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BOSTON MARATHON 2025

Katherine Tracy

MA

Bib: 31815 F

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
10:36/mi
32:56
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
10:28/mi
1:05:26
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
10:22/mi
1:37:39
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
12:06/mi
2:15:16
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
11:04/mi
2:22:49
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
12:10/mi
2:52:18
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
14:43/mi
3:38:01
↑ 181↓ 1480.2%
138 ft elev
20M
14:25/mi
3:57:37
↑ 64↓ 500.2%
148 ft elev
21M
15:27/mi
4:13:04
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
12:51/mi
4:22:41
↑ 17↓ 861.7%
156 ft elev
23M
14:35/mi
4:40:57
↑ 23↓ 630.6%
116 ft elev
24M
13:57/mi
4:54:54
↓ 821.3%
34 ft elev
40K· 24.85 mi
14:30/mi
5:07:18
↓ 200.3%
20 ft elev
25.2M
14:53/mi
5:12:26
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
12:53/mi
5:25:34
↑ 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
2:22:4910:54 /mi⚡ faster
2nd Half
3:02:4513:56 /mi+28.0%
Positive split — 28.0% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:3532:5610:3632:56
10:36
-
10K
6.21 mi12:28:051:05:2610:3232:30
10:28
-0:08
15K
9.32 mi13:00:181:37:3910:2932:13
10:22
-0:06
20K
12.43 mi13:37:552:15:1610:5337:37
12:06
+1:44
Half
13.11 mi13:45:282:22:4910:547:33
11:04
-1:02
25K
15.53 mi14:14:572:52:1811:0529:29
12:10
+1:06
30K
18.64 mi15:00:403:38:0111:4245:43
14:43
+2:33
20M
20.00 mi15:20:163:57:3711:5319:36
14:25
-0:18
21M
21.00 mi15:35:434:13:0412:0315:27
15:27
+1:02
35K
21.75 mi15:45:204:22:4112:059:37
12:51
-2:36
23M
23.00 mi16:03:364:40:5712:1318:16
14:35
+1:44
24M
24.00 mi16:17:334:54:5412:1713:57
13:57
-0:38
40K
24.85 mi16:29:575:07:1812:2212:24
14:30
+0:33
25.2M
25.20 mi16:35:055:12:2612:245:08
14:53
+0:23
Finish
26.22 mi16:48:135:25:3412:2613:08
12:53
-2:00

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

10:22 /mi

Average Pace

12:26 /mi

Slowest Pace

15:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:12

32% of race

Time at Steady Pace

1:29:51

28% of race

Time at Slower Pace

2:10:31

40% of race

Average Pace: 12:25 /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 mi11:55:3532:5610:3632:56
10:36
#26957
10K
6.21 mi12:28:051:05:2610:3232:30
10:28
#26548
15K
9.32 mi13:00:181:37:3910:2932:13
10:22
#26237
20K
12.43 mi13:37:552:15:1610:5337:37
12:06
#26612
Half
13.11 mi13:45:282:22:4910:547:33
11:04
#26612
25K
15.53 mi14:14:572:52:1811:0529:29
12:10
#26627
30K
18.64 mi15:00:403:38:0111:4245:43
14:43
#27012
20M
20.00 mi15:20:163:57:3711:5319:36
14:25
#27062
21M
21.00 mi15:35:434:13:0412:0315:27
15:27
#27110
35K
21.75 mi15:45:204:22:4112:059:37
12:51
#27108
23M
23.00 mi16:03:364:40:5712:1318:16
14:35
#27166
24M
24.00 mi16:17:334:54:5412:1713:57
13:57
#27204
40K
24.85 mi16:29:575:07:1812:2212:24
14:30
#27236
25.2M
25.20 mi16:35:055:12:2612:245:08
14:53
#27247
Finish
26.22 mi16:48:135:25:3412:2613:08
12:53
#27273
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi269571130011300257091062710627
10K6.21 mi3.10 mi26548+40911078+22211078+222261931090110901
15K9.32 mi3.11 mi26237+31110911+16710911+167257091062710627
20K12.43 mi3.11 mi26612-37511131-22011131-220272101152511525
Half13.11 mi0.68 mi2661211132-111132-1265811117211172
25K15.53 mi2.42 mi26627-1511158-2611158-26265931118811188
30K18.64 mi3.11 mi27012-38511400-24211400-242279021199911999
20M20.00 mi1.36 mi27062-5011439-3911439-39275931186611866
21M21.00 mi1.00 mi27110-4811480-4111480-41274861180911809
35K21.75 mi0.75 mi27108+211482-211482-2268251150511505
23M23.00 mi1.25 mi27166-5811525-4311525-43276931195211952
24M24.00 mi1.00 mi27204-3811558-3311558-33276101194411944
40K24.85 mi0.85 mi27236-3211578-2011578-20275131187611876
25.2M25.20 mi0.35 mi27247-1111587-911587-9270321168111681
Finish26.22 mi1.02 mi27273-2611608-2111608-21275491189211892

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

25709

Females

10627

F18-39

10627

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

26193

Females

10901

F18-39

10901

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

25709

Females

10627

F18-39

10627

15K→20K

9.3 - 12.4 mi

Top 96%
×5story building
+106ft-86ft

Overall

27210

Females

11525

F18-39

11525

20K→Half

12.4 - 13.1 mi

Top 94%
×2story building
+19ft-37ft

Overall

26581

Females

11172

F18-39

11172

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

26593

Females

11188

F18-39

11188

25K→30K

15.5 - 18.6 mi

Top 98%
×9story building
+181ft-148ft

Overall

27902

Females

11999

F18-39

11999

30K→20M

18.6 - 20.0 mi

Top 97%
×5story building
+64ft-50ft

Overall

27593

Females

11866

F18-39

11866

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

27486

Females

11809

F18-39

11809

21M→35K

21.0 - 21.8 mi

Top 94%
×7story building
+17ft-86ft

Overall

26825

Females

11505

F18-39

11505

35K→23M

21.8 - 23.0 mi

Top 97%
×5story building
+23ft-63ft

Overall

27693

Females

11952

F18-39

11952

23M→24M

23.0 - 24.0 mi

Top 97%
×6story building
+12ft-82ft

Overall

27610

Females

11944

F18-39

11944

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27513

Females

11876

F18-39

11876

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

27032

Females

11681

F18-39

11681

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

27549

Females

11892

F18-39

11892

Passing Analysis

Category:
Athletes Passed
998
Passed By
1314
Net Change
-316
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26957
5K → 10K44435+409#26957#26548
10K → 15K32514+311#26548#26237
15K → 20K34409-375#26237#26612
20K → Half17170#26612#26612
Half → 25K7287-15#26612#26627
25K → 30K14399-385#26627#27012
30K → 20M2272-50#27012#27062
20M → 21M1260-48#27062#27110
21M → 35K1816+2#27110#27108
35K → 23M866-58#27108#27166
23M → 24M1250-38#27166#27204
24M → 40K840-32#27204#27236
40K → 25.2M314-11#27236#27247
25.2M → Finish935-26#27247#27273
TOTALS9981314-316

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