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BOSTON MARATHON 2025

Margaret Simonds

Bib: 26735•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

Start
0:00:00
Race begins
5K· 3.11 mi
29:09
Rank: #23851
Start → 5K
29:09 | 9:23/mi
10K· 6.21 mi
56:40
Rank: #22892 (+959)
5K → 10K
27:31 | 8:51/mi
15K· 9.32 mi
1:23:23
Rank: #22057 (+835)
10K → 15K
26:43 | 8:36/mi
20K· 12.43 mi
1:50:13
Rank: #21266 (+791)
15K → 20K
26:50 | 8:38/mi
Half· 13.11 mi
1:56:07
Rank: #21213 (+53)
20K → Half
5:54 | 8:39/mi
25K· 15.53 mi
2:17:17
Rank: #20799 (+414)
Half → 25K
21:10 | 8:44/mi
30K· 18.64 mi
2:45:15
Rank: #20207 (+592)
25K → 30K
27:58 | 9:00/mi
20M
2:57:17
Rank: #19908 (+299)
30K → 20M
12:02 | 8:51/mi
21M
3:06:02
Rank: #19481 (+427)
20M → 21M
8:45 | 8:45/mi
35K· 21.75 mi
3:12:12
Rank: #19305 (+176)
21M → 35K
6:10 | 8:15/mi
23M
3:23:05
Rank: #19041 (+264)
35K → 23M
10:53 | 8:42/mi
24M
3:31:09
Rank: #18768 (+273)
23M → 24M
8:04 | 8:04/mi
40K· 24.85 mi
3:38:17
Rank: #18496 (+272)
24M → 40K
7:08 | 8:21/mi
25.2M
3:41:27
Rank: #18409 (+87)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:49:27
Rank: #18198 (+211)
25.2M → Finish
8:00 | 7:51/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:56:07
Pace8:51 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:53:20
Pace8:39 /mi
📊Negative Split: 2.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2029:099:2329:09
9:23
-
10K
6.21 mi12:12:5156:409:0727:31
8:51
-0:32
15K
9.32 mi12:39:341:23:238:5726:43
8:36
-0:15
20K
12.43 mi13:06:241:50:138:5226:50
8:38
+0:02
Half
13.11 mi13:12:181:56:078:515:54
8:39
+0:01
25K
15.53 mi13:33:282:17:178:5021:10
8:44
+0:05
30K
18.64 mi14:01:262:45:158:5227:58
9:00
+0:16
20M
20.00 mi14:13:282:57:178:5212:02
8:51
-0:09
21M
21.00 mi14:22:133:06:028:528:45
8:45
-0:06
35K
21.75 mi14:28:233:12:128:506:10
8:15
-0:30
23M
23.00 mi14:39:163:23:058:5010:53
8:42
+0:27
24M
24.00 mi14:47:203:31:098:488:04
8:04
-0:38
40K
24.85 mi14:54:283:38:178:477:08
8:21
+0:17
25.2M
25.20 mi14:57:383:41:278:473:10
9:11
+0:50
Finish
26.22 mi15:05:383:49:278:458:00
7:51
-1:20

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

7:51 /mi

Average Pace

8:45 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:55

36% of race

Time at Steady Pace

1:57:23

51% of race

Time at Slower Pace

29:09

13% of race

Average Pace: 8:45 /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 mi11:45:2029:099:2329:09
9:23
#23851
10K
6.21 mi12:12:5156:409:0727:31
8:51
#22892
15K
9.32 mi12:39:341:23:238:5726:43
8:36
#22057
20K
12.43 mi13:06:241:50:138:5226:50
8:38
#21266
Half
13.11 mi13:12:181:56:078:515:54
8:39
#21213
25K
15.53 mi13:33:282:17:178:5021:10
8:44
#20799
30K
18.64 mi14:01:262:45:158:5227:58
9:00
#20207
20M
20.00 mi14:13:282:57:178:5212:02
8:51
#19908
21M
21.00 mi14:22:133:06:028:528:45
8:45
#19481
35K
21.75 mi14:28:233:12:128:506:10
8:15
#19305
23M
23.00 mi14:39:163:23:058:5010:53
8:42
#19041
24M
24.00 mi14:47:203:31:098:488:04
8:04
#18768
40K
24.85 mi14:54:283:38:178:477:08
8:21
#18496
25.2M
25.20 mi14:57:383:41:278:473:10
9:11
#18409
Finish
26.22 mi15:05:383:49:278:458:00
7:51
#18198
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi238519617961719925(Top 70%)7401(Top 61%)7401(Top 135%)
10K6.21 mi3.10 mi22892+9599092+5259092+52521676(Top 76%)8404(Top 69%)8404(Top 154%)
15K9.32 mi3.11 mi22057+8358630+4628630+46219925(Top 70%)7401(Top 61%)7401(Top 135%)
20K12.43 mi3.11 mi21266+7918180+4508180+45019068(Top 67%)6954(Top 57%)6954(Top 127%)
Half13.11 mi0.68 mi21213+538147+338147+3320068(Top 71%)7508(Top 61%)7508(Top 137%)
25K15.53 mi2.42 mi20799+4147930+2177930+21718584(Top 65%)6745(Top 55%)6745(Top 123%)
30K18.64 mi3.11 mi20207+5927641+2897641+28917713(Top 62%)6421(Top 53%)6421(Top 117%)
20M20.00 mi1.36 mi19908+2997492+1497492+14916004(Top 56%)5604(Top 46%)5604(Top 102%)
21M21.00 mi1.00 mi19481+4277275+2177275+21712036(Top 42%)3629(Top 30%)3629(Top 66%)
35K21.75 mi0.75 mi19305+1767188+877188+8713962(Top 49%)4674(Top 38%)4674(Top 85%)
23M23.00 mi1.25 mi19041+2647068+1207068+12014541(Top 51%)5099(Top 42%)5099(Top 93%)
24M24.00 mi1.00 mi18768+2736941+1276941+12711742(Top 41%)3695(Top 30%)3695(Top 68%)
40K24.85 mi0.85 mi18496+2726821+1206821+12012483(Top 44%)4192(Top 34%)4192(Top 77%)
25.2M25.20 mi0.35 mi18409+876779+426779+4212943(Top 46%)4501(Top 37%)4501(Top 82%)
Finish26.22 mi1.02 mi18198+2116678+1016678+10111876(Top 42%)3884(Top 32%)3884(Top 71%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

19925

Females

7401

F18-39

7401

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

21676

Females

8404

F18-39

8404

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

19925

Females

7401

F18-39

7401

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

19068

Females

6954

F18-39

6954

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

20068

Females

7508

F18-39

7508

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

18584

Females

6745

F18-39

6745

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

17713

Females

6421

F18-39

6421

30K→20M

18.6 - 20.0 mi

Top 56%
×5stories
+64ft-50ft

Overall

16004

Females

5604

F18-39

5604

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

12036

Females

3629

F18-39

3629

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13962

Females

4674

F18-39

4674

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

14541

Females

5099

F18-39

5099

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11742

Females

3695

F18-39

3695

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12483

Females

4192

F18-39

4192

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12943

Females

4501

F18-39

4501

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

11876

Females

3884

F18-39

3884

Passing Analysis

Category:
Athletes Passed
5737
Passed By
84
Net Change
+5653
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23851
5K → 10K97920+959#23851#22892
10K → 15K8438+835#22892#22057
15K → 20K8009+791#22057#21266
20K → Half6512+53#21266#21213
Half → 25K4217+414#21213#20799
25K → 30K5997+592#20799#20207
30K → 20M3023+299#20207#19908
20M → 21M4270+427#19908#19481
21M → 35K1760+176#19481#19305
35K → 23M2684+264#19305#19041
23M → 24M2763+273#19041#18768
24M → 40K2731+272#18768#18496
40K → 25.2M892+87#18496#18409
25.2M → Finish2198+211#18409#18198
TOTALS573784+5653
📊

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