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BOSTON MARATHON 2025

Byrne Fahey

Bib: 27923•F

MA

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
8:39/mi
26:52
↑ 97↓ 3451.5%
10K· 6.21 mi
8:41/mi
53:51
↑ 79↓ 1380.4%
15K· 9.32 mi
8:51/mi
1:21:22
↑ 67↓ 78
20K· 12.43 mi
9:22/mi
1:50:27
↑ 106↓ 860.1%
Half· 13.11 mi
9:05/mi
1:56:39
↑ 19↓ 370.5%
25K· 15.53 mi
9:56/mi
2:20:43
↑ 66↓ 880.2%
30K· 18.64 mi
11:15/mi
2:55:40
↑ 181↓ 1480.2%
20M
10:00/mi
3:09:16
↑ 64↓ 500.2%
21M
10:56/mi
3:20:12
↑ 106↓ 241.6%
35K· 21.75 mi
9:35/mi
3:27:22
↑ 17↓ 861.7%
23M
10:21/mi
3:40:20
↑ 23↓ 630.6%
24M
9:55/mi
3:50:15
↓ 821.3%
40K· 24.85 mi
8:54/mi
3:57:52
↓ 200.3%
25.2M
10:15/mi
4:01:24
↑ 13↓ 160.2%
Finish· 26.22 mi
9:15/mi
4:10:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:39
Pace8:54 /mi
2nd Half
Distance13.11 mi
Time2:14:11
Pace10:14 /mi
📊Positive Split: 15.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0726:528:3926:52
8:39
-
10K
6.21 mi12:17:0653:518:4026:59
8:41
+0:02
15K
9.32 mi12:44:371:21:228:4427:31
8:51
+0:10
20K
12.43 mi13:13:421:50:278:5329:05
9:22
+0:31
Half
13.11 mi13:19:541:56:398:546:12
9:05
-0:17
25K
15.53 mi13:43:582:20:439:0424:04
9:56
+0:51
30K
18.64 mi14:18:552:55:409:2534:57
11:15
+1:19
20M
20.00 mi14:32:313:09:169:2813:36
10:00
-1:15
21M
21.00 mi14:43:273:20:129:3210:56
10:56
+0:56
35K
21.75 mi14:50:373:27:229:327:10
9:35
-1:21
23M
23.00 mi15:03:353:40:209:3512:58
10:21
+0:46
24M
24.00 mi15:13:303:50:159:369:55
9:55
-0:26
40K
24.85 mi15:21:073:57:529:347:37
8:54
-1:01
25.2M
25.20 mi15:24:394:01:249:353:32
10:15
+1:21
Finish
26.22 mi15:34:054:10:509:349:26
9:15
-1:00

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

8:39 /mi

Average Pace

9:34 /mi

Slowest Pace

11:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:11

38% of race

Time at Steady Pace

1:19:40

32% of race

Time at Slower Pace

1:15:59

30% of race

Average Pace: 9:34 /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 mi11:50:0726:528:3926:52
8:39
#20745
10K
6.21 mi12:17:0653:518:4026:59
8:41
#20732
15K
9.32 mi12:44:371:21:228:4427:31
8:51
#20909
20K
12.43 mi13:13:421:50:278:5329:05
9:22
#21380
Half
13.11 mi13:19:541:56:398:546:12
9:05
#21425
25K
15.53 mi13:43:582:20:439:0424:04
9:56
#21828
30K
18.64 mi14:18:552:55:409:2534:57
11:15
#22569
20M
20.00 mi14:32:313:09:169:2813:36
10:00
#22447
21M
21.00 mi14:43:273:20:129:3210:56
10:56
#22354
35K
21.75 mi14:50:373:27:229:327:10
9:35
#22290
23M
23.00 mi15:03:353:40:209:3512:58
10:21
#22217
24M
24.00 mi15:13:303:50:159:369:55
9:55
#22167
40K
24.85 mi15:21:073:57:529:347:37
8:54
#21969
25.2M
25.20 mi15:24:394:01:249:353:32
10:15
#21909
Finish
26.22 mi15:34:054:10:509:349:26
9:15
#21837
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi207457941794121324(Top 75%)8182(Top 67%)8182(Top 150%)
10K6.21 mi3.10 mi20732+137905+367905+3620806(Top 73%)7925(Top 65%)7925(Top 145%)
15K9.32 mi3.11 mi20909-1777997-927997-9221324(Top 75%)8182(Top 67%)8182(Top 150%)
20K12.43 mi3.11 mi21380-4718247-2508247-25022454(Top 79%)8839(Top 72%)8839(Top 162%)
Half13.11 mi0.68 mi21425-458275-288275-2822202(Top 78%)8719(Top 71%)8719(Top 159%)
25K15.53 mi2.42 mi21828-4038515-2408515-24023066(Top 81%)9225(Top 75%)9225(Top 169%)
30K18.64 mi3.11 mi22569-7418948-4338948-43324463(Top 86%)10106(Top 83%)10106(Top 185%)
20M20.00 mi1.36 mi22447+1228899+498899+4920984(Top 74%)8352(Top 68%)8352(Top 153%)
21M21.00 mi1.00 mi22354+938865+348865+3421218(Top 75%)8567(Top 70%)8567(Top 157%)
35K21.75 mi0.75 mi22290+648841+248841+2420644(Top 73%)8326(Top 68%)8326(Top 152%)
23M23.00 mi1.25 mi22217+738841884121604(Top 76%)8878(Top 73%)8878(Top 162%)
24M24.00 mi1.00 mi22167+508833+88833+821126(Top 74%)8671(Top 71%)8671(Top 159%)
40K24.85 mi0.85 mi21969+1988739+948739+9415852(Top 56%)5981(Top 49%)5981(Top 109%)
25.2M25.20 mi0.35 mi21909+608717+228717+2218175(Top 64%)7250(Top 59%)7250(Top 133%)
Finish26.22 mi1.02 mi21837+728694+238694+2320235(Top 71%)8269(Top 68%)8269(Top 151%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21324

Females

8182

F18-39

8182

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

20806

Females

7925

F18-39

7925

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21324

Females

8182

F18-39

8182

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

22454

Females

8839

F18-39

8839

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

22202

Females

8719

F18-39

8719

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

23066

Females

9225

F18-39

9225

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

24463

Females

10106

F18-39

10106

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

20984

Females

8352

F18-39

8352

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21218

Females

8567

F18-39

8567

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20644

Females

8326

F18-39

8326

35K→23M

21.8 - 23.0 mi

Top 76%
×5story building
+23ft-63ft

Overall

21604

Females

8878

F18-39

8878

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

21126

Females

8671

F18-39

8671

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15852

Females

5981

F18-39

5981

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18175

Females

7250

F18-39

7250

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

20235

Females

8269

F18-39

8269

Passing Analysis

Category:
Athletes Passed
1510
Passed By
2602
Net Change
-1092
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20745
5K → 10K289276+13#20745#20732
10K → 15K132309-177#20732#20909
15K → 20K100571-471#20909#21380
20K → Half2065-45#21380#21425
Half → 25K52455-403#21425#21828
25K → 30K49790-741#21828#22569
30K → 20M13917+122#22569#22447
20M → 21M12027+93#22447#22354
21M → 35K7915+64#22354#22290
35K → 23M11340+73#22290#22217
23M → 24M6616+50#22217#22167
24M → 40K1980+198#22167#21969
40K → 25.2M633+60#21969#21909
25.2M → Finish9018+72#21909#21837
TOTALS15102602-1092
📊

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