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BOSTON MARATHON 2025

Elizabeth Bailey

Bib: 9603•F

IL

0:00
0:00
/ mi
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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
6:57/mi
21:35
↑ 97↓ 3451.5%
10K· 6.21 mi
6:55/mi
43:04
↑ 79↓ 1380.4%
15K· 9.32 mi
6:52/mi
1:04:25
↑ 67↓ 78
20K· 12.43 mi
6:57/mi
1:26:00
↑ 106↓ 860.1%
Half· 13.11 mi
7:02/mi
1:30:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
1:50:04
↑ 66↓ 880.2%
30K· 18.64 mi
8:26/mi
2:16:16
↑ 181↓ 1480.2%
20M
8:53/mi
2:28:20
↑ 64↓ 500.2%
21M
9:12/mi
2:37:32
↑ 106↓ 241.6%
35K· 21.75 mi
7:28/mi
2:43:07
↑ 17↓ 861.7%
23M
8:10/mi
2:53:21
↑ 23↓ 630.6%
24M
7:37/mi
3:00:58
↓ 821.3%
40K· 24.85 mi
7:55/mi
3:07:44
↓ 200.3%
25.2M
11:45/mi
3:11:47
↑ 13↓ 160.2%
Finish· 26.22 mi
7:25/mi
3:19:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:48
Pace6:56 /mi
2nd Half
Distance13.11 mi
Time1:48:32
Pace8:17 /mi
📊Positive Split: 19.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2221:356:5721:35
6:57
-
10K
6.21 mi11:10:5143:046:5621:29
6:55
-0:02
15K
9.32 mi11:32:121:04:256:5521:21
6:52
-0:03
20K
12.43 mi11:53:471:26:006:5521:35
6:57
+0:05
Half
13.11 mi11:58:351:30:486:564:48
7:02
+0:05
25K
15.53 mi12:17:511:50:047:0519:16
7:57
+0:55
30K
18.64 mi12:44:032:16:167:1926:12
8:26
+0:29
20M
20.00 mi12:56:072:28:207:2512:04
8:53
+0:27
21M
21.00 mi13:05:192:37:327:309:12
9:12
+0:19
35K
21.75 mi13:10:542:43:077:305:35
7:28
-1:44
23M
23.00 mi13:21:082:53:217:3210:14
8:10
+0:42
24M
24.00 mi13:28:453:00:587:327:37
7:37
-0:33
40K
24.85 mi13:35:313:07:447:336:46
7:55
+0:18
25.2M
25.20 mi13:39:343:11:477:374:03
11:45
+3:50
Finish
26.22 mi13:47:073:19:207:367:33
7:25
-4:20

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

6:52 /mi

Average Pace

7:36 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:00

43% of race

Time at Steady Pace

1:01:49

31% of race

Time at Slower Pace

51:31

26% of race

Average Pace: 7:36 /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 mi10:49:2221:356:5721:35
6:57
#7427
10K
6.21 mi11:10:5143:046:5621:29
6:55
#7386
15K
9.32 mi11:32:121:04:256:5521:21
6:52
#7174
20K
12.43 mi11:53:471:26:006:5521:35
6:57
#6991
Half
13.11 mi11:58:351:30:486:564:48
7:02
#7037
25K
15.53 mi12:17:511:50:047:0519:16
7:57
#7831
30K
18.64 mi12:44:032:16:167:1926:12
8:26
#8934
20M
20.00 mi12:56:072:28:207:2512:04
8:53
#9526
21M
21.00 mi13:05:192:37:327:309:12
9:12
#9813
35K
21.75 mi13:10:542:43:077:305:35
7:28
#9727
23M
23.00 mi13:21:082:53:217:3210:14
8:10
#9817
24M
24.00 mi13:28:453:00:587:327:37
7:37
#9731
40K
24.85 mi13:35:313:07:447:336:46
7:55
#9693
25.2M
25.20 mi13:39:343:11:477:374:03
11:45
#10030
Finish
26.22 mi13:47:073:19:207:367:33
7:25
#9944
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi74277987986777(Top 24%)679(Top 6%)679(Top 12%)
10K6.21 mi3.10 mi7386+41796+2796+27370(Top 26%)803(Top 7%)803(Top 15%)
15K9.32 mi3.11 mi7174+212741+55741+556777(Top 24%)679(Top 6%)679(Top 12%)
20K12.43 mi3.11 mi6991+183709+32709+326572(Top 23%)678(Top 6%)678(Top 12%)
Half13.11 mi0.68 mi7037-46725-16725-167916(Top 28%)1075(Top 9%)1075(Top 20%)
25K15.53 mi2.42 mi7831-794983-258983-25813481(Top 47%)3921(Top 32%)3921(Top 72%)
30K18.64 mi3.11 mi8934-11031486-5031486-50314351(Top 51%)4554(Top 37%)4554(Top 83%)
20M20.00 mi1.36 mi9526-5921787-3011787-30116107(Top 57%)5649(Top 46%)5649(Top 103%)
21M21.00 mi1.00 mi9813-2871938-1511938-15114633(Top 52%)4951(Top 40%)4951(Top 91%)
35K21.75 mi0.75 mi9727+861919+191919+198417(Top 30%)1858(Top 15%)1858(Top 34%)
23M23.00 mi1.25 mi9817-902017-982017-9811207(Top 39%)3324(Top 27%)3324(Top 61%)
24M24.00 mi1.00 mi9731+862012+52012+58563(Top 30%)2125(Top 17%)2125(Top 39%)
40K24.85 mi0.85 mi9693+382025-132025-139592(Top 34%)2717(Top 22%)2717(Top 50%)
25.2M25.20 mi0.35 mi10030-3372206-1812206-18122671(Top 80%)9489(Top 78%)9489(Top 174%)
Finish26.22 mi1.02 mi9944+862194+122194+128576(Top 30%)2323(Top 19%)2323(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21story building
+97ft-345ft

Overall

6777

Females

679

F18-39

679

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

7370

Females

803

F18-39

803

10K→15K

6.2 - 9.3 mi

Top 24%
×3story building
+67ft-78ft

Overall

6777

Females

679

F18-39

679

15K→20K

9.3 - 12.4 mi

Top 23%
×5story building
+106ft-86ft

Overall

6572

Females

678

F18-39

678

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

7916

Females

1075

F18-39

1075

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13481

Females

3921

F18-39

3921

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

14351

Females

4554

F18-39

4554

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16107

Females

5649

F18-39

5649

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14633

Females

4951

F18-39

4951

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8417

Females

1858

F18-39

1858

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11207

Females

3324

F18-39

3324

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8563

Females

2125

F18-39

2125

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9592

Females

2717

F18-39

2717

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22671

Females

9489

F18-39

9489

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8576

Females

2323

F18-39

2323

Passing Analysis

Category:
Athletes Passed
1369*
Passed By
3884
Net Change
-2517
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7427
5K → 10K220179+41#7427#7386
10K → 15K26149+212#7386#7174
15K → 20K25067+183#7174#6991
20K → Half1662-46#6991#7037
Half → 25K15809-794#7037#7831
25K → 30K441147-1103#7831#8934
30K → 20M22614-592#8934#9526
20M → 21M30317-287#9526#9813
21M → 35K10519+86#9813#9727
35K → 23M82172-90#9727#9817
23M → 24M12236+86#9817#9731
24M → 40K8749+38#9731#9693
40K → 25.2M2337-337#9693#10030
25.2M → Finish113*27+86#10030#9944
TOTALS1369*3884-2517

* 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