Boston Marathon logo
BOSTON MARATHON 2025

Fernanda Sommer Fonseca Nicola Fer

Bib: 11900•F

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 27%
Gender (Female)
#0 / 12228
Top 10%
Division (F18-39)
#0 / 5469
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:30
Rank: #7239
Start → 5K
21:30 | 6:55/mi
10K· 6.21 mi
43:07
Rank: #7437 (-198)
5K → 10K
21:37 | 6:57/mi
15K· 9.32 mi
1:05:06
Rank: #7658 (-221)
10K → 15K
21:59 | 7:05/mi
20K· 12.43 mi
1:27:28
Rank: #7751 (-93)
15K → 20K
22:22 | 7:12/mi
Half· 13.11 mi
1:32:21
Rank: #7792 (-41)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:49:49
Rank: #7729 (+63)
Half → 25K
17:28 | 7:12/mi
30K· 18.64 mi
2:13:30
Rank: #7762 (-33)
25K → 30K
23:41 | 7:37/mi
20M
2:23:53
Rank: #7705 (+57)
30K → 20M
10:23 | 7:38/mi
21M
2:32:00
Rank: #7669 (+36)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:37:34
Rank: #7643 (+26)
21M → 35K
5:34 | 7:26/mi
23M
2:47:20
Rank: #7644 (-1)
35K → 23M
9:46 | 7:48/mi
24M
2:55:00
Rank: #7658 (-14)
23M → 24M
7:40 | 7:40/mi
40K· 24.85 mi
3:01:30
Rank: #7607 (+51)
24M → 40K
6:30 | 7:36/mi
25.2M
3:04:24
Rank: #7605 (+2)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:11:52
Rank: #7573 (+32)
25.2M → Finish
7:28 | 7:20/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:21
Pace7:03 /mi
2nd Half
Distance13.11 mi
Time1:39:31
Pace7:35 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1721:306:5521:30
6:55
-
10K
6.21 mi11:10:5443:076:5621:37
6:57
+0:02
15K
9.32 mi11:32:531:05:066:5921:59
7:05
+0:08
20K
12.43 mi11:55:151:27:287:0222:22
7:12
+0:07
Half
13.11 mi12:00:081:32:217:034:53
7:09
-0:03
25K
15.53 mi12:17:361:49:497:0417:28
7:12
+0:03
30K
18.64 mi12:41:172:13:307:1023:41
7:37
+0:25
20M
20.00 mi12:51:402:23:537:1210:23
7:38
+0:01
21M
21.00 mi12:59:472:32:007:148:07
8:07
+0:29
35K
21.75 mi13:05:212:37:347:155:34
7:26
-0:41
23M
23.00 mi13:15:072:47:207:179:46
7:48
+0:22
24M
24.00 mi13:22:472:55:007:187:40
7:40
-0:08
40K
24.85 mi13:29:173:01:307:186:30
7:36
-0:04
25.2M
25.20 mi13:32:113:04:247:192:54
8:25
+0:49
Finish
26.22 mi13:39:393:11:527:197:28
7:20
-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

6:55 /mi

Average Pace

7:19 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:49

57% of race

Time at Steady Pace

53:36

28% of race

Time at Slower Pace

28:27

15% of race

Average Pace: 7:19 /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 mi10:49:1721:306:5521:30
6:55
#7239
10K
6.21 mi11:10:5443:076:5621:37
6:57
#7437
15K
9.32 mi11:32:531:05:066:5921:59
7:05
#7658
20K
12.43 mi11:55:151:27:287:0222:22
7:12
#7751
Half
13.11 mi12:00:081:32:217:034:53
7:09
#7792
25K
15.53 mi12:17:361:49:497:0417:28
7:12
#7729
30K
18.64 mi12:41:172:13:307:1023:41
7:37
#7762
20M
20.00 mi12:51:402:23:537:1210:23
7:38
#7705
21M
21.00 mi12:59:472:32:007:148:07
8:07
#7669
35K
21.75 mi13:05:212:37:347:155:34
7:26
#7643
23M
23.00 mi13:15:072:47:207:179:46
7:48
#7644
24M
24.00 mi13:22:472:55:007:187:40
7:40
#7658
40K
24.85 mi13:29:173:01:307:186:30
7:36
#7607
25.2M
25.20 mi13:32:113:04:247:192:54
8:25
#7605
Finish
26.22 mi13:39:393:11:527:197:28
7:20
#7573
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi72397487488182(Top 29%)1108(Top 9%)1108(Top 20%)
10K6.21 mi3.10 mi7437-198812-64812-647656(Top 27%)888(Top 7%)888(Top 16%)
15K9.32 mi3.11 mi7658-221892-80892-808182(Top 29%)1108(Top 9%)1108(Top 20%)
20K12.43 mi3.11 mi7751-93930-38930-388220(Top 29%)1195(Top 10%)1195(Top 22%)
Half13.11 mi0.68 mi7792-41951-21951-218769(Top 31%)1381(Top 11%)1381(Top 25%)
25K15.53 mi2.42 mi7729+639519517664(Top 27%)1093(Top 9%)1093(Top 20%)
30K18.64 mi3.11 mi7762-331013-621013-628628(Top 30%)1653(Top 14%)1653(Top 30%)
20M20.00 mi1.36 mi7705+571024-111024-117990(Top 28%)1533(Top 13%)1533(Top 28%)
21M21.00 mi1.00 mi7669+361053-291053-298069(Top 28%)1751(Top 14%)1751(Top 32%)
35K21.75 mi0.75 mi7643+261065-121065-128240(Top 29%)1768(Top 14%)1768(Top 32%)
23M23.00 mi1.25 mi7644-11112-471112-478598(Top 30%)2076(Top 17%)2076(Top 38%)
24M24.00 mi1.00 mi7658-141150-381150-388908(Top 31%)2271(Top 19%)2271(Top 42%)
40K24.85 mi0.85 mi7607+511164-141164-147451(Top 26%)1729(Top 14%)1729(Top 32%)
25.2M25.20 mi0.35 mi7605+21179-151179-158286(Top 29%)2166(Top 18%)2166(Top 40%)
Finish26.22 mi1.02 mi7573+321196-171196-177974(Top 28%)2049(Top 17%)2049(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

8182

Females

1108

F18-39

1108

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7656

Females

888

F18-39

888

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

8182

Females

1108

F18-39

1108

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8220

Females

1195

F18-39

1195

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8769

Females

1381

F18-39

1381

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7664

Females

1093

F18-39

1093

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8628

Females

1653

F18-39

1653

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7990

Females

1533

F18-39

1533

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

8069

Females

1751

F18-39

1751

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

8240

Females

1768

F18-39

1768

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

8598

Females

2076

F18-39

2076

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8908

Females

2271

F18-39

2271

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7451

Females

1729

F18-39

1729

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

8286

Females

2166

F18-39

2166

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7974

Females

2049

F18-39

2049

Passing Analysis

Category:
Athletes Passed
1314
Passed By
1648
Net Change
-334
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7239
5K → 10K124322-198#7239#7437
10K → 15K78299-221#7437#7658
15K → 20K109202-93#7658#7751
20K → Half1455-41#7751#7792
Half → 25K14077+63#7792#7729
25K → 30K181214-33#7729#7762
30K → 20M11760+57#7762#7705
20M → 21M11882+36#7705#7669
21M → 35K6842+26#7669#7643
35K → 23M9394-1#7643#7644
23M → 24M6680-14#7644#7658
24M → 40K9746+51#7658#7607
40K → 25.2M3028+2#7607#7605
25.2M → Finish7947+32#7605#7573
TOTALS13141648-334
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing