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BOSTON MARATHON 2025

Kelly Marshall

Bib: 22351•F

SD

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
8:21/mi
25:58
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
52:29
↑ 79↓ 1380.4%
15K· 9.32 mi
9:09/mi
1:20:56
↑ 67↓ 78
20K· 12.43 mi
9:42/mi
1:51:03
↑ 106↓ 860.1%
Half· 13.11 mi
9:20/mi
1:57:25
↑ 19↓ 370.5%
25K· 15.53 mi
9:58/mi
2:21:35
↑ 66↓ 880.2%
30K· 18.64 mi
10:26/mi
2:54:01
↑ 181↓ 1480.2%
20M
9:55/mi
3:07:30
↑ 64↓ 500.2%
21M
10:38/mi
3:18:08
↑ 106↓ 241.6%
35K· 21.75 mi
9:47/mi
3:25:27
↑ 17↓ 861.7%
23M
10:27/mi
3:38:32
↑ 23↓ 630.6%
24M
10:32/mi
3:49:04
↓ 821.3%
40K· 24.85 mi
10:05/mi
3:57:41
↓ 200.3%
25.2M
10:41/mi
4:01:22
↑ 13↓ 160.2%
Finish· 26.22 mi
9:18/mi
4:10:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:25
Pace8:57 /mi
2nd Half
Distance13.11 mi
Time2:13:26
Pace10:11 /mi
📊Positive Split: 13.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4525:588:2125:58
8:21
-
10K
6.21 mi11:48:1652:298:2726:31
8:32
+0:11
15K
9.32 mi12:16:431:20:568:4128:27
9:09
+0:37
20K
12.43 mi12:46:501:51:038:5630:07
9:42
+0:33
Half
13.11 mi12:53:121:57:258:576:22
9:20
-0:22
25K
15.53 mi13:17:222:21:359:0724:10
9:58
+0:38
30K
18.64 mi13:49:482:54:019:2032:26
10:26
+0:28
20M
20.00 mi14:03:173:07:309:2213:29
9:55
-0:31
21M
21.00 mi14:13:553:18:089:2610:38
10:38
+0:43
35K
21.75 mi14:21:143:25:279:277:19
9:47
-0:51
23M
23.00 mi14:34:193:38:329:3013:05
10:27
+0:40
24M
24.00 mi14:44:513:49:049:3310:32
10:32
+0:05
40K
24.85 mi14:53:283:57:419:348:37
10:05
-0:27
25.2M
25.20 mi14:57:094:01:229:353:41
10:41
+0:36
Finish
26.22 mi15:06:384:10:519:349:29
9:18
-1:23

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

8:21 /mi

Average Pace

9:34 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:47

39% of race

Time at Steady Pace

1:23:42

33% of race

Time at Slower Pace

1:10:22

28% of race

Average Pace: 9:34 /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 mi11:21:4525:588:2125:58
8:21
#19069
10K
6.21 mi11:48:1652:298:2726:31
8:32
#19526
15K
9.32 mi12:16:431:20:568:4128:27
9:09
#20667
20K
12.43 mi12:46:501:51:038:5630:07
9:42
#21647
Half
13.11 mi12:53:121:57:258:576:22
9:20
#21726
25K
15.53 mi13:17:222:21:359:0724:10
9:58
#22066
30K
18.64 mi13:49:482:54:019:2032:26
10:26
#22289
20M
20.00 mi14:03:173:07:309:2213:29
9:55
#22168
21M
21.00 mi14:13:553:18:089:2610:38
10:38
#22033
35K
21.75 mi14:21:143:25:279:277:19
9:47
#21994
23M
23.00 mi14:34:193:38:329:3013:05
10:27
#21957
24M
24.00 mi14:44:513:49:049:3310:32
10:32
#22004
40K
24.85 mi14:53:283:57:419:348:37
10:05
#21941
25.2M
25.20 mi14:57:094:01:229:353:41
10:41
#21904
Finish
26.22 mi15:06:384:10:519:349:29
9:18
#21840
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi190696951695122707(Top 80%)8947(Top 73%)8947(Top 493%)
10K6.21 mi3.10 mi19526-4577199-2487199-24820016(Top 70%)7476(Top 61%)7476(Top 412%)
15K9.32 mi3.11 mi20667-11417848-6497848-64922707(Top 80%)8947(Top 73%)8947(Top 493%)
20K12.43 mi3.11 mi21647-9808407-5598407-55923466(Top 83%)9402(Top 77%)9402(Top 519%)
Half13.11 mi0.68 mi21726-798453-468453-4623076(Top 81%)9189(Top 75%)9189(Top 507%)
25K15.53 mi2.42 mi22066-3408641-1888641-18823178(Top 82%)9289(Top 76%)9289(Top 512%)
30K18.64 mi3.11 mi22289-2238790-1498790-14922796(Top 80%)9210(Top 75%)9210(Top 508%)
20M20.00 mi1.36 mi22168+1218733+578733+5720691(Top 73%)8186(Top 67%)8186(Top 452%)
21M21.00 mi1.00 mi22033+1358683+508683+5020415(Top 72%)8139(Top 67%)8139(Top 449%)
35K21.75 mi0.75 mi21994+398677+68677+621292(Top 75%)8666(Top 71%)8666(Top 478%)
23M23.00 mi1.25 mi21957+378691-148691-1421887(Top 77%)9007(Top 74%)9007(Top 497%)
24M24.00 mi1.00 mi22004-478740-498740-4922923(Top 81%)9595(Top 78%)9595(Top 529%)
40K24.85 mi0.85 mi21941+638723+178723+1720731(Top 73%)8527(Top 70%)8527(Top 470%)
25.2M25.20 mi0.35 mi21904+378713+108713+1019718(Top 69%)8029(Top 66%)8029(Top 443%)
Finish26.22 mi1.02 mi21840+648696+178696+1720427(Top 72%)8359(Top 68%)8359(Top 461%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

22707

Females

8947

F45-49

8947

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

20016

Females

7476

F45-49

7476

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

22707

Females

8947

F45-49

8947

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

23466

Females

9402

F45-49

9402

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

23076

Females

9189

F45-49

9189

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

23178

Females

9289

F45-49

9289

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

22796

Females

9210

F45-49

9210

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

20691

Females

8186

F45-49

8186

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20415

Females

8139

F45-49

8139

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21292

Females

8666

F45-49

8666

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21887

Females

9007

F45-49

9007

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

22923

Females

9595

F45-49

9595

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20731

Females

8527

F45-49

8527

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19718

Females

8029

F45-49

8029

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

20427

Females

8359

F45-49

8359

Passing Analysis

Category:
Athletes Passed
1074
Passed By
3845
Net Change
-2771
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19069
5K → 10K102559-457#19069#19526
10K → 15K341175-1141#19526#20667
15K → 20K431023-980#20667#21647
20K → Half1392-79#21647#21726
Half → 25K60400-340#21726#22066
25K → 30K122345-223#22066#22289
30K → 20M14019+121#22289#22168
20M → 21M15318+135#22168#22033
21M → 35K6324+39#22033#21994
35K → 23M10265+37#21994#21957
23M → 24M3582-47#21957#22004
24M → 40K7714+63#22004#21941
40K → 25.2M458+37#21941#21904
25.2M → Finish8521+64#21904#21840
TOTALS10743845-2771
📊

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