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BOSTON MARATHON 2025

Riley O'Sullivan

Bib: 28009•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
31:45
Rank: #26099
Start → 5K
31:45 | 10:13/mi
10K· 6.21 mi
1:02:58
Rank: #25726 (+373)
5K → 10K
31:13 | 10:03/mi
15K· 9.32 mi
1:33:44
Rank: #25433 (+293)
10K → 15K
30:46 | 9:54/mi
20K· 12.43 mi
2:06:42
Rank: #25424 (+9)
15K → 20K
32:58 | 10:37/mi
Half· 13.11 mi
2:13:54
Rank: #25437 (-13)
20K → Half
7:12 | 10:33/mi
25K· 15.53 mi
2:42:02
Rank: #25578 (-141)
Half → 25K
28:08 | 11:36/mi
30K· 18.64 mi
3:17:07
Rank: #25366 (+212)
25K → 30K
35:05 | 11:18/mi
20M
3:33:45
Rank: #25398 (-32)
30K → 20M
16:38 | 12:14/mi
21M
3:45:46
Rank: #25311 (+87)
20M → 21M
12:01 | 12:01/mi
35K· 21.75 mi
3:54:58
Rank: #25344 (-33)
21M → 35K
9:12 | 12:18/mi
23M
4:09:10
Rank: #25287 (+57)
35K → 23M
14:12 | 11:20/mi
24M
4:20:19
Rank: #25242 (+45)
23M → 24M
11:09 | 11:09/mi
40K· 24.85 mi
4:30:23
Rank: #25234 (+8)
24M → 40K
10:04 | 11:46/mi
25.2M
4:34:52
Rank: #25234
40K → 25.2M
4:29 | 13:00/mi
Finish· 26.22 mi
4:45:21
Rank: #25209 (+25)
25.2M → Finish
10:29 | 10:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:54
Pace10:13 /mi
2nd Half
Distance13.11 mi
Time2:31:27
Pace11:33 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:4731:4510:1331:45
10:13
-
10K
6.21 mi12:24:001:02:5810:0831:13
10:03
-0:10
15K
9.32 mi12:54:461:33:4410:0330:46
9:54
-0:09
20K
12.43 mi13:27:442:06:4210:1232:58
10:37
+0:43
Half
13.11 mi13:34:562:13:5410:137:12
10:33
-0:04
25K
15.53 mi14:03:042:42:0210:2628:08
11:36
+1:03
30K
18.64 mi14:38:093:17:0710:3435:05
11:18
-0:18
20M
20.00 mi14:54:473:33:4510:4116:38
12:14
+0:56
21M
21.00 mi15:06:483:45:4610:4512:01
12:01
-0:13
35K
21.75 mi15:16:003:54:5810:489:12
12:18
+0:17
23M
23.00 mi15:30:124:09:1010:5014:12
11:20
-0:58
24M
24.00 mi15:41:214:20:1910:5111:09
11:09
-0:11
40K
24.85 mi15:51:254:30:2310:5310:04
11:46
+0:37
25.2M
25.20 mi15:55:544:34:5210:544:29
13:00
+1:14
Finish
26.22 mi16:06:234:45:2110:5310:29
10:17
-2:43

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

9:54 /mi

Average Pace

10:53 /mi

Slowest Pace

13:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:23

51% of race

Time at Steady Pace

1:28:34

31% of race

Time at Slower Pace

52:24

18% of race

Average Pace: 10:53 /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 mi11:52:4731:4510:1331:45
10:13
#26099
10K
6.21 mi12:24:001:02:5810:0831:13
10:03
#25726
15K
9.32 mi12:54:461:33:4410:0330:46
9:54
#25433
20K
12.43 mi13:27:442:06:4210:1232:58
10:37
#25424
Half
13.11 mi13:34:562:13:5410:137:12
10:33
#25437
25K
15.53 mi14:03:042:42:0210:2628:08
11:36
#25578
30K
18.64 mi14:38:093:17:0710:3435:05
11:18
#25366
20M
20.00 mi14:54:473:33:4510:4116:38
12:14
#25398
21M
21.00 mi15:06:483:45:4610:4512:01
12:01
#25311
35K
21.75 mi15:16:003:54:5810:489:12
12:18
#25344
23M
23.00 mi15:30:124:09:1010:5014:12
11:20
#25287
24M
24.00 mi15:41:214:20:1910:5111:09
11:09
#25242
40K
24.85 mi15:51:254:30:2310:5310:04
11:46
#25234
25.2M
25.20 mi15:55:544:34:5210:544:29
13:00
#25234
Finish
26.22 mi16:06:234:45:2110:5310:29
10:17
#25209
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26099108121081224779(Top 87%)10097(Top 83%)10097(Top 185%)
10K6.21 mi3.10 mi25726+37310617+19510617+19525410(Top 89%)10465(Top 86%)10465(Top 191%)
15K9.32 mi3.11 mi25433+29310460+15710460+15724779(Top 87%)10097(Top 83%)10097(Top 185%)
20K12.43 mi3.11 mi25424+910471-1110471-1125372(Top 89%)10466(Top 86%)10466(Top 191%)
Half13.11 mi0.68 mi25437-1310478-710478-725857(Top 91%)10745(Top 88%)10745(Top 196%)
25K15.53 mi2.42 mi25578-14110560-8210560-8225973(Top 91%)10850(Top 89%)10850(Top 198%)
30K18.64 mi3.11 mi25366+21210485+7510485+7524533(Top 86%)10149(Top 83%)10149(Top 186%)
20M20.00 mi1.36 mi25398-3210514-2910514-2925580(Top 90%)10792(Top 88%)10792(Top 197%)
21M21.00 mi1.00 mi25311+8710477+3710477+3723604(Top 83%)9818(Top 80%)9818(Top 180%)
35K21.75 mi0.75 mi25344-3310514-3710514-3726232(Top 92%)11207(Top 92%)11207(Top 205%)
23M23.00 mi1.25 mi25287+5710486+2810486+2823958(Top 84%)10083(Top 82%)10083(Top 184%)
24M24.00 mi1.00 mi25242+4510475+1110475+1124275(Top 85%)10260(Top 84%)10260(Top 188%)
40K24.85 mi0.85 mi25234+810477-210477-224576(Top 87%)10465(Top 86%)10465(Top 191%)
25.2M25.20 mi0.35 mi2523410480-310480-325000(Top 88%)10686(Top 87%)10686(Top 195%)
Finish26.22 mi1.02 mi25209+2510476+410476+423739(Top 84%)10045(Top 82%)10045(Top 184%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

24779

Females

10097

F18-39

10097

5K→10K

3.1 - 6.2 mi

Top 89%
×5stories
+79ft-138ft

Overall

25410

Females

10465

F18-39

10465

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

24779

Females

10097

F18-39

10097

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

25372

Females

10466

F18-39

10466

20K→Half

12.4 - 13.1 mi

Top 91%
×2stories
+19ft-37ft

Overall

25857

Females

10745

F18-39

10745

Half→25K

13.1 - 15.5 mi

Top 91%
×4stories
+66ft-88ft

Overall

25973

Females

10850

F18-39

10850

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

24533

Females

10149

F18-39

10149

30K→20M

18.6 - 20.0 mi

Top 90%
×5stories
+64ft-50ft

Overall

25580

Females

10792

F18-39

10792

20M→21M

20.0 - 21.0 mi

Top 83%
×8stories
+106ft-24ft

Overall

23604

Females

9818

F18-39

9818

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

26232

Females

11207

F18-39

11207

35K→23M

21.8 - 23.0 mi

Top 84%
×5stories
+23ft-63ft

Overall

23958

Females

10083

F18-39

10083

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

24275

Females

10260

F18-39

10260

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

24576

Females

10465

F18-39

10465

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

25000

Females

10686

F18-39

10686

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

23739

Females

10045

F18-39

10045

Passing Analysis

Category:
Athletes Passed
1565
Passed By
675
Net Change
+890
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26099
5K → 10K42653+373#26099#25726
10K → 15K31421+293#25726#25433
15K → 20K132123+9#25433#25424
20K → Half2134-13#25424#25437
Half → 25K54195-141#25437#25578
25K → 30K24028+212#25578#25366
30K → 20M4274-32#25366#25398
20M → 21M9811+87#25398#25311
21M → 35K1851-33#25311#25344
35K → 23M7114+57#25344#25287
23M → 24M6419+45#25287#25242
24M → 40K3022+8#25242#25234
40K → 25.2M13130#25234#25234
25.2M → Finish4217+25#25234#25209
TOTALS1565675+890
📊

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