Boston Marathon logo
BOSTON MARATHON 2025

Emily Collins

Bib: 23448•F

OR

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:40
Rank: #23325
Start → 5K
28:40 | 9:14/mi
10K· 6.21 mi
57:58
Rank: #23653 (-328)
5K → 10K
29:18 | 9:26/mi
15K· 9.32 mi
1:27:13
Rank: #23622 (+31)
10K → 15K
29:15 | 9:25/mi
20K· 12.43 mi
1:56:55
Rank: #23495 (+127)
15K → 20K
29:42 | 9:34/mi
Half· 13.11 mi
2:03:08
Rank: #23420 (+75)
20K → Half
6:13 | 9:07/mi
25K· 15.53 mi
2:25:51
Rank: #23090 (+330)
Half → 25K
22:43 | 9:22/mi
30K· 18.64 mi
2:55:37
Rank: #22561 (+529)
25K → 30K
29:46 | 9:35/mi
20M
3:09:01
Rank: #22407 (+154)
30K → 20M
13:24 | 9:52/mi
21M
3:19:40
Rank: #22282 (+125)
20M → 21M
10:39 | 10:39/mi
35K· 21.75 mi
3:27:07
Rank: #22255 (+27)
21M → 35K
7:27 | 9:57/mi
23M
3:40:39
Rank: #22265 (-10)
35K → 23M
13:32 | 10:49/mi
24M
3:51:23
Rank: #22311 (-46)
23M → 24M
10:44 | 10:44/mi
40K· 24.85 mi
4:00:43
Rank: #22333 (-22)
24M → 40K
9:20 | 10:55/mi
25.2M
4:05:02
Rank: #22364 (-31)
40K → 25.2M
4:19 | 12:31/mi
Finish· 26.22 mi
4:15:40
Rank: #22434 (-70)
25.2M → Finish
10:38 | 10:26/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
Time2:03:08
Pace9:24 /mi
2nd Half
Distance13.11 mi
Time2:12:32
Pace10:07 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:1528:409:1428:40
9:14
-
10K
6.21 mi11:54:3357:589:2029:18
9:26
+0:12
15K
9.32 mi12:23:481:27:139:2129:15
9:25
-0:01
20K
12.43 mi12:53:301:56:559:2429:42
9:34
+0:09
Half
13.11 mi12:59:432:03:089:246:13
9:07
-0:27
25K
15.53 mi13:22:262:25:519:2322:43
9:22
+0:15
30K
18.64 mi13:52:122:55:379:2529:46
9:35
+0:13
20M
20.00 mi14:05:363:09:019:2713:24
9:52
+0:17
21M
21.00 mi14:16:153:19:409:3010:39
10:39
+0:47
35K
21.75 mi14:23:423:27:079:317:27
9:57
-0:42
23M
23.00 mi14:37:143:40:399:3613:32
10:49
+0:52
24M
24.00 mi14:47:583:51:239:3810:44
10:44
-0:05
40K
24.85 mi14:57:184:00:439:419:20
10:55
+0:11
25.2M
25.20 mi15:01:374:05:029:434:19
12:31
+1:36
Finish
26.22 mi15:12:154:15:409:4510:38
10:26
-2:05

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

9:07 /mi

Average Pace

9:45 /mi

Slowest Pace

12:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:51

34% of race

Time at Steady Pace

1:49:37

43% of race

Time at Slower Pace

59:12

23% of race

Average Pace: 9:45 /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 mi11:25:1528:409:1428:40
9:14
#23325
10K
6.21 mi11:54:3357:589:2029:18
9:26
#23653
15K
9.32 mi12:23:481:27:139:2129:15
9:25
#23622
20K
12.43 mi12:53:301:56:559:2429:42
9:34
#23495
Half
13.11 mi12:59:432:03:089:246:13
9:07
#23420
25K
15.53 mi13:22:262:25:519:2322:43
9:22
#23090
30K
18.64 mi13:52:122:55:379:2529:46
9:35
#22561
20M
20.00 mi14:05:363:09:019:2713:24
9:52
#22407
21M
21.00 mi14:16:153:19:409:3010:39
10:39
#22282
35K
21.75 mi14:23:423:27:079:317:27
9:57
#22255
23M
23.00 mi14:37:143:40:399:3613:32
10:49
#22265
24M
24.00 mi14:47:583:51:239:3810:44
10:44
#22311
40K
24.85 mi14:57:184:00:439:419:20
10:55
#22333
25.2M
25.20 mi15:01:374:05:029:434:19
12:31
#22364
Finish
26.22 mi15:12:154:15:409:4510:38
10:26
#22434
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi233259342934223520(Top 83%)9388(Top 77%)9388(Top 720%)
10K6.21 mi3.10 mi23653-3289512-1709512-17023928(Top 84%)9641(Top 79%)9641(Top 740%)
15K9.32 mi3.11 mi23622+319468+449468+4423520(Top 83%)9388(Top 77%)9388(Top 720%)
20K12.43 mi3.11 mi23495+1279402+669402+6623094(Top 81%)9202(Top 75%)9202(Top 706%)
Half13.11 mi0.68 mi23420+759352+509352+5022303(Top 79%)8785(Top 72%)8785(Top 674%)
25K15.53 mi2.42 mi23090+3309188+1649188+16421441(Top 75%)8332(Top 68%)8332(Top 639%)
30K18.64 mi3.11 mi22561+5298945+2438945+24320283(Top 71%)7819(Top 64%)7819(Top 600%)
20M20.00 mi1.36 mi22407+1548876+698876+6920513(Top 72%)8090(Top 66%)8090(Top 621%)
21M21.00 mi1.00 mi22282+1258824+528824+5220473(Top 72%)8173(Top 67%)8173(Top 627%)
35K21.75 mi0.75 mi22255+278823+18823+121805(Top 77%)8939(Top 73%)8939(Top 686%)
23M23.00 mi1.25 mi22265-108865-428865-4222769(Top 80%)9480(Top 78%)9480(Top 728%)
24M24.00 mi1.00 mi22311-468912-478912-4723404(Top 82%)9829(Top 80%)9829(Top 754%)
40K24.85 mi0.85 mi22333-228939-278939-2722962(Top 81%)9680(Top 79%)9680(Top 743%)
25.2M25.20 mi0.35 mi22364-318968-298968-2924255(Top 85%)10283(Top 84%)10283(Top 789%)
Finish26.22 mi1.02 mi22434-709021-539021-5324146(Top 85%)10240(Top 84%)10240(Top 786%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23520

Females

9388

F50-54

9388

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

23928

Females

9641

F50-54

9641

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23520

Females

9388

F50-54

9388

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

23094

Females

9202

F50-54

9202

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

22303

Females

8785

F50-54

8785

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

21441

Females

8332

F50-54

8332

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

20283

Females

7819

F50-54

7819

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

20513

Females

8090

F50-54

8090

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

20473

Females

8173

F50-54

8173

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

21805

Females

8939

F50-54

8939

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22769

Females

9480

F50-54

9480

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23404

Females

9829

F50-54

9829

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

22962

Females

9680

F50-54

9680

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24255

Females

10283

F50-54

10283

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24146

Females

10240

F50-54

10240

Passing Analysis

Category:
Athletes Passed
2008
Passed By
1117
Net Change
+891
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23325
5K → 10K117445-328#23325#23653
10K → 15K185154+31#23653#23622
15K → 20K20780+127#23622#23495
20K → Half805+75#23495#23420
Half → 25K34313+330#23420#23090
25K → 30K5345+529#23090#22561
30K → 20M1639+154#22561#22407
20M → 21M14722+125#22407#22282
21M → 35K5225+27#22282#22255
35K → 23M7484-10#22255#22265
23M → 24M4389-46#22265#22311
24M → 40K3557-22#22311#22333
40K → 25.2M839-31#22333#22364
25.2M → Finish2090-70#22364#22434
TOTALS20081117+891
📊

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