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BOSTON MARATHON 2025

Julia Primo

Bib: 17529•F

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0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 46%
Age Group (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
24:57
Rank: #16844
Start → 5K
24:57 | 8:02/mi
10K· 6.21 mi
49:51
Rank: #16703 (+141)
5K → 10K
24:54 | 8:01/mi
15K· 9.32 mi
1:14:56
Rank: #16641 (+62)
10K → 15K
25:05 | 8:04/mi
20K· 12.43 mi
1:40:27
Rank: #16558 (+83)
15K → 20K
25:31 | 8:13/mi
Half· 13.11 mi
1:46:00
Rank: #16574 (-16)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:05:59
Rank: #16384 (+190)
Half → 25K
19:59 | 8:15/mi
30K· 18.64 mi
2:33:00
Rank: #16268 (+116)
25K → 30K
27:01 | 8:42/mi
20M
2:45:13
Rank: #16264 (+4)
30K → 20M
12:13 | 8:59/mi
21M
2:54:51
Rank: #16228 (+36)
20M → 21M
9:38 | 9:38/mi
35K· 21.75 mi
3:01:30
Rank: #16267 (-39)
21M → 35K
6:39 | 8:53/mi
23M
3:12:53
Rank: #16243 (+24)
35K → 23M
11:23 | 9:05/mi
24M
3:21:56
Rank: #16292 (-49)
23M → 24M
9:03 | 9:03/mi
40K· 24.85 mi
3:29:28
Rank: #16258 (+34)
24M → 40K
7:32 | 8:49/mi
25.2M
3:32:52
Rank: #16267 (-9)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:41:34
Rank: #16263 (+4)
25.2M → Finish
8:42 | 8:32/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:46:00
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:55:34
Pace8:49 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1324:578:0224:57
8:02
-
10K
6.21 mi11:40:0749:518:0124:54
8:01
-0:01
15K
9.32 mi12:05:121:14:568:0225:05
8:04
+0:03
20K
12.43 mi12:30:431:40:278:0525:31
8:13
+0:09
Half
13.11 mi12:36:161:46:008:055:33
8:08
-0:05
25K
15.53 mi12:56:152:05:598:0719:59
8:15
+0:07
30K
18.64 mi13:23:162:33:008:1227:01
8:42
+0:27
20M
20.00 mi13:35:292:45:138:1612:13
8:59
+0:17
21M
21.00 mi13:45:072:54:518:209:38
9:38
+0:39
35K
21.75 mi13:51:463:01:308:216:39
8:53
-0:45
23M
23.00 mi14:03:093:12:538:2311:23
9:05
+0:12
24M
24.00 mi14:12:123:21:568:259:03
9:03
-0:02
40K
24.85 mi14:19:443:29:288:267:32
8:49
-0:14
25.2M
25.20 mi14:23:083:32:528:273:24
9:52
+1:03
Finish
26.22 mi14:31:503:41:348:278:42
8:32
-1:20

