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BOSTON MARATHON 2025

Karen Canales Zamorano

Bib: 18380•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 34%
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
7:54/mi
24:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
48:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:13:17
↑ 67↓ 78
20K· 12.43 mi
7:57/mi
1:38:00
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:43:20
↑ 19↓ 370.5%
25K· 15.53 mi
7:58/mi
2:02:38
↑ 66↓ 880.2%
30K· 18.64 mi
8:16/mi
2:28:20
↑ 181↓ 1480.2%
20M
8:25/mi
2:39:46
↑ 64↓ 500.2%
21M
9:00/mi
2:48:46
↑ 106↓ 241.6%
35K· 21.75 mi
8:12/mi
2:54:54
↑ 17↓ 861.7%
23M
8:28/mi
3:05:30
↑ 23↓ 630.6%
24M
8:13/mi
3:13:43
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:20:49
↓ 200.3%
25.2M
9:02/mi
3:23:56
↑ 13↓ 160.2%
Finish· 26.22 mi
8:06/mi
3:32:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:20
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:48:51
Pace8:18 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:4224:337:5424:33
7:54
-
10K
6.21 mi11:49:0448:557:5224:22
7:51
-0:03
15K
9.32 mi12:13:261:13:177:5224:22
7:51
0:00
20K
12.43 mi12:38:091:38:007:5324:43
7:57
+0:06
Half
13.11 mi12:43:291:43:207:535:20
7:49
-0:08
25K
15.53 mi13:02:472:02:387:5419:18
7:58
+0:09
30K
18.64 mi13:28:292:28:207:5725:42
8:16
+0:18
20M
20.00 mi13:39:552:39:467:5911:26
8:25
+0:09
21M
21.00 mi13:48:552:48:468:029:00
9:00
+0:35
35K
21.75 mi13:55:032:54:548:036:08
8:12
-0:48
23M
23.00 mi14:05:393:05:308:0410:36
8:28
+0:16
24M
24.00 mi14:13:523:13:438:048:13
8:13
-0:15
40K
24.85 mi14:20:583:20:498:057:06
8:18
+0:05
25.2M
25.20 mi14:24:053:23:568:063:07
9:02
+0:44
Finish
26.22 mi14:32:203:32:118:068:15
8:06
-0:56

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

7:49 /mi

Average Pace

8:06 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:04

94% of race

Time at Steady Pace

12:07

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:06 /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 mi11:24:4224:337:5424:33
7:54
#15715
10K
6.21 mi11:49:0448:557:5224:22
7:51
#15434
15K
9.32 mi12:13:261:13:177:5224:22
7:51
#15193
20K
12.43 mi12:38:091:38:007:5324:43
7:57
#14962
Half
13.11 mi12:43:291:43:207:535:20
7:49
#14943
25K
15.53 mi13:02:472:02:387:5419:18
7:58
#14672
30K
18.64 mi13:28:292:28:207:5725:42
8:16
#14347
20M
20.00 mi13:39:552:39:467:5911:26
8:25
#14223
21M
21.00 mi13:48:552:48:468:029:00
9:00
#14154
35K
21.75 mi13:55:032:54:548:036:08
8:12
#14121
23M
23.00 mi14:05:393:05:308:0410:36
8:28
#14062
24M
24.00 mi14:13:523:13:438:048:13
8:13
#13991
40K
24.85 mi14:20:583:20:498:057:06
8:18
#13888
25.2M
25.20 mi14:24:053:23:568:063:07
9:02
#13827
Finish
26.22 mi14:32:203:32:118:068:15
8:06
#13800
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi157154967496714756(Top 52%)4448(Top 36%)4448(Top 81%)
10K6.21 mi3.10 mi15434+2814798+1694798+16915208(Top 54%)4666(Top 38%)4666(Top 85%)
15K9.32 mi3.11 mi15193+2414677+1214677+12114756(Top 52%)4448(Top 36%)4448(Top 81%)
20K12.43 mi3.11 mi14962+2314563+1144563+11414585(Top 51%)4418(Top 36%)4418(Top 81%)
Half13.11 mi0.68 mi14943+194559+44559+414458(Top 51%)4323(Top 35%)4323(Top 79%)
25K15.53 mi2.42 mi14672+2714432+1274432+12713601(Top 48%)4001(Top 33%)4001(Top 73%)
30K18.64 mi3.11 mi14347+3254308+1244308+12413325(Top 47%)4016(Top 33%)4016(Top 73%)
20M20.00 mi1.36 mi14223+1244258+504258+5013255(Top 47%)4116(Top 34%)4116(Top 75%)
21M21.00 mi1.00 mi14154+694251+74251+713530(Top 48%)4378(Top 36%)4378(Top 80%)
35K21.75 mi0.75 mi14121+334254-34254-313650(Top 48%)4497(Top 37%)4497(Top 82%)
23M23.00 mi1.25 mi14062+594255-14255-113122(Top 46%)4331(Top 35%)4331(Top 79%)
24M24.00 mi1.00 mi13991+714260-54260-512716(Top 45%)4171(Top 34%)4171(Top 76%)
40K24.85 mi0.85 mi13888+1034236+244236+2412196(Top 43%)4018(Top 33%)4018(Top 73%)
25.2M25.20 mi0.35 mi13827+614212+244212+2412076(Top 43%)4017(Top 33%)4017(Top 73%)
Finish26.22 mi1.02 mi13800+274211+14211+113577(Top 48%)4735(Top 39%)4735(Top 87%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

14756

Females

4448

F18-39

4448

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

15208

Females

4666

F18-39

4666

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

14756

Females

4448

F18-39

4448

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

14585

Females

4418

F18-39

4418

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

14458

Females

4323

F18-39

4323

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

13601

Females

4001

F18-39

4001

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13325

Females

4016

F18-39

4016

30K→20M

18.6 - 20.0 mi

Top 47%
×5story building
+64ft-50ft

Overall

13255

Females

4116

F18-39

4116

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

13530

Females

4378

F18-39

4378

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

13650

Females

4497

F18-39

4497

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13122

Females

4331

F18-39

4331

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12716

Females

4171

F18-39

4171

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12196

Females

4018

F18-39

4018

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12076

Females

4017

F18-39

4017

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

13577

Females

4735

F18-39

4735

Passing Analysis

Category:
Athletes Passed
2837
Passed By
922
Net Change
+1915
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15715
5K → 10K473192+281#15715#15434
10K → 15K32887+241#15434#15193
15K → 20K32291+231#15193#14962
20K → Half4829+19#14962#14943
Half → 25K31342+271#14943#14672
25K → 30K41489+325#14672#14347
30K → 20M16945+124#14347#14223
20M → 21M15283+69#14223#14154
21M → 35K8148+33#14154#14121
35K → 23M13879+59#14121#14062
23M → 24M12150+71#14062#13991
24M → 40K13128+103#13991#13888
40K → 25.2M698+61#13888#13827
25.2M → Finish7851+27#13827#13800
TOTALS2837922+1915
📊

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