Boston Marathon logo
BOSTON MARATHON 2025

Karen Rice

CO

Bib: 21539 F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
8:51/mi
27:29
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:50/mi
54:57
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:51/mi
1:22:27
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:53/mi
1:50:04
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:39/mi
1:55:58
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:02/mi
2:17:53
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:16/mi
2:46:41
↑ 181↓ 1480.2%
138 ft elev
20M
9:17/mi
2:59:18
↑ 64↓ 500.2%
148 ft elev
21M
9:45/mi
3:09:03
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:59/mi
3:15:46
↑ 17↓ 861.7%
156 ft elev
23M
9:16/mi
3:27:22
↑ 23↓ 630.6%
116 ft elev
24M
9:04/mi
3:36:26
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:09/mi
3:44:15
↓ 200.3%
20 ft elev
25.2M
10:41/mi
3:47:56
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:59/mi
3:57:05
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Is this your race?

Claim it for a free AI report

A coach's-eye read of your race — emailed to you, free.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:58
Pace8:51 /mi
2nd Half
Distance13.11 mi
Time2:01:07
Pace9:14 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:3127:298:5127:29
8:51
-
10K
6.21 mi11:51:5954:578:5127:28
8:50
-0:01
15K
9.32 mi12:19:291:22:278:5127:30
8:51
+0:01
20K
12.43 mi12:47:061:50:048:5127:37
8:53
+0:02
Half
13.11 mi12:53:001:55:588:515:54
8:39
-0:14
25K
15.53 mi13:14:552:17:538:5321:55
9:02
+0:23
30K
18.64 mi13:43:432:46:418:5728:48
9:16
+0:14
20M
20.00 mi13:56:202:59:188:5812:37
9:17
+0:01
21M
21.00 mi14:06:053:09:039:009:45
9:45
+0:28
35K
21.75 mi14:12:483:15:469:006:43
8:59
-0:46
23M
23.00 mi14:24:243:27:229:0111:36
9:16
+0:17
24M
24.00 mi14:33:283:36:269:019:04
9:04
-0:12
40K
24.85 mi14:41:173:44:159:017:49
9:09
+0:05
25.2M
25.20 mi14:44:583:47:569:033:41
10:41
+1:32
Finish
26.22 mi14:54:073:57:059:039:09
8:59
-1:42

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

8:39 /mi

Average Pace

9:03 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:54

2% of race

Time at Steady Pace

3:25:08

87% of race

Time at Slower Pace

26:03

11% of race

Average Pace: 9:03 /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 mi11:24:3127:298:5127:29
8:51
#21738
10K
6.21 mi11:51:5954:578:5127:28
8:50
#21682
15K
9.32 mi12:19:291:22:278:5127:30
8:51
#21515
20K
12.43 mi12:47:061:50:048:5127:37
8:53
#21212
Half
13.11 mi12:53:001:55:588:515:54
8:39
#21155
25K
15.53 mi13:14:552:17:538:5321:55
9:02
#20978
30K
18.64 mi13:43:432:46:418:5728:48
9:16
#20581
20M
20.00 mi13:56:202:59:188:5812:37
9:17
#20393
21M
21.00 mi14:06:053:09:039:009:45
9:45
#20216
35K
21.75 mi14:12:483:15:469:006:43
8:59
#20135
23M
23.00 mi14:24:243:27:229:0111:36
9:16
#19998
24M
24.00 mi14:33:283:36:269:019:04
9:04
#19883
40K
24.85 mi14:41:173:44:159:017:49
9:09
#19783
25.2M
25.20 mi14:44:583:47:569:033:41
10:41
#19794
Finish
26.22 mi14:54:073:57:059:039:09
8:59
#19760
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi21738847884782129781618161
10K6.21 mi3.10 mi21682+568432+468432+462160583688368
15K9.32 mi3.11 mi21515+1678311+1218311+1212129781618161
20K12.43 mi3.11 mi21212+3038150+1618150+1612041777197719
Half13.11 mi0.68 mi21155+578111+398111+392009675367536
25K15.53 mi2.42 mi20978+1778023+888023+882008875797579
30K18.64 mi3.11 mi20581+3977858+1657858+1651898571127112
20M20.00 mi1.36 mi20393+1887775+837775+831824568636863
21M21.00 mi1.00 mi20216+1777705+707705+701729264326432
35K21.75 mi0.75 mi20135+817667+387667+381816570017001
23M23.00 mi1.25 mi19998+1377615+527615+521764768196819
24M24.00 mi1.00 mi19883+1157586+297586+291773769036903
40K24.85 mi0.85 mi19783+1007546+407546+401712666576657
25.2M25.20 mi0.35 mi19794-117556-107556-101969080018001
Finish26.22 mi1.02 mi19760+347548+87548+81894875697569

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21297

Females

8161

F45-49

8161

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21605

Females

8368

F45-49

8368

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21297

Females

8161

F45-49

8161

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

20417

Females

7719

F45-49

7719

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20096

Females

7536

F45-49

7536

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20088

Females

7579

F45-49

7579

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

18985

Females

7112

F45-49

7112

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18245

Females

6863

F45-49

6863

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17292

Females

6432

F45-49

6432

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

18165

Females

7001

F45-49

7001

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

17647

Females

6819

F45-49

6819

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17737

Females

6903

F45-49

6903

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17126

Females

6657

F45-49

6657

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19690

Females

8001

F45-49

8001

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

18948

Females

7569

F45-49

7569

Passing Analysis

Category:
Athletes Passed
2677
Passed By
699
Net Change
+1978
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21738
5K → 10K291235+56#21738#21682
10K → 15K299132+167#21682#21515
15K → 20K36259+303#21515#21212
20K → Half7013+57#21212#21155
Half → 25K21740+177#21155#20978
25K → 30K45255+397#20978#20581
30K → 20M20416+188#20581#20393
20M → 21M19619+177#20393#20216
21M → 35K9413+81#20216#20135
35K → 23M15720+137#20135#19998
23M → 24M13116+115#19998#19883
24M → 40K1099+100#19883#19783
40K → 25.2M1930-11#19783#19794
25.2M → Finish7642+34#19794#19760
TOTALS2677699+1978

Passing Charts

Category:
Loading...

Passing Circle

Loading...

Position Flow

Loading...

Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing