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BOSTON MARATHON 2025

Julianna Steilen

Bib: 16069•F

KS

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
27:15
Rank: #21363
Start → 5K
8:46/mi
27:15 split
10K· 6.21 mi
54:46
Rank: #21522 (-159)
5K → 10K
8:51/mi
27:31 split
15K· 9.32 mi
1:21:20
Rank: #20892 (+630)
10K → 15K
8:33/mi
26:34 split
20K· 12.43 mi
1:48:09
Rank: #20442 (+450)
15K → 20K
8:38/mi
26:49 split
Half· 13.11 mi
1:53:46
Rank: #20291 (+151)
20K → Half
8:14/mi
5:37 split
25K· 15.53 mi
2:15:02
Rank: #20027 (+264)
Half → 25K
8:46/mi
21:16 split
30K· 18.64 mi
2:43:45
Rank: #19786 (+241)
25K → 30K
9:15/mi
28:43 split
20M
2:57:40
Rank: #20003 (-217)
30K → 20M
10:14/mi
13:55 split
21M
3:07:54
Rank: #19941 (+62)
20M → 21M
10:14/mi
10:14 split
35K· 21.75 mi
3:14:56
Rank: #19942 (-1)
21M → 35K
9:24/mi
7:02 split
23M
3:27:02
Rank: #19926 (+16)
35K → 23M
9:40/mi
12:06 split
24M
3:36:36
Rank: #19929 (-3)
23M → 24M
9:34/mi
9:34 split
40K· 24.85 mi
3:45:09
Rank: #19971 (-42)
24M → 40K
10:00/mi
8:33 split
25.2M
3:49:08
Rank: #20022 (-51)
40K → 25.2M
11:33/mi
3:59 split
Finish· 26.22 mi
3:58:31
Rank: #20064 (-42)
25.2M → Finish
9:12/mi
9:23 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:46
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:04:45
Pace9:31 /mi
📊Positive Split: 9.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:01:2627:158:4627:15
8:46
-
10K
6.21 mi11:28:5754:468:4927:31
8:51
+0:05
15K
9.32 mi11:55:311:21:208:4426:34
8:33
-0:18
20K
12.43 mi12:22:201:48:098:4226:49
8:38
+0:05
Half
13.11 mi12:27:571:53:468:415:37
8:14
-0:24
25K
15.53 mi12:49:132:15:028:4221:16
8:46
+0:32
30K
18.64 mi13:17:562:43:458:4728:43
9:15
+0:29
20M
20.00 mi13:31:512:57:408:5313:55
10:14
+0:59
21M
21.00 mi13:42:053:07:548:5710:14
10:14
0:00
35K
21.75 mi13:49:073:14:568:587:02
9:24
-0:50
23M
23.00 mi14:01:133:27:029:0012:06
9:40
+0:16
24M
24.00 mi14:10:473:36:369:029:34
9:34
-0:06
40K
24.85 mi14:19:203:45:099:048:33
10:00
+0:26
25.2M
25.20 mi14:23:193:49:089:063:59
11:33
+1:33
Finish
26.22 mi14:32:423:58:319:069:23
9:12
-2:21

