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BOSTON MARATHON 2025

Valeria Cobos

Bib: 15808•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

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
7:46/mi
24:09
↑ 97↓ 3451.5%
10K· 6.21 mi
8:00/mi
49:00
↑ 79↓ 1380.4%
15K· 9.32 mi
8:09/mi
1:14:18
↑ 67↓ 78
20K· 12.43 mi
8:41/mi
1:41:17
↑ 106↓ 860.1%
Half· 13.11 mi
8:40/mi
1:47:12
↑ 19↓ 370.5%
25K· 15.53 mi
9:09/mi
2:09:23
↑ 66↓ 880.2%
30K· 18.64 mi
10:19/mi
2:41:25
↑ 181↓ 1480.2%
20M
10:16/mi
2:55:22
↑ 64↓ 500.2%
21M
11:27/mi
3:06:49
↑ 106↓ 241.6%
35K· 21.75 mi
9:27/mi
3:13:53
↑ 17↓ 861.7%
23M
10:25/mi
3:26:56
↑ 23↓ 630.6%
24M
10:08/mi
3:37:04
↓ 821.3%
40K· 24.85 mi
10:12/mi
3:45:47
↓ 200.3%
25.2M
10:52/mi
3:49:32
↑ 13↓ 160.2%
Finish· 26.22 mi
9:34/mi
3:59:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:12
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time2:12:05
Pace10:05 /mi
📊Positive Split: 23.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:5224:097:4624:09
7:46
-
10K
6.21 mi11:22:4349:007:5324:51
8:00
+0:14
15K
9.32 mi11:48:011:14:187:5825:18
8:09
+0:09
20K
12.43 mi12:15:001:41:178:0926:59
8:41
+0:32
Half
13.11 mi12:20:551:47:128:115:55
8:40
-0:01
25K
15.53 mi12:43:062:09:238:2022:11
9:09
+0:29
30K
18.64 mi13:15:082:41:258:4032:02
10:19
+1:10
20M
20.00 mi13:29:052:55:228:4613:57
10:16
-0:03
21M
21.00 mi13:40:323:06:498:5411:27
11:27
+1:11
35K
21.75 mi13:47:363:13:538:557:04
9:27
-2:00
23M
23.00 mi14:00:393:26:569:0013:03
10:25
+0:58
24M
24.00 mi14:10:473:37:049:0310:08
10:08
-0:17
40K
24.85 mi14:19:303:45:479:058:43
10:12
+0:04
25.2M
25.20 mi14:23:153:49:329:073:45
10:52
+0:40
Finish
26.22 mi14:33:003:59:179:089:45
9:34
-1:18

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

7:46 /mi

Average Pace

9:08 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:12

45% of race

Time at Steady Pace

39:00

16% of race

Time at Slower Pace

1:33:05

39% of race

Average Pace: 9:08 /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 mi10:57:5224:097:4624:09
7:46
#14598
10K
6.21 mi11:22:4349:007:5324:51
8:00
#15551
15K
9.32 mi11:48:011:14:187:5825:18
8:09
#16100
20K
12.43 mi12:15:001:41:178:0926:59
8:41
#17040
Half
13.11 mi12:20:551:47:128:115:55
8:40
#17181
25K
15.53 mi12:43:062:09:238:2022:11
9:09
#17775
30K
18.64 mi13:15:082:41:258:4032:02
10:19
#19101
20M
20.00 mi13:29:052:55:228:4613:57
10:16
#19393
21M
21.00 mi13:40:323:06:498:5411:27
11:27
#19691
35K
21.75 mi13:47:363:13:538:557:04
9:27
#19709
23M
23.00 mi14:00:393:26:569:0013:03
10:25
#19901
24M
24.00 mi14:10:473:37:049:0310:08
10:08
#20021
40K
24.85 mi14:19:303:45:479:058:43
10:12
#20095
25.2M
25.20 mi14:23:153:49:329:073:45
10:52
#20115
Finish
26.22 mi14:33:003:59:179:089:45
9:34
#20219
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi145984282428217056(Top 60%)5768(Top 47%)5768(Top 105%)
10K6.21 mi3.10 mi15551-9534873-5914873-59116493(Top 58%)5423(Top 44%)5423(Top 99%)
15K9.32 mi3.11 mi16100-5495199-3265199-32617056(Top 60%)5768(Top 47%)5768(Top 105%)
20K12.43 mi3.11 mi17040-9405767-5685767-56819353(Top 68%)7111(Top 58%)7111(Top 130%)
Half13.11 mi0.68 mi17181-1415852-855852-8520255(Top 71%)7628(Top 62%)7628(Top 139%)
25K15.53 mi2.42 mi17775-5946220-3686220-36820566(Top 72%)7852(Top 64%)7852(Top 144%)
30K18.64 mi3.11 mi19101-13267018-7987018-79822484(Top 79%)9035(Top 74%)9035(Top 165%)
20M20.00 mi1.36 mi19393-2927206-1887206-18821762(Top 77%)8766(Top 72%)8766(Top 160%)
21M21.00 mi1.00 mi19691-2987397-1917397-19122531(Top 79%)9257(Top 76%)9257(Top 169%)
35K21.75 mi0.75 mi19709-187421-247421-2420159(Top 71%)8062(Top 66%)8062(Top 147%)
23M23.00 mi1.25 mi19901-1927565-1447565-14421810(Top 77%)8967(Top 73%)8967(Top 164%)
24M24.00 mi1.00 mi20021-1207652-877652-8721748(Top 77%)8997(Top 74%)8997(Top 165%)
40K24.85 mi0.85 mi20095-747713-617713-6121070(Top 74%)8698(Top 71%)8698(Top 159%)
25.2M25.20 mi0.35 mi20115-207735-227735-2220284(Top 71%)8304(Top 68%)8304(Top 152%)
Finish26.22 mi1.02 mi20219-1047792-577792-5721443(Top 75%)8881(Top 73%)8881(Top 162%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

17056

Females

5768

F18-39

5768

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16493

Females

5423

F18-39

5423

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

17056

Females

5768

F18-39

5768

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

19353

Females

7111

F18-39

7111

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20255

Females

7628

F18-39

7628

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

20566

Females

7852

F18-39

7852

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

22484

Females

9035

F18-39

9035

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

21762

Females

8766

F18-39

8766

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22531

Females

9257

F18-39

9257

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20159

Females

8062

F18-39

8062

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21810

Females

8967

F18-39

8967

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21748

Females

8997

F18-39

8997

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21070

Females

8698

F18-39

8698

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20284

Females

8304

F18-39

8304

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21443

Females

8881

F18-39

8881

Passing Analysis

Category:
Athletes Passed
560
Passed By
6181
Net Change
-5621
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14598
5K → 10K641017-953#14598#15551
10K → 15K77626-549#15551#16100
15K → 20K36976-940#16100#17040
20K → Half8149-141#17040#17181
Half → 25K58652-594#17181#17775
25K → 30K371363-1326#17775#19101
30K → 20M40332-292#19101#19393
20M → 21M37335-298#19393#19691
21M → 35K3351-18#19691#19709
35K → 23M45237-192#19709#19901
23M → 24M35155-120#19901#20021
24M → 40K37111-74#20021#20095
40K → 25.2M2545-20#20095#20115
25.2M → Finish28132-104#20115#20219
TOTALS5606181-5621
📊

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