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BOSTON MARATHON 2025

Pamela Mcdonald

Bib: 18807•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 50%
Gender (Female)
#0 / 12228
Top 36%
Masters (Masters Women)
#0 / 6759
Top 21%
Division (F45-49)
#0 / 1813
Top 25%
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
7:57/mi
24:41
↑ 97↓ 3451.5%
10K· 6.21 mi
7:52/mi
49:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:48/mi
1:13:20
↑ 67↓ 78
20K· 12.43 mi
7:53/mi
1:37:51
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:43:11
↑ 19↓ 370.5%
25K· 15.53 mi
7:59/mi
2:02:32
↑ 66↓ 880.2%
30K· 18.64 mi
8:18/mi
2:28:19
↑ 181↓ 1480.2%
20M
8:34/mi
2:39:57
↑ 64↓ 500.2%
21M
8:59/mi
2:48:56
↑ 106↓ 241.6%
35K· 21.75 mi
8:00/mi
2:54:55
↑ 17↓ 861.7%
23M
8:28/mi
3:05:31
↑ 23↓ 630.6%
24M
8:12/mi
3:13:43
↓ 821.3%
40K· 24.85 mi
8:37/mi
3:21:05
↓ 200.3%
25.2M
9:28/mi
3:24:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:41/mi
3:33:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:11
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:50:01
Pace8:24 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2924:417:5724:41
7:57
-
10K
6.21 mi11:39:5549:077:5424:26
7:52
-0:05
15K
9.32 mi12:04:081:13:207:5224:13
7:48
-0:04
20K
12.43 mi12:28:391:37:517:5224:31
7:53
+0:05
Half
13.11 mi12:33:591:43:117:525:20
7:49
-0:04
25K
15.53 mi12:53:202:02:327:5319:21
7:59
+0:10
30K
18.64 mi13:19:072:28:197:5725:47
8:18
+0:19
20M
20.00 mi13:30:452:39:578:0011:38
8:34
+0:16
21M
21.00 mi13:39:442:48:568:038:59
8:59
+0:25
35K
21.75 mi13:45:432:54:558:035:59
8:00
-0:59
23M
23.00 mi13:56:193:05:318:0410:36
8:28
+0:28
24M
24.00 mi14:04:313:13:438:048:12
8:12
-0:16
40K
24.85 mi14:11:533:21:058:057:22
8:37
+0:25
25.2M
25.20 mi14:15:093:24:218:073:16
9:28
+0:51
Finish
26.22 mi14:24:003:33:128:088:51
8:41
-0:47

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

7:48 /mi

Average Pace

8:08 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:11

48% of race

Time at Steady Pace

59:19

28% of race

Time at Slower Pace

50:42

24% of race

Average Pace: 8:08 /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 mi11:15:2924:417:5724:41
7:57
#16155
10K
6.21 mi11:39:5549:077:5424:26
7:52
#15727
15K
9.32 mi12:04:081:13:207:5224:13
7:48
#15229
20K
12.43 mi12:28:391:37:517:5224:31
7:53
#14872
Half
13.11 mi12:33:591:43:117:525:20
7:49
#14842
25K
15.53 mi12:53:202:02:327:5319:21
7:59
#14621
30K
18.64 mi13:19:072:28:197:5725:47
8:18
#14343
20M
20.00 mi13:30:452:39:578:0011:38
8:34
#14301
21M
21.00 mi13:39:442:48:568:038:59
8:59
#14229
35K
21.75 mi13:45:432:54:558:035:59
8:00
#14129
23M
23.00 mi13:56:193:05:318:0410:36
8:28
#14071
24M
24.00 mi14:04:313:13:438:048:12
8:12
#13993
40K
24.85 mi14:11:533:21:058:057:22
8:37
#13966
25.2M
25.20 mi14:15:093:24:218:073:16
9:28
#13965
Finish
26.22 mi14:24:003:33:128:088:51
8:41
#14091
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi161555233523314345(Top 51%)4233(Top 35%)4233(Top 233%)
10K6.21 mi3.10 mi15727+4284974+2594974+25915401(Top 54%)4781(Top 39%)4781(Top 264%)
15K9.32 mi3.11 mi15229+4984692+2824692+28214345(Top 51%)4233(Top 35%)4233(Top 233%)
20K12.43 mi3.11 mi14872+3574518+1744518+17414021(Top 49%)4109(Top 34%)4109(Top 227%)
Half13.11 mi0.68 mi14842+304500+184500+1814463(Top 51%)4328(Top 35%)4328(Top 239%)
25K15.53 mi2.42 mi14621+2214406+944406+9413760(Top 48%)4086(Top 33%)4086(Top 225%)
30K18.64 mi3.11 mi14343+2784305+1014305+10113510(Top 48%)4111(Top 34%)4111(Top 227%)
20M20.00 mi1.36 mi14301+424303+24303+214182(Top 50%)4604(Top 38%)4604(Top 254%)
21M21.00 mi1.00 mi14229+724286+174286+1713416(Top 47%)4322(Top 35%)4322(Top 238%)
35K21.75 mi0.75 mi14129+1004259+274259+2712304(Top 43%)3811(Top 31%)3811(Top 210%)
23M23.00 mi1.25 mi14071+584263-44263-413125(Top 46%)4334(Top 35%)4334(Top 239%)
24M24.00 mi1.00 mi13993+784262+14262+112596(Top 44%)4107(Top 34%)4107(Top 227%)
40K24.85 mi0.85 mi13966+274269-74269-714167(Top 50%)5047(Top 41%)5047(Top 278%)
25.2M25.20 mi0.35 mi13965+14273-44273-414471(Top 51%)5260(Top 43%)5260(Top 290%)
Finish26.22 mi1.02 mi14091-1264368-954368-9517393(Top 61%)6749(Top 55%)6749(Top 372%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

14345

Females

4233

F45-49

4233

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

15401

Females

4781

F45-49

4781

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

14345

Females

4233

F45-49

4233

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

14021

Females

4109

F45-49

4109

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

14463

Females

4328

F45-49

4328

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

13760

Females

4086

F45-49

4086

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13510

Females

4111

F45-49

4111

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

14182

Females

4604

F45-49

4604

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

13416

Females

4322

F45-49

4322

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12304

Females

3811

F45-49

3811

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13125

Females

4334

F45-49

4334

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

12596

Females

4107

F45-49

4107

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14167

Females

5047

F45-49

5047

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14471

Females

5260

F45-49

5260

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

17393

Females

6749

F45-49

6749

Passing Analysis

Category:
Athletes Passed
3027
Passed By
963
Net Change
+2064
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16155
5K → 10K561133+428#16155#15727
10K → 15K52224+498#15727#15229
15K → 20K39841+357#15229#14872
20K → Half5323+30#14872#14842
Half → 25K28059+221#14842#14621
25K → 30K385107+278#14621#14343
30K → 20M13088+42#14343#14301
20M → 21M14977+72#14301#14229
21M → 35K12020+100#14229#14129
35K → 23M13779+58#14129#14071
23M → 24M12446+78#14071#13993
24M → 40K8861+27#13993#13966
40K → 25.2M4140+1#13966#13965
25.2M → Finish39165-126#13965#14091
TOTALS3027963+2064
📊

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