

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

24036

Females

9726

F18-39

9726

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

24779

Females

10146

F18-39

10146

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

24443

Females

9987

F18-39

9987

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24814

Females

10304

F18-39

10304

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

24760

Females

10344

F18-39

10344

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

24000

Females

10034

F18-39

10034

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

25101

Females

10635

F18-39

10635

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

24562

Females

10371

F18-39

10371

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

24848

Females

10558

F18-39

10558

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

24605

Females

10477

F18-39

10477

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24077

Females

10206

F18-39

10206

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

25022

Females

10665

F18-39

10665

Passing Analysis

Category:
Athletes Passed
645
Passed By
3267
Net Change
-2622
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21494
5K → 10K108588-480#21494#21974
10K → 15K75558-483#21974#22457
15K → 20K61622-561#22457#23018
20K → Half998-89#23018#23107
Half → 25K58337-279#23107#23386
25K → 30K69407-338#23386#23724
30K → 20M41171-130#23724#23854
20M → 21M6270-8#23854#23862
21M → 35K2690-64#23862#23926
35K → 23M5182-31#23926#23957
23M → 24M3088-58#23957#24015
24M → 40K2676-50#24015#24065
40K → 25.2M1415-1#24065#24066
25.2M → Finish1565-50#24066#24116
TOTALS6453267-2622
📊

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