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BOSTON MARATHON 2025

Rachael Dempsey

Bib: 27565•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
10:13/mi
31:44
↑ 97↓ 3451.5%
10K· 6.21 mi
10:15/mi
1:03:35
↑ 79↓ 1380.4%
15K· 9.32 mi
10:16/mi
1:35:29
↑ 67↓ 78
20K· 12.43 mi
10:01/mi
2:06:37
↑ 106↓ 860.1%
Half· 13.11 mi
9:59/mi
2:13:26
↑ 19↓ 370.5%
25K· 15.53 mi
10:13/mi
2:38:12
↑ 66↓ 880.2%
30K· 18.64 mi
10:41/mi
3:11:22
↑ 181↓ 1480.2%
20M
10:58/mi
3:26:16
↑ 64↓ 500.2%
21M
11:26/mi
3:37:42
↑ 106↓ 241.6%
35K· 21.75 mi
9:33/mi
3:44:51
↑ 17↓ 861.7%
23M
10:13/mi
3:57:38
↑ 23↓ 630.6%
24M
9:42/mi
4:07:20
↓ 821.3%
40K· 24.85 mi
9:42/mi
4:15:38
↓ 200.3%
25.2M
10:29/mi
4:19:15
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
4:27:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:13:26
Pace10:11 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:14:29
Pace10:16 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:2231:4410:1331:44
10:13
-
10K
6.21 mi12:26:131:03:3510:1431:51
10:15
+0:02
15K
9.32 mi12:58:071:35:2910:1531:54
10:16
+0:01
20K
12.43 mi13:29:152:06:3710:1131:08
10:01
-0:15
Half
13.11 mi13:36:042:13:2610:116:49
9:59
-0:02
25K
15.53 mi14:00:502:38:1210:1124:46
10:13
+0:14
30K
18.64 mi14:34:003:11:2210:1633:10
10:41
+0:28
20M
20.00 mi14:48:543:26:1610:1914:54
10:58
+0:17
21M
21.00 mi15:00:203:37:4210:2211:26
11:26
+0:28
35K
21.75 mi15:07:293:44:5110:207:09
9:33
-1:53
23M
23.00 mi15:20:163:57:3810:2012:47
10:13
+0:40
24M
24.00 mi15:29:584:07:2010:189:42
9:42
-0:31
40K
24.85 mi15:38:164:15:3810:178:18
9:42
0:00
25.2M
25.20 mi15:41:534:19:1510:173:37
10:29
+0:47
Finish
26.22 mi15:50:334:27:5510:148:40
8:30
-1:59

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

8:30 /mi

Average Pace

10:14 /mi

Slowest Pace

11:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

33:49

13% of race

Time at Steady Pace

2:54:36

65% of race

Time at Slower Pace

59:30

22% of race

Average Pace: 10:13 /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 mi11:54:2231:4410:1331:44
10:13
#26098
10K
6.21 mi12:26:131:03:3510:1431:51
10:15
#25976
15K
9.32 mi12:58:071:35:2910:1531:54
10:16
#25811
20K
12.43 mi13:29:152:06:3710:1131:08
10:01
#25415
Half
13.11 mi13:36:042:13:2610:116:49
9:59
#25372
25K
15.53 mi14:00:502:38:1210:1124:46
10:13
#25089
30K
18.64 mi14:34:003:11:2210:1633:10
10:41
#24807
20M
20.00 mi14:48:543:26:1610:1914:54
10:58
#24712
21M
21.00 mi15:00:203:37:4210:2211:26
11:26
#24607
35K
21.75 mi15:07:293:44:5110:207:09
9:33
#24500
23M
23.00 mi15:20:163:57:3810:2012:47
10:13
#24322
24M
24.00 mi15:29:584:07:2010:189:42
9:42
#24185
40K
24.85 mi15:38:164:15:3810:178:18
9:42
#24043
25.2M
25.20 mi15:41:534:19:1510:173:37
10:29
#23987
Finish
26.22 mi15:50:334:27:5510:148:40
8:30
#23804
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26098108111081125536(Top 90%)10524(Top 86%)10524(Top 192%)
10K6.21 mi3.10 mi25976+12210763+4810763+4825834(Top 91%)10702(Top 88%)10702(Top 196%)
15K9.32 mi3.11 mi25811+16510676+8710676+8725536(Top 90%)10524(Top 86%)10524(Top 192%)
20K12.43 mi3.11 mi25415+39610466+21010466+21024268(Top 85%)9863(Top 81%)9863(Top 180%)
Half13.11 mi0.68 mi25372+4310441+2510441+2524826(Top 87%)10176(Top 83%)10176(Top 186%)
25K15.53 mi2.42 mi25089+28310302+13910302+13923759(Top 84%)9620(Top 79%)9620(Top 176%)
30K18.64 mi3.11 mi24807+28210176+12610176+12623340(Top 82%)9519(Top 78%)9519(Top 174%)
20M20.00 mi1.36 mi24712+9510133+4310133+4323521(Top 83%)9695(Top 79%)9695(Top 177%)
21M21.00 mi1.00 mi24607+10510090+4310090+4322497(Top 79%)9241(Top 76%)9241(Top 169%)
35K21.75 mi0.75 mi24500+10710043+4710043+4720569(Top 72%)8287(Top 68%)8287(Top 152%)
23M23.00 mi1.25 mi24322+1789960+839960+8321175(Top 75%)8649(Top 71%)8649(Top 158%)
24M24.00 mi1.00 mi24185+1379915+459915+4520420(Top 72%)8312(Top 68%)8312(Top 152%)
40K24.85 mi0.85 mi24043+1429847+689847+6819537(Top 69%)7920(Top 65%)7920(Top 145%)
25.2M25.20 mi0.35 mi23987+569820+279820+2719049(Top 67%)7688(Top 63%)7688(Top 141%)
Finish26.22 mi1.02 mi23804+1839740+809740+8016304(Top 57%)6208(Top 51%)6208(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

25536

Females

10524

F18-39

10524

5K→10K

3.1 - 6.2 mi

Top 91%
×5story building
+79ft-138ft

Overall

25834

Females

10702

F18-39

10702

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

25536

Females

10524

F18-39

10524

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

24268

Females

9863

F18-39

9863

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

24826

Females

10176

F18-39

10176

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23759

Females

9620

F18-39

9620

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23340

Females

9519

F18-39

9519

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

23521

Females

9695

F18-39

9695

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22497

Females

9241

F18-39

9241

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

20569

Females

8287

F18-39

8287

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21175

Females

8649

F18-39

8649

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20420

Females

8312

F18-39

8312

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19537

Females

7920

F18-39

7920

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

19049

Females

7688

F18-39

7688

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

16304

Females

6208

F18-39

6208

Passing Analysis

Category:
Athletes Passed
2533
Passed By
239
Net Change
+2294
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26098
5K → 10K242120+122#26098#25976
10K → 15K21146+165#25976#25811
15K → 20K3993+396#25811#25415
20K → Half463+43#25415#25372
Half → 25K2896+283#25372#25089
25K → 30K30321+282#25089#24807
30K → 20M10914+95#24807#24712
20M → 21M11712+105#24712#24607
21M → 35K1092+107#24607#24500
35K → 23M1835+178#24500#24322
23M → 24M1403+137#24322#24185
24M → 40K1420+142#24185#24043
40K → 25.2M582+56#24043#23987
25.2M → Finish1852+183#23987#23804
TOTALS2533239+2294
📊

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