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

8:14 /mi

Average Pace

9:06 /mi

Slowest Pace

11:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:31

45% of race

Time at Steady Pace

1:22:13

34% of race

Time at Slower Pace

48:47

20% of race

Average Pace: 9:06 /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 mi11:01:2627:158:4627:15
8:46
#21363
10K
6.21 mi11:28:5754:468:4927:31
8:51
#21522
15K
9.32 mi11:55:311:21:208:4426:34
8:33
#20892
20K
12.43 mi12:22:201:48:098:4226:49
8:38
#20442
Half
13.11 mi12:27:571:53:468:415:37
8:14
#20291
25K
15.53 mi12:49:132:15:028:4221:16
8:46
#20027
30K
18.64 mi13:17:562:43:458:4728:43
9:15
#19786
20M
20.00 mi13:31:512:57:408:5313:55
10:14
#20003
21M
21.00 mi13:42:053:07:548:5710:14
10:14
#19941
35K
21.75 mi13:49:073:14:568:587:02
9:24
#19942
23M
23.00 mi14:01:133:27:029:0012:06
9:40
#19926
24M
24.00 mi14:10:473:36:369:029:34
9:34
#19929
40K
24.85 mi14:19:203:45:099:048:33
10:00
#19971
25.2M
25.20 mi14:23:193:49:089:063:59
11:33
#20022
Finish
26.22 mi14:32:423:58:319:069:23
9:12
#20064
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi213638275827519647(Top 69%)7248(Top 59%)7248(Top 133%)
10K6.21 mi3.10 mi21522-1598351-768351-7621681(Top 76%)8409(Top 69%)8409(Top 154%)
15K9.32 mi3.11 mi20892+6307984+3677984+36719647(Top 69%)7248(Top 59%)7248(Top 133%)
20K12.43 mi3.11 mi20442+4507727+2577727+25719039(Top 67%)6944(Top 57%)6944(Top 127%)
Half13.11 mi0.68 mi20291+1517648+797648+7917578(Top 62%)6104(Top 50%)6104(Top 112%)
25K15.53 mi2.42 mi20027+2647498+1507498+15018802(Top 66%)6873(Top 56%)6873(Top 126%)
30K18.64 mi3.11 mi19786+2417400+987400+9818875(Top 66%)7055(Top 58%)7055(Top 129%)
20M20.00 mi1.36 mi20003-2177545-1457545-14521691(Top 76%)8727(Top 71%)8727(Top 160%)
21M21.00 mi1.00 mi19941+627539+67539+619156(Top 67%)7412(Top 61%)7412(Top 136%)
35K21.75 mi0.75 mi19942-17557-187557-1819973(Top 70%)7964(Top 65%)7964(Top 146%)
23M23.00 mi1.25 mi19926+167581-247581-2419340(Top 68%)7699(Top 63%)7699(Top 141%)
24M24.00 mi1.00 mi19929-37607-267607-2619872(Top 70%)8016(Top 66%)8016(Top 147%)
40K24.85 mi0.85 mi19971-427642-357642-3520468(Top 72%)8388(Top 69%)8388(Top 153%)
25.2M25.20 mi0.35 mi20022-517681-397681-3922194(Top 78%)9244(Top 76%)9244(Top 169%)
Finish26.22 mi1.02 mi20064-427715-347715-3419998(Top 70%)8146(Top 67%)8146(Top 149%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19647

Females

7248

F18-39

7248

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21681

Females

8409

F18-39

8409

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19647

Females

7248

F18-39

7248

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

19039

Females

6944

F18-39

6944

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17578

Females

6104

F18-39

6104

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18802

Females

6873

F18-39

6873

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18875

Females

7055

F18-39

7055

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

21691

Females

8727

F18-39

8727

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

19156

Females

7412

F18-39

7412

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

19973

Females

7964

F18-39

7964

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

19340

Females

7699

F18-39

7699

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

19872

Females

8016

F18-39

8016

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20468

Females

8388

F18-39

8388

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22194

Females

9244

F18-39

9244

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

19998

Females

8146

F18-39

8146

Passing Analysis

Category:
Athletes Passed
2626
Passed By
1327
Net Change
+1299
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21363
5K → 10K208367-159#21363#21522
10K → 15K64919+630#21522#20892
15K → 20K47121+450#20892#20442
20K → Half1521+151#20442#20291
Half → 25K30339+264#20291#20027
25K → 30K348107+241#20027#19786
30K → 20M51268-217#19786#20003
20M → 21M12462+62#20003#19941
21M → 35K5354-1#19941#19942
35K → 23M9579+16#19942#19926
23M → 24M6265-3#19926#19929
24M → 40K4789-42#19929#19971
40K → 25.2M1465-51#19971#20022
25.2M → Finish4991-42#20022#20064
TOTALS26261327+1299
📊

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