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BOSTON MARATHON 2025

Bonnie Alexander

Bib: 18592•F

NC

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
8:29/mi
26:20
↑ 97↓ 3451.5%
10K· 6.21 mi
8:47/mi
53:38
↑ 79↓ 1380.4%
15K· 9.32 mi
9:00/mi
1:21:37
↑ 67↓ 78
20K· 12.43 mi
8:56/mi
1:49:23
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:55:16
↑ 19↓ 370.5%
25K· 15.53 mi
8:53/mi
2:16:49
↑ 66↓ 880.2%
30K· 18.64 mi
9:10/mi
2:45:19
↑ 181↓ 1480.2%
20M
9:27/mi
2:58:09
↑ 64↓ 500.2%
21M
9:55/mi
3:08:04
↑ 106↓ 241.6%
35K· 21.75 mi
9:04/mi
3:14:51
↑ 17↓ 861.7%
23M
9:47/mi
3:27:06
↑ 23↓ 630.6%
24M
8:53/mi
3:35:59
↓ 821.3%
40K· 24.85 mi
9:05/mi
3:43:45
↓ 200.3%
25.2M
9:52/mi
3:47:09
↑ 13↓ 160.2%
Finish· 26.22 mi
8:26/mi
3:55:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:16
Pace8:48 /mi
2nd Half
Distance13.11 mi
Time2:00:29
Pace9:11 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:0826:208:2926:20
8:29
-
10K
6.21 mi11:44:2653:388:3827:18
8:47
+0:18
15K
9.32 mi12:12:251:21:378:4527:59
9:00
+0:13
20K
12.43 mi12:40:111:49:238:4827:46
8:56
-0:04
Half
13.11 mi12:46:041:55:168:485:53
8:37
-0:19
25K
15.53 mi13:07:372:16:498:4821:33
8:53
+0:16
30K
18.64 mi13:36:072:45:198:5228:30
9:10
+0:17
20M
20.00 mi13:48:572:58:098:5412:50
9:27
+0:17
21M
21.00 mi13:58:523:08:048:579:55
9:55
+0:28
35K
21.75 mi14:05:393:14:518:586:47
9:04
-0:51
23M
23.00 mi14:17:543:27:069:0012:15
9:47
+0:43
24M
24.00 mi14:26:473:35:599:008:53
8:53
-0:54
40K
24.85 mi14:34:333:43:459:007:46
9:05
+0:12
25.2M
25.20 mi14:37:573:47:099:013:24
9:52
+0:47
Finish
26.22 mi14:46:333:55:459:008:36
8:26
-1:26

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

8:26 /mi

Average Pace

9:00 /mi

Slowest Pace

9:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:21

84% of race

Time at Steady Pace

38:24

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:59 /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 mi11:17:0826:208:2926:20
8:29
#19768
10K
6.21 mi11:44:2653:388:3827:18
8:47
#20567
15K
9.32 mi12:12:251:21:378:4527:59
9:00
#21033
20K
12.43 mi12:40:111:49:238:4827:46
8:56
#20945
Half
13.11 mi12:46:041:55:168:485:53
8:37
#20887
25K
15.53 mi13:07:372:16:498:4821:33
8:53
#20668
30K
18.64 mi13:36:072:45:198:5228:30
9:10
#20229
20M
20.00 mi13:48:572:58:098:5412:50
9:27
#20118
21M
21.00 mi13:58:523:08:048:579:55
9:55
#19972
35K
21.75 mi14:05:393:14:518:586:47
9:04
#19929
23M
23.00 mi14:17:543:27:069:0012:15
9:47
#19938
24M
24.00 mi14:26:473:35:599:008:53
8:53
#19798
40K
24.85 mi14:34:333:43:459:007:46
9:05
#19701
25.2M
25.20 mi14:37:573:47:099:013:24
9:52
#19632
Finish
26.22 mi14:46:333:55:459:008:36
8:26
#19508
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi197687373737322086(Top 78%)8603(Top 70%)8603(Top 157%)
10K6.21 mi3.10 mi20567-7997807-4347807-43421351(Top 75%)8224(Top 67%)8224(Top 150%)
15K9.32 mi3.11 mi21033-4668058-2518058-25122086(Top 78%)8603(Top 70%)8603(Top 157%)
20K12.43 mi3.11 mi20945+888004+548004+5420657(Top 73%)7868(Top 64%)7868(Top 144%)
Half13.11 mi0.68 mi20887+587970+347970+3419970(Top 70%)7458(Top 61%)7458(Top 136%)
25K15.53 mi2.42 mi20668+2197857+1137857+11319385(Top 68%)7198(Top 59%)7198(Top 132%)
30K18.64 mi3.11 mi20229+4397657+2007657+20018525(Top 65%)6849(Top 56%)6849(Top 125%)
20M20.00 mi1.36 mi20118+1117620+377620+3718927(Top 67%)7226(Top 59%)7226(Top 132%)
21M21.00 mi1.00 mi19972+1467555+657555+6518005(Top 63%)6799(Top 56%)6799(Top 124%)
35K21.75 mi0.75 mi19929+437547+87547+818598(Top 65%)7252(Top 59%)7252(Top 133%)
23M23.00 mi1.25 mi19938-97587-407587-4019755(Top 70%)7920(Top 65%)7920(Top 145%)
24M24.00 mi1.00 mi19798+1407535+527535+5216801(Top 59%)6391(Top 52%)6391(Top 117%)
40K24.85 mi0.85 mi19701+977495+407495+4016812(Top 59%)6492(Top 53%)6492(Top 119%)
25.2M25.20 mi0.35 mi19632+697469+267469+2616468(Top 58%)6329(Top 52%)6329(Top 116%)
Finish26.22 mi1.02 mi19508+1247414+557414+5515877(Top 56%)5966(Top 49%)5966(Top 109%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

22086

Females

8603

F18-39

8603

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21351

Females

8224

F18-39

8224

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

22086

Females

8603

F18-39

8603

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20657

Females

7868

F18-39

7868

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

19970

Females

7458

F18-39

7458

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

19385

Females

7198

F18-39

7198

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

18525

Females

6849

F18-39

6849

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

18927

Females

7226

F18-39

7226

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

18005

Females

6799

F18-39

6799

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

18598

Females

7252

F18-39

7252

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

19755

Females

7920

F18-39

7920

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

16801

Females

6391

F18-39

6391

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

16812

Females

6492

F18-39

6492

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16468

Females

6329

F18-39

6329

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15877

Females

5966

F18-39

5966

Passing Analysis

Category:
Athletes Passed
2106
Passed By
1846
Net Change
+260
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19768
5K → 10K61860-799#19768#20567
10K → 15K75541-466#20567#21033
15K → 20K229141+88#21033#20945
20K → Half657+58#20945#20887
Half → 25K26849+219#20887#20668
25K → 30K46930+439#20668#20229
30K → 20M14938+111#20229#20118
20M → 21M16923+146#20118#19972
21M → 35K7330+43#19972#19929
35K → 23M8291-9#19929#19938
23M → 24M1488+140#19938#19798
24M → 40K11316+97#19798#19701
40K → 25.2M712+69#19701#19632
25.2M → Finish13410+124#19632#19508
TOTALS21061846+260
📊

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