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BOSTON MARATHON 2025

Hayley Stillwell

Bib: 18746•F

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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 18%
Division (F18-39)
#0 / 5469
Top 32%
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
7:37/mi
23:39
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
47:03
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:10:08
↑ 67↓ 78
20K· 12.43 mi
7:23/mi
1:33:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:38:02
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:55:50
↑ 66↓ 880.2%
30K· 18.64 mi
7:37/mi
2:19:30
↑ 181↓ 1480.2%
20M
7:43/mi
2:29:59
↑ 64↓ 500.2%
21M
8:20/mi
2:38:19
↑ 106↓ 241.6%
35K· 21.75 mi
7:32/mi
2:43:57
↑ 17↓ 861.7%
23M
7:51/mi
2:53:47
↑ 23↓ 630.6%
24M
7:51/mi
3:01:38
↓ 821.3%
40K· 24.85 mi
8:07/mi
3:08:34
↓ 200.3%
25.2M
8:54/mi
3:11:38
↑ 13↓ 160.2%
Finish· 26.22 mi
7:48/mi
3:19:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:02
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:41:33
Pace7:45 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:1623:397:3723:39
7:37
-
10K
6.21 mi11:37:4047:037:3423:24
7:32
-0:05
15K
9.32 mi12:00:451:10:087:3123:05
7:26
-0:06
20K
12.43 mi12:23:411:33:047:2922:56
7:23
-0:03
Half
13.11 mi12:28:391:38:027:294:58
7:17
-0:06
25K
15.53 mi12:46:271:55:507:2717:48
7:20
+0:03
30K
18.64 mi13:10:072:19:307:2923:40
7:37
+0:17
20M
20.00 mi13:20:362:29:597:3010:29
7:43
+0:06
21M
21.00 mi13:28:562:38:197:328:20
8:20
+0:37
35K
21.75 mi13:34:342:43:577:325:38
7:32
-0:48
23M
23.00 mi13:44:242:53:477:339:50
7:51
+0:19
24M
24.00 mi13:52:153:01:387:347:51
7:51
0:00
40K
24.85 mi13:59:113:08:347:356:56
8:07
+0:16
25.2M
25.20 mi14:02:153:11:387:363:04
8:54
+0:47
Finish
26.22 mi14:10:123:19:357:377:57
7:48
-1:06

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

7:17 /mi

Average Pace

7:37 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:42

23% of race

Time at Steady Pace

1:57:52

59% of race

Time at Slower Pace

36:01

18% of race

Average Pace: 7:37 /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 mi11:14:1623:397:3723:39
7:37
#13224
10K
6.21 mi11:37:4047:037:3423:24
7:32
#12771
15K
9.32 mi12:00:451:10:087:3123:05
7:26
#12206
20K
12.43 mi12:23:411:33:047:2922:56
7:23
#11547
Half
13.11 mi12:28:391:38:027:294:58
7:17
#11460
25K
15.53 mi12:46:271:55:507:2717:48
7:20
#10954
30K
18.64 mi13:10:072:19:307:2923:40
7:37
#10436
20M
20.00 mi13:20:362:29:597:3010:29
7:43
#10246
21M
21.00 mi13:28:562:38:197:328:20
8:20
#10158
35K
21.75 mi13:34:342:43:577:325:38
7:32
#10075
23M
23.00 mi13:44:242:53:477:339:50
7:51
#9977
24M
24.00 mi13:52:153:01:387:347:51
7:51
#9964
40K
24.85 mi13:59:113:08:347:356:56
8:07
#9970
25.2M
25.20 mi14:02:153:11:387:363:04
8:54
#9965
Finish
26.22 mi14:10:123:19:357:377:57
7:48
#10022
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi132243447344711156(Top 39%)2448(Top 20%)2448(Top 45%)
10K6.21 mi3.10 mi12771+4533211+2363211+23612395(Top 44%)3028(Top 25%)3028(Top 55%)
15K9.32 mi3.11 mi12206+5652951+2602951+26011156(Top 39%)2448(Top 20%)2448(Top 45%)
20K12.43 mi3.11 mi11547+6592643+3082643+3089758(Top 34%)1856(Top 15%)1856(Top 34%)
Half13.11 mi0.68 mi11460+872586+572586+579902(Top 35%)1918(Top 16%)1918(Top 35%)
25K15.53 mi2.42 mi10954+5062365+2212365+2218700(Top 31%)1506(Top 12%)1506(Top 28%)
30K18.64 mi3.11 mi10436+5182172+1932172+1938605(Top 30%)1651(Top 14%)1651(Top 30%)
20M20.00 mi1.36 mi10246+1902114+582114+588484(Top 30%)1753(Top 14%)1753(Top 32%)
21M21.00 mi1.00 mi10158+882116-22116-29456(Top 33%)2352(Top 19%)2352(Top 43%)
35K21.75 mi0.75 mi10075+832106+102106+108880(Top 31%)2074(Top 17%)2074(Top 38%)
23M23.00 mi1.25 mi9977+982100+62100+68918(Top 31%)2228(Top 18%)2228(Top 41%)
24M24.00 mi1.00 mi9964+132125-252125-2510256(Top 36%)2951(Top 24%)2951(Top 54%)
40K24.85 mi0.85 mi9970-62161-362161-3610958(Top 39%)3375(Top 28%)3375(Top 62%)
25.2M25.20 mi0.35 mi9965+52173-122173-1211212(Top 39%)3586(Top 29%)3586(Top 66%)
Finish26.22 mi1.02 mi10022-572232-592232-5911463(Top 40%)3680(Top 30%)3680(Top 67%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11156

Females

2448

F18-39

2448

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

12395

Females

3028

F18-39

3028

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11156

Females

2448

F18-39

2448

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9758

Females

1856

F18-39

1856

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9902

Females

1918

F18-39

1918

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8700

Females

1506

F18-39

1506

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

8605

Females

1651

F18-39

1651

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8484

Females

1753

F18-39

1753

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

9456

Females

2352

F18-39

2352

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8880

Females

2074

F18-39

2074

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8918

Females

2228

F18-39

2228

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10256

Females

2951

F18-39

2951

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10958

Females

3375

F18-39

3375

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11212

Females

3586

F18-39

3586

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

11463

Females

3680

F18-39

3680

Passing Analysis

Category:
Athletes Passed
3846*
Passed By
641
Net Change
+3202
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13224
5K → 10K572119+453#13224#12771
10K → 15K59429+565#12771#12206
15K → 20K6656+659#12206#11547
20K → Half925+87#11547#11460
Half → 25K5115+506#11460#10954
25K → 30K53719+518#10954#10436
30K → 20M22030+190#10436#10246
20M → 21M14658+88#10246#10158
21M → 35K10522+83#10158#10075
35K → 23M147*49+98#10075#9977
23M → 24M8975+13#9977#9964
24M → 40K7378-6#9964#9970
40K → 25.2M3934+5#9970#9965
25.2M → Finish56112-57#9965#10022
TOTALS3846*641+3202

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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