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BOSTON MARATHON 2025

Mary Sullivan

Bib: 17025•F

RI

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
23:19
Rank: #12318
Start → 5K
23:19 | 7:30/mi
10K· 6.21 mi
47:01
Rank: #12730 (-412)
5K → 10K
23:42 | 7:38/mi
15K· 9.32 mi
1:13:58
Rank: #15808 (-3078)
10K → 15K
26:57 | 8:40/mi
20K· 12.43 mi
1:43:02
Rank: #17946 (-2138)
15K → 20K
29:04 | 9:21/mi
Half· 13.11 mi
1:49:37
Rank: #18384 (-438)
20K → Half
6:35 | 9:39/mi
25K· 15.53 mi
2:13:21
Rank: #19420 (-1036)
Half → 25K
23:44 | 9:47/mi
30K· 18.64 mi
2:43:32
Rank: #19711 (-291)
25K → 30K
30:11 | 9:43/mi
20M
2:55:44
Rank: #19490 (+221)
30K → 20M
12:12 | 8:59/mi
21M
3:05:24
Rank: #19328 (+162)
20M → 21M
9:40 | 9:40/mi
35K· 21.75 mi
3:11:43
Rank: #19190 (+138)
21M → 35K
6:19 | 8:27/mi
23M
3:22:20
Rank: #18855 (+335)
35K → 23M
10:37 | 8:29/mi
24M
3:31:04
Rank: #18737 (+118)
23M → 24M
8:44 | 8:44/mi
40K· 24.85 mi
3:38:53
Rank: #18646 (+91)
24M → 40K
7:49 | 9:09/mi
25.2M
3:42:31
Rank: #18667 (-21)
40K → 25.2M
3:38 | 10:32/mi
Finish· 26.22 mi
3:50:42
Rank: #18473 (+194)
25.2M → Finish
8:11 | 8:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:37
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time2:01:05
Pace9:14 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:2623:197:3023:19
7:30
-
10K
6.21 mi11:37:0847:017:3423:42
7:38
+0:08
15K
9.32 mi12:04:051:13:587:5626:57
8:40
+1:02
20K
12.43 mi12:33:091:43:028:1729:04
9:21
+0:41
Half
13.11 mi12:39:441:49:378:226:35
9:39
+0:18
25K
15.53 mi13:03:282:13:218:3523:44
9:47
+0:08
30K
18.64 mi13:33:392:43:328:4630:11
9:43
-0:04
20M
20.00 mi13:45:512:55:448:4712:12
8:59
-0:44
21M
21.00 mi13:55:313:05:248:509:40
9:40
+0:41
35K
21.75 mi14:01:503:11:438:496:19
8:27
-1:13
23M
23.00 mi14:12:273:22:208:4810:37
8:29
+0:02
24M
24.00 mi14:21:113:31:048:488:44
8:44
+0:15
40K
24.85 mi14:29:003:38:538:487:49
9:09
+0:25
25.2M
25.20 mi14:32:383:42:318:503:38
10:32
+1:23
Finish
26.22 mi14:40:493:50:428:488:11
8:02
-2:30

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

7:30 /mi

Average Pace

8:48 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:12:08

31% of race

Time at Steady Pace

1:24:46

37% of race

Time at Slower Pace

1:13:48

32% of race

Average Pace: 8:48 /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 mi11:13:2623:197:3023:19
7:30
#12318
10K
6.21 mi11:37:0847:017:3423:42
7:38
#12730
15K
9.32 mi12:04:051:13:587:5626:57
8:40
#15808
20K
12.43 mi12:33:091:43:028:1729:04
9:21
#17946
Half
13.11 mi12:39:441:49:378:226:35
9:39
#18384
25K
15.53 mi13:03:282:13:218:3523:44
9:47
#19420
30K
18.64 mi13:33:392:43:328:4630:11
9:43
#19711
20M
20.00 mi13:45:512:55:448:4712:12
8:59
#19490
21M
21.00 mi13:55:313:05:248:509:40
9:40
#19328
35K
21.75 mi14:01:503:11:438:496:19
8:27
#19190
23M
23.00 mi14:12:273:22:208:4810:37
8:29
#18855
24M
24.00 mi14:21:113:31:048:488:44
8:44
#18737
40K
24.85 mi14:29:003:38:538:487:49
9:09
#18646
25.2M
25.20 mi14:32:383:42:318:503:38
10:32
#18667
Finish
26.22 mi14:40:493:50:428:488:11
8:02
#18473
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi123182979297920331(Top 72%)7614(Top 62%)7614(Top 139%)
10K6.21 mi3.10 mi12730-4123197-2183197-21813290(Top 47%)3554(Top 29%)3554(Top 65%)
15K9.32 mi3.11 mi15808-30785019-18225019-182220331(Top 72%)7614(Top 62%)7614(Top 139%)
20K12.43 mi3.11 mi17946-21386306-12876306-128722431(Top 79%)8826(Top 72%)8826(Top 161%)
Half13.11 mi0.68 mi18384-4386558-2526558-25223974(Top 84%)9685(Top 79%)9685(Top 177%)
25K15.53 mi2.42 mi19420-10367156-5987156-59822734(Top 80%)9049(Top 74%)9049(Top 165%)
30K18.64 mi3.11 mi19711-2917357-2017357-20120738(Top 73%)8074(Top 66%)8074(Top 148%)
20M20.00 mi1.36 mi19490+2217259+987259+9816706(Top 59%)5984(Top 49%)5984(Top 109%)
21M21.00 mi1.00 mi19328+1627192+677192+6716900(Top 59%)6210(Top 51%)6210(Top 114%)
35K21.75 mi0.75 mi19190+1387125+677125+6715189(Top 53%)5351(Top 44%)5351(Top 98%)
23M23.00 mi1.25 mi18855+3356970+1556970+15513223(Top 47%)4400(Top 36%)4400(Top 80%)
24M24.00 mi1.00 mi18737+1186924+466924+4615965(Top 56%)5919(Top 48%)5919(Top 108%)
40K24.85 mi0.85 mi18646+916901+236901+2317110(Top 60%)6641(Top 54%)6641(Top 121%)
25.2M25.20 mi0.35 mi18667-216930-296930-2919169(Top 67%)7724(Top 63%)7724(Top 141%)
Finish26.22 mi1.02 mi18473+1946839+916839+9113143(Top 46%)4531(Top 37%)4531(Top 83%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

20331

Females

7614

F18-39

7614

5K→10K

3.1 - 6.2 mi

Top 47%
×5stories
+79ft-138ft

Overall

13290

Females

3554

F18-39

3554

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

20331

Females

7614

F18-39

7614

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

22431

Females

8826

F18-39

8826

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

23974

Females

9685

F18-39

9685

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

22734

Females

9049

F18-39

9049

25K→30K

15.5 - 18.6 mi

Top 73%
×9stories
+181ft-148ft

Overall

20738

Females

8074

F18-39

8074

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16706

Females

5984

F18-39

5984

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

16900

Females

6210

F18-39

6210

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

15189

Females

5351

F18-39

5351

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

13223

Females

4400

F18-39

4400

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15965

Females

5919

F18-39

5919

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17110

Females

6641

F18-39

6641

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

19169

Females

7724

F18-39

7724

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

13143

Females

4531

F18-39

4531

Passing Analysis

Category:
Athletes Passed
1686
Passed By
7841
Net Change
-6155
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12318
5K → 10K121533-412#12318#12730
10K → 15K73085-3078#12730#15808
15K → 20K102148-2138#15808#17946
20K → Half2440-438#17946#18384
Half → 25K251061-1036#18384#19420
25K → 30K141432-291#19420#19711
30K → 20M23817+221#19711#19490
20M → 21M18220+162#19490#19328
21M → 35K1413+138#19328#19190
35K → 23M3350+335#19190#18855
23M → 24M13214+118#18855#18737
24M → 40K12029+91#18737#18646
40K → 25.2M3051-21#18646#18667
25.2M → Finish2028+194#18667#18473
TOTALS16867841-6155
📊

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