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:01 /mi

Average Pace

8:27 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:05:59

57% of race

Time at Steady Pace

49:54

23% of race

Time at Slower Pace

45:41

21% of race

Average Pace: 8:27 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:15:1324:578:0224:57
8:02
#16844
10K
6.21 mi11:40:0749:518:0124:54
8:01
#16703
15K
9.32 mi12:05:121:14:568:0225:05
8:04
#16641
20K
12.43 mi12:30:431:40:278:0525:31
8:13
#16558
Half
13.11 mi12:36:161:46:008:055:33
8:08
#16574
25K
15.53 mi12:56:152:05:598:0719:59
8:15
#16384
30K
18.64 mi13:23:162:33:008:1227:01
8:42
#16268
20M
20.00 mi13:35:292:45:138:1612:13
8:59
#16264
21M
21.00 mi13:45:072:54:518:209:38
9:38
#16228
35K
21.75 mi13:51:463:01:308:216:39
8:53
#16267
23M
23.00 mi14:03:093:12:538:2311:23
9:05
#16243
24M
24.00 mi14:12:123:21:568:259:03
9:03
#16292
40K
24.85 mi14:19:443:29:288:267:32
8:49
#16258
25.2M
25.20 mi14:23:083:32:528:273:24
9:52
#16267
Finish
26.22 mi14:31:503:41:348:278:42
8:32
#16263
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi168445653565316586(Top 58%)5489(Top 45%)5489(Top 100%)
10K6.21 mi3.10 mi16703+1415555+985555+9816609(Top 58%)5489(Top 45%)5489(Top 100%)
15K9.32 mi3.11 mi16641+625509+465509+4616586(Top 58%)5489(Top 45%)5489(Top 100%)
20K12.43 mi3.11 mi16558+835473+365473+3616396(Top 58%)5438(Top 44%)5438(Top 99%)
Half13.11 mi0.68 mi16574-165486-135486-1316904(Top 60%)5707(Top 47%)5707(Top 104%)
25K15.53 mi2.42 mi16384+1905395+915395+9115587(Top 55%)5071(Top 41%)5071(Top 93%)
30K18.64 mi3.11 mi16268+1165391+45391+415989(Top 56%)5455(Top 45%)5455(Top 100%)
20M20.00 mi1.36 mi16264+45412-215412-2116747(Top 59%)6000(Top 49%)6000(Top 110%)
21M21.00 mi1.00 mi16228+365424-125424-1216712(Top 59%)6094(Top 50%)6094(Top 111%)
35K21.75 mi0.75 mi16267-395475-515475-5117713(Top 62%)6737(Top 55%)6737(Top 123%)
23M23.00 mi1.25 mi16243+245488-135488-1316782(Top 59%)6321(Top 52%)6321(Top 116%)
24M24.00 mi1.00 mi16292-495543-555543-5517621(Top 62%)6826(Top 56%)6826(Top 125%)
40K24.85 mi0.85 mi16258+345549-65549-615274(Top 54%)5676(Top 46%)5676(Top 104%)
25.2M25.20 mi0.35 mi16267-95563-145563-1416425(Top 58%)6286(Top 51%)6286(Top 115%)
Finish26.22 mi1.02 mi16263+45579-165579-1616477(Top 58%)6287(Top 51%)6287(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21stories
+97ft-345ft

Overall

16586

Females

5489

F18-39

5489

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

16609

Females

5489

F18-39

5489

10K→15K

6.2 - 9.3 mi

Top 58%
×3stories
+67ft-78ft

Overall

16586

Females

5489

F18-39

5489

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16396

Females

5438

F18-39

5438

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

16904

Females

5707

F18-39

5707

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

15587

Females

5071

F18-39

5071

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15989

Females

5455

F18-39

5455

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16747

Females

6000

F18-39

6000

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16712

Females

6094

F18-39

6094

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

17713

Females

6737

F18-39

6737

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

16782

Females

6321

F18-39

6321

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

17621

Females

6826

F18-39

6826

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15274

Females

5676

F18-39

5676

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16425

Females

6286

F18-39

6286

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

16477

Females

6287

F18-39

6287

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2061
Passed By
1480
Net Change
+581
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16844
5K → 10K372231+141#16844#16703
10K → 15K237175+62#16703#16641
15K → 20K241158+83#16641#16558
20K → Half2844-16#16558#16574
Half → 25K24757+190#16574#16384
25K → 30K286170+116#16384#16268
30K → 20M10197+4#16268#16264
20M → 21M12488+36#16264#16228
21M → 35K5594-39#16228#16267
35K → 23M12399+24#16267#16243
23M → 24M62111-49#16243#16292
24M → 40K8248+34#16292#16258
40K → 25.2M2736-9#16258#16267
25.2M → Finish7672+4#16267#16263
TOTALS20611480+581
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing