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BOSTON MARATHON 2025

Fiona Collins

Bib: 12837•F

LA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 48%
Gender (Female)
#0 / 12228
Top 34%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:40
Rank: #10351
Start → 5K
22:40 | 7:18/mi
10K· 6.21 mi
46:45
Rank: #12348 (-1997)
5K → 10K
24:05 | 7:45/mi
15K· 9.32 mi
1:10:56
Rank: #12958 (-610)
10K → 15K
24:11 | 7:47/mi
20K· 12.43 mi
1:36:21
Rank: #13840 (-882)
15K → 20K
25:25 | 8:11/mi
Half· 13.11 mi
1:41:46
Rank: #13939 (-99)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:01:25
Rank: #14016 (-77)
Half → 25K
19:39 | 8:06/mi
30K· 18.64 mi
2:27:44
Rank: #14078 (-62)
25K → 30K
26:19 | 8:28/mi
20M
2:39:24
Rank: #14065 (+13)
30K → 20M
11:40 | 8:35/mi
21M
2:48:28
Rank: #14017 (+48)
20M → 21M
9:04 | 9:04/mi
35K· 21.75 mi
2:54:43
Rank: #14048 (-31)
21M → 35K
6:15 | 8:21/mi
23M
3:05:21
Rank: #13997 (+51)
35K → 23M
10:38 | 8:30/mi
24M
3:13:37
Rank: #13950 (+47)
23M → 24M
8:16 | 8:16/mi
40K· 24.85 mi
3:20:43
Rank: #13845 (+105)
24M → 40K
7:06 | 8:18/mi
25.2M
3:23:49
Rank: #13796 (+49)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:31:39
Rank: #13655 (+141)
25.2M → Finish
7:50 | 7:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:46
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time1:49:53
Pace8:23 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5722:407:1822:40
7:18
-
10K
6.21 mi11:14:0246:457:3124:05
7:45
+0:27
15K
9.32 mi11:38:131:10:567:3724:11
7:47
+0:02
20K
12.43 mi12:03:381:36:217:4525:25
8:11
+0:24
Half
13.11 mi12:09:031:41:467:465:25
7:56
-0:15
25K
15.53 mi12:28:422:01:257:4919:39
8:06
+0:10
30K
18.64 mi12:55:012:27:447:5626:19
8:28
+0:22
20M
20.00 mi13:06:412:39:247:5811:40
8:35
+0:07
21M
21.00 mi13:15:452:48:288:019:04
9:04
+0:29
35K
21.75 mi13:22:002:54:438:026:15
8:21
-0:43
23M
23.00 mi13:32:383:05:218:0410:38
8:30
+0:09
24M
24.00 mi13:40:543:13:378:048:16
8:16
-0:14
40K
24.85 mi13:48:003:20:438:057:06
8:18
+0:02
25.2M
25.20 mi13:51:063:23:498:053:06
8:59
+0:41
Finish
26.22 mi13:58:563:31:398:057:50
7:41
-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

7:18 /mi

Average Pace

8:05 /mi

Slowest Pace

9:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:11

40% of race

Time at Steady Pace

1:33:00

44% of race

Time at Slower Pace

34:28

16% of race

Average Pace: 8:04 /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 mi10:49:5722:407:1822:40
7:18
#10351
10K
6.21 mi11:14:0246:457:3124:05
7:45
#12348
15K
9.32 mi11:38:131:10:567:3724:11
7:47
#12958
20K
12.43 mi12:03:381:36:217:4525:25
8:11
#13840
Half
13.11 mi12:09:031:41:467:465:25
7:56
#13939
25K
15.53 mi12:28:422:01:257:4919:39
8:06
#14016
30K
18.64 mi12:55:012:27:447:5626:19
8:28
#14078
20M
20.00 mi13:06:412:39:247:5811:40
8:35
#14065
21M
21.00 mi13:15:452:48:288:019:04
9:04
#14017
35K
21.75 mi13:22:002:54:438:026:15
8:21
#14048
23M
23.00 mi13:32:383:05:218:0410:38
8:30
#13997
24M
24.00 mi13:40:543:13:378:048:16
8:16
#13950
40K
24.85 mi13:48:003:20:438:057:06
8:18
#13845
25.2M
25.20 mi13:51:063:23:498:053:06
8:59
#13796
Finish
26.22 mi13:58:563:31:398:057:50
7:41
#13655
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi103511970197014244(Top 50%)4167(Top 34%)4167(Top 76%)
10K6.21 mi3.10 mi12348-19972989-10192989-101914355(Top 51%)4167(Top 34%)4167(Top 76%)
15K9.32 mi3.11 mi12958-6103364-3753364-37514244(Top 50%)4167(Top 34%)4167(Top 76%)
20K12.43 mi3.11 mi13840-8823923-5593923-55916179(Top 57%)5318(Top 43%)5318(Top 97%)
Half13.11 mi0.68 mi13939-993974-513974-5115435(Top 54%)4835(Top 40%)4835(Top 88%)
25K15.53 mi2.42 mi14016-774054-804054-8014681(Top 52%)4575(Top 37%)4575(Top 84%)
30K18.64 mi3.11 mi14078-624153-994153-9914587(Top 51%)4671(Top 38%)4671(Top 85%)
20M20.00 mi1.36 mi14065+134177-244177-2414349(Top 51%)4689(Top 38%)4689(Top 86%)
21M21.00 mi1.00 mi14017+484176+14176+113915(Top 49%)4584(Top 37%)4584(Top 84%)
35K21.75 mi0.75 mi14048-314212-364212-3614619(Top 51%)5022(Top 41%)5022(Top 92%)
23M23.00 mi1.25 mi13997+514218-64218-613285(Top 47%)4423(Top 36%)4423(Top 81%)
24M24.00 mi1.00 mi13950+474230-124230-1213049(Top 46%)4340(Top 35%)4340(Top 79%)
40K24.85 mi0.85 mi13845+1054208+224208+2212192(Top 43%)4014(Top 33%)4014(Top 73%)
25.2M25.20 mi0.35 mi13796+494193+154193+1511810(Top 42%)3886(Top 32%)3886(Top 71%)
Finish26.22 mi1.02 mi13655+1414128+654128+6510655(Top 38%)3300(Top 27%)3300(Top 60%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21stories
+97ft-345ft

Overall

14244

Females

4167

F18-39

4167

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

14355

Females

4167

F18-39

4167

10K→15K

6.2 - 9.3 mi

Top 50%
×3stories
+67ft-78ft

Overall

14244

Females

4167

F18-39

4167

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

16179

Females

5318

F18-39

5318

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

15435

Females

4835

F18-39

4835

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14681

Females

4575

F18-39

4575

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

14587

Females

4671

F18-39

4671

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

14349

Females

4689

F18-39

4689

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

13915

Females

4584

F18-39

4584

21M→35K

21.0 - 21.8 mi

Top 51%
×7stories
+17ft-86ft

Overall

14619

Females

5022

F18-39

5022

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

13285

Females

4423

F18-39

4423

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

13049

Females

4340

F18-39

4340

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12192

Females

4014

F18-39

4014

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11810

Females

3886

F18-39

3886

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10655

Females

3300

F18-39

3300

Passing Analysis

Category:
Athletes Passed
1423
Passed By
4727
Net Change
-3304
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10351
5K → 10K112008-1997#10351#12348
10K → 15K56666-610#12348#12958
15K → 20K53935-882#12958#13840
20K → Half12111-99#13840#13939
Half → 25K144221-77#13939#14016
25K → 30K244306-62#14016#14078
30K → 20M124111+13#14078#14065
20M → 21M12981+48#14065#14017
21M → 35K5687-31#14017#14048
35K → 23M13786+51#14048#13997
23M → 24M10457+47#13997#13950
24M → 40K14237+105#13950#13845
40K → 25.2M5910+49#13845#13796
25.2M → Finish15211+141#13796#13655
TOTALS14234727-3304
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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