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BOSTON MARATHON 2025

Sarah Mackay

Bib: 30001•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
9:56/mi
30:53
↑ 97↓ 3451.5%
10K· 6.21 mi
9:49/mi
1:01:22
↑ 79↓ 1380.4%
15K· 9.32 mi
10:28/mi
1:33:54
↑ 67↓ 78
20K· 12.43 mi
10:04/mi
2:05:09
↑ 106↓ 860.1%
Half· 13.11 mi
10:05/mi
2:12:02
↑ 19↓ 370.5%
25K· 15.53 mi
10:18/mi
2:37:01
↑ 66↓ 880.2%
30K· 18.64 mi
10:26/mi
3:09:27
↑ 181↓ 1480.2%
20M
10:31/mi
3:23:44
↑ 64↓ 500.2%
21M
10:48/mi
3:34:32
↑ 106↓ 241.6%
35K· 21.75 mi
10:06/mi
3:42:05
↑ 17↓ 861.7%
23M
10:34/mi
3:55:19
↑ 23↓ 630.6%
24M
10:12/mi
4:05:31
↓ 821.3%
40K· 24.85 mi
10:16/mi
4:14:18
↓ 200.3%
25.2M
11:01/mi
4:18:06
↑ 13↓ 160.2%
Finish· 26.22 mi
9:36/mi
4:27:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:02
Pace10:04 /mi
2nd Half
Distance13.11 mi
Time2:15:51
Pace10:22 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:2430:539:5630:53
9:56
-
10K
6.21 mi12:21:531:01:229:5330:29
9:49
-0:07
15K
9.32 mi12:54:251:33:5410:0432:32
10:28
+0:39
20K
12.43 mi13:25:402:05:0910:0431:15
10:04
-0:24
Half
13.11 mi13:32:332:12:0210:046:53
10:05
+0:01
25K
15.53 mi13:57:322:37:0110:0624:59
10:18
+0:13
30K
18.64 mi14:29:583:09:2710:1032:26
10:26
+0:08
20M
20.00 mi14:44:153:23:4410:1114:17
10:31
+0:05
21M
21.00 mi14:55:033:34:3210:1310:48
10:48
+0:17
35K
21.75 mi15:02:363:42:0510:137:33
10:06
-0:42
23M
23.00 mi15:15:503:55:1910:1413:14
10:34
+0:28
24M
24.00 mi15:26:024:05:3110:1410:12
10:12
-0:22
40K
24.85 mi15:34:494:14:1810:148:47
10:16
+0:04
25.2M
25.20 mi15:38:374:18:0610:153:48
11:01
+0:45
Finish
26.22 mi15:48:244:27:5310:139:47
9:36
-1:25

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

9:36 /mi

Average Pace

10:13 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:00:03

90% of race

Time at Steady Pace

27:50

10% of race

Time at Slower Pace

0:00

0% 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 mi11:51:2430:539:5630:53
9:56
#25449
10K
6.21 mi12:21:531:01:229:5330:29
9:49
#25130
15K
9.32 mi12:54:251:33:5410:0432:32
10:28
#25474
20K
12.43 mi13:25:402:05:0910:0431:15
10:04
#25174
Half
13.11 mi13:32:332:12:0210:046:53
10:05
#25169
25K
15.53 mi13:57:322:37:0110:0624:59
10:18
#24950
30K
18.64 mi14:29:583:09:2710:1032:26
10:26
#24583
20M
20.00 mi14:44:153:23:4410:1114:17
10:31
#24463
21M
21.00 mi14:55:033:34:3210:1310:48
10:48
#24270
35K
21.75 mi15:02:363:42:0510:137:33
10:06
#24201
23M
23.00 mi15:15:503:55:1910:1413:14
10:34
#24071
24M
24.00 mi15:26:024:05:3110:1410:12
10:12
#23991
40K
24.85 mi15:34:494:14:1810:148:47
10:16
#23896
25.2M
25.20 mi15:38:374:18:0610:153:48
11:01
#23855
Finish
26.22 mi15:48:244:27:5310:139:47
9:36
#23801
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25449104501045025880(Top 91%)10725(Top 88%)10725(Top 196%)
10K6.21 mi3.10 mi25130+31910295+15510295+15524883(Top 88%)10170(Top 83%)10170(Top 186%)
15K9.32 mi3.11 mi25474-34410482-18710482-18725880(Top 91%)10725(Top 88%)10725(Top 196%)
20K12.43 mi3.11 mi25174+30010328+15410328+15424362(Top 86%)9912(Top 81%)9912(Top 181%)
Half13.11 mi0.68 mi25169+510331-310331-325014(Top 88%)10261(Top 84%)10261(Top 188%)
25K15.53 mi2.42 mi24950+21910223+10810223+10823971(Top 84%)9723(Top 80%)9723(Top 178%)
30K18.64 mi3.11 mi24583+36710048+17510048+17522802(Top 80%)9216(Top 75%)9216(Top 169%)
20M20.00 mi1.36 mi24463+1209993+559993+5522470(Top 79%)9145(Top 75%)9145(Top 167%)
21M21.00 mi1.00 mi24270+1939913+809913+8020865(Top 73%)8389(Top 69%)8389(Top 153%)
35K21.75 mi0.75 mi24201+699882+319882+3122184(Top 78%)9135(Top 75%)9135(Top 167%)
23M23.00 mi1.25 mi24071+1309833+499833+4922196(Top 78%)9171(Top 75%)9171(Top 168%)
24M24.00 mi1.00 mi23991+809800+339800+3321963(Top 77%)9119(Top 75%)9119(Top 167%)
40K24.85 mi0.85 mi23896+959762+389762+3821323(Top 75%)8837(Top 72%)8837(Top 162%)
25.2M25.20 mi0.35 mi23855+419754+89754+820773(Top 73%)8557(Top 70%)8557(Top 156%)
Finish26.22 mi1.02 mi23801+549738+169738+1621578(Top 76%)8954(Top 73%)8954(Top 164%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

25880

Females

10725

F18-39

10725

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

24883

Females

10170

F18-39

10170

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

25880

Females

10725

F18-39

10725

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24362

Females

9912

F18-39

9912

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

25014

Females

10261

F18-39

10261

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

23971

Females

9723

F18-39

9723

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

22802

Females

9216

F18-39

9216

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

22470

Females

9145

F18-39

9145

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

20865

Females

8389

F18-39

8389

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

22184

Females

9135

F18-39

9135

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

22196

Females

9171

F18-39

9171

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21963

Females

9119

F18-39

9119

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21323

Females

8837

F18-39

8837

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

20773

Females

8557

F18-39

8557

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21578

Females

8954

F18-39

8954

Passing Analysis

Category:
Athletes Passed
2216
Passed By
568
Net Change
+1648
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25449
5K → 10K37455+319#25449#25130
10K → 15K44388-344#25130#25474
15K → 20K31818+300#25474#25174
20K → Half3025+5#25174#25169
Half → 25K23112+219#25169#24950
25K → 30K3714+367#24950#24583
30K → 20M1299+120#24583#24463
20M → 21M1941+193#24463#24270
21M → 35K767+69#24270#24201
35K → 23M14616+130#24201#24071
23M → 24M877+80#24071#23991
24M → 40K1005+95#23991#23896
40K → 25.2M454+41#23896#23855
25.2M → Finish7117+54#23855#23801
TOTALS2216568+1648
📊

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