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BOSTON MARATHON 2025

Maura Koonz

Bib: 14333•F

WI

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
7:24/mi
22:58
↑ 97↓ 3451.5%
10K· 6.21 mi
7:31/mi
46:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:32/mi
1:09:41
↑ 67↓ 78
20K· 12.43 mi
8:00/mi
1:34:33
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:39:58
↑ 19↓ 370.5%
25K· 15.53 mi
8:40/mi
2:00:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:33/mi
2:30:40
↑ 181↓ 1480.2%
20M
9:48/mi
2:43:59
↑ 64↓ 500.2%
21M
10:52/mi
2:54:51
↑ 106↓ 241.6%
35K· 21.75 mi
9:20/mi
3:01:50
↑ 17↓ 861.7%
23M
10:09/mi
3:14:33
↑ 23↓ 630.6%
24M
10:08/mi
3:24:41
↓ 821.3%
40K· 24.85 mi
10:26/mi
3:33:36
↓ 200.3%
25.2M
11:48/mi
3:37:40
↑ 13↓ 160.2%
Finish· 26.22 mi
10:30/mi
3:48:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:58
Pace7:38 /mi
2nd Half
Distance13.11 mi
Time2:08:24
Pace9:48 /mi
📊Positive Split: 28.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:2022:587:2422:58
7:24
-
10K
6.21 mi11:16:4046:187:2723:20
7:31
+0:07
15K
9.32 mi11:40:031:09:417:2923:23
7:32
+0:01
20K
12.43 mi12:04:551:34:337:3624:52
8:00
+0:28
Half
13.11 mi12:10:201:39:587:385:25
7:56
-0:04
25K
15.53 mi12:31:212:00:597:4721:01
8:40
+0:44
30K
18.64 mi13:01:022:30:408:0529:41
9:33
+0:53
20M
20.00 mi13:14:212:43:598:1213:19
9:48
+0:15
21M
21.00 mi13:25:132:54:518:2010:52
10:52
+1:04
35K
21.75 mi13:32:123:01:508:226:59
9:20
-1:32
23M
23.00 mi13:44:553:14:338:2812:43
10:09
+0:49
24M
24.00 mi13:55:033:24:418:3210:08
10:08
-0:01
40K
24.85 mi14:03:583:33:368:368:55
10:26
+0:18
25.2M
25.20 mi14:08:023:37:408:384:04
11:48
+1:22
Finish
26.22 mi14:18:443:48:228:4310:42
10:30
-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

7:24 /mi

Average Pace

8:43 /mi

Slowest Pace

11:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:59

53% of race

Time at Steady Pace

1:12:50

32% of race

Time at Slower Pace

34:33

15% of race

Average Pace: 8:43 /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 mi10:53:2022:587:2422:58
7:24
#11272
10K
6.21 mi11:16:4046:187:2723:20
7:31
#11721
15K
9.32 mi11:40:031:09:417:2923:23
7:32
#11779
20K
12.43 mi12:04:551:34:337:3624:52
8:00
#12560
Half
13.11 mi12:10:201:39:587:385:25
7:56
#12716
25K
15.53 mi12:31:212:00:597:4721:01
8:40
#13800
30K
18.64 mi13:01:022:30:408:0529:41
9:33
#15383
20M
20.00 mi13:14:212:43:598:1213:19
9:48
#15863
21M
21.00 mi13:25:132:54:518:2010:52
10:52
#16229
35K
21.75 mi13:32:123:01:508:226:59
9:20
#16362
23M
23.00 mi13:44:553:14:338:2812:43
10:09
#16743
24M
24.00 mi13:55:033:24:418:3210:08
10:08
#17085
40K
24.85 mi14:03:583:33:368:368:55
10:26
#17370
25.2M
25.20 mi14:08:023:37:408:384:04
11:48
#17509
Finish
26.22 mi14:18:443:48:228:4310:42
10:30
#17932
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi112722417241712029(Top 42%)2924(Top 24%)2924(Top 53%)
10K6.21 mi3.10 mi11721-4492659-2422659-24212221(Top 43%)2946(Top 24%)2946(Top 54%)
15K9.32 mi3.11 mi11779-582705-462705-4612029(Top 42%)2924(Top 24%)2924(Top 53%)
20K12.43 mi3.11 mi12560-7813182-4773182-47714982(Top 53%)4642(Top 38%)4642(Top 85%)
Half13.11 mi0.68 mi12716-1563288-1063288-10615523(Top 55%)4923(Top 40%)4923(Top 90%)
25K15.53 mi2.42 mi13800-10843932-6443932-64418208(Top 64%)6539(Top 53%)6539(Top 120%)
30K18.64 mi3.11 mi15383-15834881-9494881-94920158(Top 71%)7737(Top 63%)7737(Top 141%)
20M20.00 mi1.36 mi15863-4805193-3125193-31220305(Top 71%)7963(Top 65%)7963(Top 146%)
21M21.00 mi1.00 mi16229-3665425-2325425-23221041(Top 74%)8462(Top 69%)8462(Top 155%)
35K21.75 mi0.75 mi16362-1335518-935518-9319718(Top 69%)7826(Top 64%)7826(Top 143%)
23M23.00 mi1.25 mi16743-3815777-2595777-25920990(Top 74%)8547(Top 70%)8547(Top 156%)
24M24.00 mi1.00 mi17085-3426010-2336010-23321744(Top 77%)8993(Top 74%)8993(Top 164%)
40K24.85 mi0.85 mi17370-2856197-1876197-18721725(Top 76%)9050(Top 74%)9050(Top 165%)
25.2M25.20 mi0.35 mi17509-1396300-1036300-10322774(Top 80%)9542(Top 78%)9542(Top 174%)
Finish26.22 mi1.02 mi17932-4236532-2326532-23224287(Top 86%)10308(Top 84%)10308(Top 188%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

12029

Females

2924

F18-39

2924

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

12221

Females

2946

F18-39

2946

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

12029

Females

2924

F18-39

2924

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

14982

Females

4642

F18-39

4642

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

15523

Females

4923

F18-39

4923

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

18208

Females

6539

F18-39

6539

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

20158

Females

7737

F18-39

7737

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20305

Females

7963

F18-39

7963

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

21041

Females

8462

F18-39

8462

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

19718

Females

7826

F18-39

7826

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

20990

Females

8547

F18-39

8547

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21744

Females

8993

F18-39

8993

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21725

Females

9050

F18-39

9050

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22774

Females

9542

F18-39

9542

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2story building
+22ft-21ft

Overall

24287

Females

10308

F18-39

10308

Passing Analysis

Category:
Athletes Passed
577
Passed By
7237
Net Change
-6660
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11272
5K → 10K97546-449#11272#11721
10K → 15K150208-58#11721#11779
15K → 20K53834-781#11779#12560
20K → Half2158-156#12560#12716
Half → 25K371121-1084#12716#13800
25K → 30K391622-1583#13800#15383
30K → 20M37517-480#15383#15863
20M → 21M29395-366#15863#16229
21M → 35K36169-133#16229#16362
35K → 23M35416-381#16362#16743
23M → 24M25367-342#16743#17085
24M → 40K20305-285#17085#17370
40K → 25.2M6145-139#17370#17509
25.2M → Finish11434-423#17509#17932
TOTALS5777237-6660
📊

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