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BOSTON MARATHON 2025

Karen Cathell

Bib: 16806•F

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
Masters (Masters Women)
#0 / 6759
Top 27%
Division (F40-44)
#0 / 1718
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
8:03/mi
25:00
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
49:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:14:43
↑ 67↓ 78
20K· 12.43 mi
8:08/mi
1:39:59
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:45:28
↑ 19↓ 370.5%
25K· 15.53 mi
8:10/mi
2:05:16
↑ 66↓ 880.2%
30K· 18.64 mi
8:39/mi
2:32:08
↑ 181↓ 1480.2%
20M
8:40/mi
2:43:54
↑ 64↓ 500.2%
21M
9:13/mi
2:53:07
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
2:59:22
↑ 17↓ 861.7%
23M
8:30/mi
3:10:00
↑ 23↓ 630.6%
24M
8:23/mi
3:18:23
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:25:29
↓ 200.3%
25.2M
9:23/mi
3:28:43
↑ 13↓ 160.2%
Finish· 26.22 mi
8:18/mi
3:37:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:28
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:51:42
Pace8:31 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:3225:008:0325:00
8:03
-
10K
6.21 mi11:23:2449:528:0224:52
8:00
-0:03
15K
9.32 mi11:48:151:14:438:0124:51
8:00
0:00
20K
12.43 mi12:13:311:39:598:0325:16
8:08
+0:08
Half
13.11 mi12:19:001:45:288:035:29
8:02
-0:06
25K
15.53 mi12:38:482:05:168:0419:48
8:10
+0:08
30K
18.64 mi13:05:402:32:088:1026:52
8:39
+0:29
20M
20.00 mi13:17:262:43:548:1211:46
8:40
+0:01
21M
21.00 mi13:26:392:53:078:159:13
9:13
+0:33
35K
21.75 mi13:32:542:59:228:156:15
8:21
-0:52
23M
23.00 mi13:43:323:10:008:1610:38
8:30
+0:09
24M
24.00 mi13:51:553:18:238:168:23
8:23
-0:07
40K
24.85 mi13:59:013:25:298:167:06
8:18
-0:05
25.2M
25.20 mi14:02:153:28:438:173:14
9:23
+1:05
Finish
26.22 mi14:10:423:37:108:178:27
8:18
-1:05

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

8:00 /mi

Average Pace

8:17 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:43

94% of race

Time at Steady Pace

12:27

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:17 /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 mi10:58:3225:008:0325:00
8:03
#16974
10K
6.21 mi11:23:2449:528:0224:52
8:00
#16722
15K
9.32 mi11:48:151:14:438:0124:51
8:00
#16463
20K
12.43 mi12:13:311:39:598:0325:16
8:08
#16286
Half
13.11 mi12:19:001:45:288:035:29
8:02
#16263
25K
15.53 mi12:38:482:05:168:0419:48
8:10
#16055
30K
18.64 mi13:05:402:32:088:1026:52
8:39
#15951
20M
20.00 mi13:17:262:43:548:1211:46
8:40
#15828
21M
21.00 mi13:26:392:53:078:159:13
9:13
#15716
35K
21.75 mi13:32:542:59:228:156:15
8:21
#15638
23M
23.00 mi13:43:323:10:008:1610:38
8:30
#15461
24M
24.00 mi13:51:553:18:238:168:23
8:23
#15360
40K
24.85 mi13:59:013:25:298:167:06
8:18
#15223
25.2M
25.20 mi14:02:153:28:438:173:14
9:23
#15200
Finish
26.22 mi14:10:423:37:108:178:27
8:18
#15182
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi169745723572316053(Top 57%)5170(Top 42%)5170(Top 301%)
10K6.21 mi3.10 mi16722+2525569+1545569+15416525(Top 58%)5435(Top 44%)5435(Top 316%)
15K9.32 mi3.11 mi16463+2595415+1545415+15416053(Top 57%)5170(Top 42%)5170(Top 301%)
20K12.43 mi3.11 mi16286+1775318+975318+9715880(Top 56%)5145(Top 42%)5145(Top 299%)
Half13.11 mi0.68 mi16263+235312+65312+616222(Top 57%)5309(Top 43%)5309(Top 309%)
25K15.53 mi2.42 mi16055+2085192+1205192+12015103(Top 53%)4792(Top 39%)4792(Top 279%)
30K18.64 mi3.11 mi15951+1045193-15193-115689(Top 55%)5275(Top 43%)5275(Top 307%)
20M20.00 mi1.36 mi15828+1235166+275166+2714822(Top 52%)4950(Top 40%)4950(Top 288%)
21M21.00 mi1.00 mi15716+1125144+225144+2214733(Top 52%)5020(Top 41%)5020(Top 292%)
35K21.75 mi0.75 mi15638+785114+305114+3014633(Top 52%)5036(Top 41%)5036(Top 293%)
23M23.00 mi1.25 mi15461+1775050+645050+6413294(Top 47%)4432(Top 36%)4432(Top 258%)
24M24.00 mi1.00 mi15360+1015017+335017+3313792(Top 49%)4715(Top 39%)4715(Top 274%)
40K24.85 mi0.85 mi15223+1374973+444973+4412216(Top 43%)4038(Top 33%)4038(Top 235%)
25.2M25.20 mi0.35 mi15200+234969+44969+413944(Top 49%)4987(Top 41%)4987(Top 290%)
Finish26.22 mi1.02 mi15182+184978-94978-914885(Top 52%)5413(Top 44%)5413(Top 315%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16053

Females

5170

F40-44

5170

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16525

Females

5435

F40-44

5435

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16053

Females

5170

F40-44

5170

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15880

Females

5145

F40-44

5145

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16222

Females

5309

F40-44

5309

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

15103

Females

4792

F40-44

4792

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15689

Females

5275

F40-44

5275

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

14822

Females

4950

F40-44

4950

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14733

Females

5020

F40-44

5020

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14633

Females

5036

F40-44

5036

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

13294

Females

4432

F40-44

4432

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13792

Females

4715

F40-44

4715

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12216

Females

4038

F40-44

4038

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13944

Females

4987

F40-44

4987

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

14885

Females

5413

F40-44

5413

Passing Analysis

Category:
Athletes Passed
2700
Passed By
908
Net Change
+1792
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16974
5K → 10K435183+252#16974#16722
10K → 15K34586+259#16722#16463
15K → 20K298121+177#16463#16286
20K → Half4421+23#16286#16263
Half → 25K26658+208#16263#16055
25K → 30K275171+104#16055#15951
30K → 20M17451+123#15951#15828
20M → 21M17563+112#15828#15716
21M → 35K9618+78#15716#15638
35K → 23M20124+177#15638#15461
23M → 24M12322+101#15461#15360
24M → 40K14912+137#15360#15223
40K → 25.2M4017+23#15223#15200
25.2M → Finish7961+18#15200#15182
TOTALS2700908+1792
📊

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