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BOSTON MARATHON 2025

Erin Donnelly

Bib: 27120•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
8:59/mi
27:56
↑ 97↓ 3451.5%
10K· 6.21 mi
8:55/mi
55:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:23:14
↑ 67↓ 78
20K· 12.43 mi
9:17/mi
1:52:05
↑ 106↓ 860.1%
Half· 13.11 mi
8:54/mi
1:58:09
↑ 19↓ 370.5%
25K· 15.53 mi
9:08/mi
2:20:18
↑ 66↓ 880.2%
30K· 18.64 mi
9:44/mi
2:50:31
↑ 181↓ 1480.2%
20M
9:29/mi
3:03:24
↑ 64↓ 500.2%
21M
10:07/mi
3:13:31
↑ 106↓ 241.6%
35K· 21.75 mi
9:23/mi
3:20:32
↑ 17↓ 861.7%
23M
10:12/mi
3:33:18
↑ 23↓ 630.6%
24M
9:43/mi
3:43:01
↓ 821.3%
40K· 24.85 mi
10:30/mi
3:52:00
↓ 200.3%
25.2M
11:56/mi
3:56:07
↑ 13↓ 160.2%
Finish· 26.22 mi
10:11/mi
4:06:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:09
Pace9:01 /mi
2nd Half
Distance13.11 mi
Time2:08:21
Pace9:47 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:1027:568:5927:56
8:59
-
10K
6.21 mi12:15:5155:378:5727:41
8:55
-0:04
15K
9.32 mi12:43:281:23:148:5627:37
8:53
-0:02
20K
12.43 mi13:12:191:52:059:0128:51
9:17
+0:24
Half
13.11 mi13:18:231:58:099:016:04
8:54
-0:23
25K
15.53 mi13:40:322:20:189:0222:09
9:08
+0:14
30K
18.64 mi14:10:452:50:319:0930:13
9:44
+0:36
20M
20.00 mi14:23:383:03:249:1012:53
9:29
-0:15
21M
21.00 mi14:33:453:13:319:1310:07
10:07
+0:38
35K
21.75 mi14:40:463:20:329:137:01
9:23
-0:44
23M
23.00 mi14:53:323:33:189:1612:46
10:12
+0:49
24M
24.00 mi15:03:153:43:019:189:43
9:43
-0:29
40K
24.85 mi15:12:143:52:009:208:59
10:30
+0:47
25.2M
25.20 mi15:16:213:56:079:224:07
11:56
+1:26
Finish
26.22 mi15:26:444:06:309:2510:23
10:11
-1:45

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

8:53 /mi

Average Pace

9:25 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:18

36% of race

Time at Steady Pace

1:50:50

45% of race

Time at Slower Pace

46:22

19% of race

Average Pace: 9:24 /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 mi11:48:1027:568:5927:56
8:59
#22379
10K
6.21 mi12:15:5155:378:5727:41
8:55
#22212
15K
9.32 mi12:43:281:23:148:5627:37
8:53
#21966
20K
12.43 mi13:12:191:52:059:0128:51
9:17
#22018
Half
13.11 mi13:18:231:58:099:016:04
8:54
#21984
25K
15.53 mi13:40:322:20:189:0222:09
9:08
#21706
30K
18.64 mi14:10:452:50:319:0930:13
9:44
#21535
20M
20.00 mi14:23:383:03:249:1012:53
9:29
#21330
21M
21.00 mi14:33:453:13:319:1310:07
10:07
#21197
35K
21.75 mi14:40:463:20:329:137:01
9:23
#21125
23M
23.00 mi14:53:323:33:189:1612:46
10:12
#21116
24M
24.00 mi15:03:153:43:019:189:43
9:43
#21084
40K
24.85 mi15:12:143:52:009:208:59
10:30
#21137
25.2M
25.20 mi15:16:213:56:079:224:07
11:56
#21171
Finish
26.22 mi15:26:444:06:309:2510:23
10:11
#21266
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi223798844884421531(Top 76%)8298(Top 68%)8298(Top 152%)
10K6.21 mi3.10 mi22212+1678731+1138731+11321986(Top 77%)8589(Top 70%)8589(Top 157%)
15K9.32 mi3.11 mi21966+2468585+1468585+14621531(Top 76%)8298(Top 68%)8298(Top 152%)
20K12.43 mi3.11 mi22018-528608-238608-2322234(Top 78%)8716(Top 71%)8716(Top 159%)
Half13.11 mi0.68 mi21984+348588+208588+2021396(Top 75%)8257(Top 68%)8257(Top 151%)
25K15.53 mi2.42 mi21706+2788445+1438445+14320525(Top 72%)7831(Top 64%)7831(Top 143%)
30K18.64 mi3.11 mi21535+1718373+728373+7220770(Top 73%)8102(Top 66%)8102(Top 148%)
20M20.00 mi1.36 mi21330+2058286+878286+8719110(Top 67%)7326(Top 60%)7326(Top 134%)
21M21.00 mi1.00 mi21197+1338230+568230+5618761(Top 66%)7219(Top 59%)7219(Top 132%)
35K21.75 mi0.75 mi21125+728205+258205+2519905(Top 70%)7936(Top 65%)7936(Top 145%)
23M23.00 mi1.25 mi21116+98227-228227-2221114(Top 74%)8613(Top 70%)8613(Top 157%)
24M24.00 mi1.00 mi21084+328239-128239-1220456(Top 72%)8330(Top 68%)8330(Top 152%)
40K24.85 mi0.85 mi21137-538277-388277-3821965(Top 77%)9176(Top 75%)9176(Top 168%)
25.2M25.20 mi0.35 mi21171-348303-268303-2623113(Top 81%)9711(Top 79%)9711(Top 178%)
Finish26.22 mi1.02 mi21266-958368-658368-6523501(Top 83%)9923(Top 81%)9923(Top 181%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21531

Females

8298

F18-39

8298

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

21986

Females

8589

F18-39

8589

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21531

Females

8298

F18-39

8298

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22234

Females

8716

F18-39

8716

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

21396

Females

8257

F18-39

8257

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

20525

Females

7831

F18-39

7831

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20770

Females

8102

F18-39

8102

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

19110

Females

7326

F18-39

7326

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

18761

Females

7219

F18-39

7219

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

19905

Females

7936

F18-39

7936

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

21114

Females

8613

F18-39

8613

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20456

Females

8330

F18-39

8330

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21965

Females

9176

F18-39

9176

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

23113

Females

9711

F18-39

9711

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

23501

Females

9923

F18-39

9923

Passing Analysis

Category:
Athletes Passed
2203
Passed By
1090
Net Change
+1113
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22379
5K → 10K350183+167#22379#22212
10K → 15K32781+246#22212#21966
15K → 20K176228-52#21966#22018
20K → Half5016+34#22018#21984
Half → 25K30628+278#21984#21706
25K → 30K285114+171#21706#21535
30K → 20M22015+205#21535#21330
20M → 21M16229+133#21330#21197
21M → 35K9321+72#21197#21125
35K → 23M9384+9#21125#21116
23M → 24M7745+32#21116#21084
24M → 40K2881-53#21084#21137
40K → 25.2M1852-34#21137#21171
25.2M → Finish18113-95#21171#21266
TOTALS22031090+1113
📊

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