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BOSTON MARATHON 2025

Rachel Stern

Bib: 27913•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

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
9:42/mi
30:09
↑ 97↓ 3451.5%
10K· 6.21 mi
9:32/mi
59:46
↑ 79↓ 1380.4%
15K· 9.32 mi
9:32/mi
1:29:24
↑ 67↓ 78
20K· 12.43 mi
9:44/mi
1:59:39
↑ 106↓ 860.1%
Half· 13.11 mi
9:39/mi
2:06:14
↑ 19↓ 370.5%
25K· 15.53 mi
9:56/mi
2:30:20
↑ 66↓ 880.2%
30K· 18.64 mi
11:24/mi
3:05:44
↑ 181↓ 1480.2%
20M
11:51/mi
3:21:50
↑ 64↓ 500.2%
21M
12:18/mi
3:34:08
↑ 106↓ 241.6%
35K· 21.75 mi
11:26/mi
3:42:41
↑ 17↓ 861.7%
23M
12:20/mi
3:58:08
↑ 23↓ 630.6%
24M
12:57/mi
4:11:05
↓ 821.3%
40K· 24.85 mi
12:14/mi
4:21:33
↓ 200.3%
25.2M
13:00/mi
4:26:02
↑ 13↓ 160.2%
Finish· 26.22 mi
10:44/mi
4:36:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:14
Pace9:38 /mi
2nd Half
Distance13.11 mi
Time2:30:44
Pace11:30 /mi
📊Positive Split: 19.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:0430:099:4230:09
9:42
-
10K
6.21 mi12:17:4159:469:3729:37
9:32
-0:10
15K
9.32 mi12:47:191:29:249:3629:38
9:32
0:00
20K
12.43 mi13:17:341:59:399:3830:15
9:44
+0:12
Half
13.11 mi13:24:092:06:149:386:35
9:39
-0:05
25K
15.53 mi13:48:152:30:209:4124:06
9:56
+0:17
30K
18.64 mi14:23:393:05:449:5835:24
11:24
+1:28
20M
20.00 mi14:39:453:21:5010:0516:06
11:51
+0:27
21M
21.00 mi14:52:033:34:0810:1212:18
12:18
+0:27
35K
21.75 mi15:00:363:42:4110:148:33
11:26
-0:52
23M
23.00 mi15:16:033:58:0810:2115:27
12:20
+0:54
24M
24.00 mi15:29:004:11:0510:2812:57
12:57
+0:37
40K
24.85 mi15:39:284:21:3310:3110:28
12:14
-0:43
25.2M
25.20 mi15:43:574:26:0210:334:29
13:00
+0:46
Finish
26.22 mi15:54:534:36:5810:3410:56
10:44
-2:16

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

9:32 /mi

Average Pace

10:34 /mi

Slowest Pace

13:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:16

58% of race

Time at Steady Pace

1:00:03

22% of race

Time at Slower Pace

55:39

20% of race

Average Pace: 10:34 /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 mi11:48:0430:099:4230:09
9:42
#24863
10K
6.21 mi12:17:4159:469:3729:37
9:32
#24508
15K
9.32 mi12:47:191:29:249:3629:38
9:32
#24300
20K
12.43 mi13:17:341:59:399:3830:15
9:44
#24110
Half
13.11 mi13:24:092:06:149:386:35
9:39
#24093
25K
15.53 mi13:48:152:30:209:4124:06
9:56
#23926
30K
18.64 mi14:23:393:05:449:5835:24
11:24
#24145
20M
20.00 mi14:39:453:21:5010:0516:06
11:51
#24238
21M
21.00 mi14:52:033:34:0810:1212:18
12:18
#24218
35K
21.75 mi15:00:363:42:4110:148:33
11:26
#24259
23M
23.00 mi15:16:033:58:0810:2115:27
12:20
#24387
24M
24.00 mi15:29:004:11:0510:2812:57
12:57
#24545
40K
24.85 mi15:39:284:21:3310:3110:28
12:14
#24579
25.2M
25.20 mi15:43:574:26:0210:334:29
13:00
#24601
Finish
26.22 mi15:54:534:36:5810:3410:56
10:44
#24613
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24863101421014223854(Top 84%)9577(Top 78%)9577(Top 175%)
10K6.21 mi3.10 mi24508+3559956+1869956+18624199(Top 85%)9803(Top 80%)9803(Top 179%)
15K9.32 mi3.11 mi24300+2089841+1159841+11523854(Top 84%)9577(Top 78%)9577(Top 175%)
20K12.43 mi3.11 mi24110+1909754+879754+8723604(Top 83%)9485(Top 78%)9485(Top 173%)
Half13.11 mi0.68 mi24093+179746+89746+824002(Top 85%)9713(Top 79%)9713(Top 178%)
25K15.53 mi2.42 mi23926+1679657+899657+8923109(Top 81%)9260(Top 76%)9260(Top 169%)
30K18.64 mi3.11 mi24145-2199809-1529809-15224693(Top 87%)10233(Top 84%)10233(Top 187%)
20M20.00 mi1.36 mi24238-939878-699878-6925060(Top 88%)10509(Top 86%)10509(Top 192%)
21M21.00 mi1.00 mi24218+209884-69884-624103(Top 85%)10086(Top 82%)10086(Top 184%)
35K21.75 mi0.75 mi24259-419918-349918-3425002(Top 88%)10585(Top 87%)10585(Top 194%)
23M23.00 mi1.25 mi24387-1289998-809998-8025586(Top 90%)10903(Top 89%)10903(Top 199%)
24M24.00 mi1.00 mi24545-15810099-10110099-10126812(Top 94%)11540(Top 94%)11540(Top 211%)
40K24.85 mi0.85 mi24579-3410124-2510124-2525304(Top 89%)10818(Top 88%)10818(Top 198%)
25.2M25.20 mi0.35 mi24601-2210142-1810142-1825063(Top 88%)10718(Top 88%)10718(Top 196%)
Finish26.22 mi1.02 mi24613-1210159-1710159-1724808(Top 87%)10568(Top 86%)10568(Top 193%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

23854

Females

9577

F18-39

9577

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

24199

Females

9803

F18-39

9803

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

23854

Females

9577

F18-39

9577

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

23604

Females

9485

F18-39

9485

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24002

Females

9713

F18-39

9713

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

23109

Females

9260

F18-39

9260

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24693

Females

10233

F18-39

10233

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

25060

Females

10509

F18-39

10509

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

24103

Females

10086

F18-39

10086

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

25002

Females

10585

F18-39

10585

35K→23M

21.8 - 23.0 mi

Top 90%
×5story building
+23ft-63ft

Overall

25586

Females

10903

F18-39

10903

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

26812

Females

11540

F18-39

11540

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

25304

Females

10818

F18-39

10818

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

25063

Females

10718

F18-39

10718

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

24808

Females

10568

F18-39

10568

Passing Analysis

Category:
Athletes Passed
1483
Passed By
1233
Net Change
+250
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24863
5K → 10K42267+355#24863#24508
10K → 15K26557+208#24508#24300
15K → 20K23141+190#24300#24110
20K → Half3417+17#24110#24093
Half → 25K20942+167#24093#23926
25K → 30K82301-219#23926#24145
30K → 20M46139-93#24145#24238
20M → 21M7151+20#24238#24218
21M → 35K2263-41#24218#24259
35K → 23M28156-128#24259#24387
23M → 24M17175-158#24387#24545
24M → 40K1953-34#24545#24579
40K → 25.2M830-22#24579#24601
25.2M → Finish2941-12#24601#24613
TOTALS14831233+250
📊

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