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BOSTON MARATHON 2025

Gillian Mccaffer

Bib: 23031•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 41%
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
8:25/mi
26:08
↑ 97↓ 3451.5%
10K· 6.21 mi
8:24/mi
52:13
↑ 79↓ 1380.4%
15K· 9.32 mi
8:30/mi
1:18:39
↑ 67↓ 78
20K· 12.43 mi
8:39/mi
1:45:32
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:51:21
↑ 19↓ 370.5%
25K· 15.53 mi
8:40/mi
2:12:22
↑ 66↓ 880.2%
30K· 18.64 mi
9:06/mi
2:40:37
↑ 181↓ 1480.2%
20M
9:09/mi
2:53:03
↑ 64↓ 500.2%
21M
9:16/mi
3:02:19
↑ 106↓ 241.6%
35K· 21.75 mi
8:23/mi
3:08:35
↑ 17↓ 861.7%
23M
8:30/mi
3:19:13
↑ 23↓ 630.6%
24M
8:22/mi
3:27:35
↓ 821.3%
40K· 24.85 mi
8:26/mi
3:34:48
↓ 200.3%
25.2M
9:25/mi
3:38:03
↑ 13↓ 160.2%
Finish· 26.22 mi
8:10/mi
3:46:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:21
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time1:55:01
Pace8:46 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:3526:088:2526:08
8:25
-
10K
6.21 mi11:49:4052:138:2426:05
8:24
-0:01
15K
9.32 mi12:16:061:18:398:2626:26
8:30
+0:06
20K
12.43 mi12:42:591:45:328:3026:53
8:39
+0:09
Half
13.11 mi12:48:481:51:218:305:49
8:32
-0:07
25K
15.53 mi13:09:492:12:228:3121:01
8:40
+0:08
30K
18.64 mi13:38:042:40:378:3728:15
9:06
+0:26
20M
20.00 mi13:50:302:53:038:3912:26
9:09
+0:03
21M
21.00 mi13:59:463:02:198:419:16
9:16
+0:07
35K
21.75 mi14:06:023:08:358:406:16
8:23
-0:53
23M
23.00 mi14:16:403:19:138:4010:38
8:30
+0:07
24M
24.00 mi14:25:023:27:358:398:22
8:22
-0:08
40K
24.85 mi14:32:153:34:488:397:13
8:26
+0:04
25.2M
25.20 mi14:35:303:38:038:393:15
9:25
+0:59
Finish
26.22 mi14:43:493:46:228:388:19
8:10
-1:15

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

8:10 /mi

Average Pace

8:38 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:10

76% of race

Time at Steady Pace

53:12

24% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:38 /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 mi11:23:3526:088:2526:08
8:25
#19384
10K
6.21 mi11:49:4052:138:2426:05
8:24
#19259
15K
9.32 mi12:16:061:18:398:2626:26
8:30
#19282
20K
12.43 mi12:42:591:45:328:3026:53
8:39
#19212
Half
13.11 mi12:48:481:51:218:305:49
8:32
#19224
25K
15.53 mi13:09:492:12:228:3121:01
8:40
#19038
30K
18.64 mi13:38:042:40:378:3728:15
9:06
#18851
20M
20.00 mi13:50:302:53:038:3912:26
9:09
#18735
21M
21.00 mi13:59:463:02:198:419:16
9:16
#18500
35K
21.75 mi14:06:023:08:358:406:16
8:23
#18367
23M
23.00 mi14:16:403:19:138:4010:38
8:30
#18048
24M
24.00 mi14:25:023:27:358:398:22
8:22
#17837
40K
24.85 mi14:32:153:34:488:397:13
8:26
#17654
25.2M
25.20 mi14:35:303:38:038:393:15
9:25
#17586
Finish
26.22 mi14:43:493:46:228:388:19
8:10
#17467
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi193847131713119377(Top 68%)7106(Top 58%)7106(Top 392%)
10K6.21 mi3.10 mi19259+1257043+887043+8819166(Top 67%)6981(Top 57%)6981(Top 385%)
15K9.32 mi3.11 mi19282-237047-47047-419377(Top 68%)7106(Top 58%)7106(Top 392%)
20K12.43 mi3.11 mi19212+707028+197028+1919166(Top 67%)6999(Top 57%)6999(Top 386%)
Half13.11 mi0.68 mi19224-127039-117039-1119381(Top 68%)7102(Top 58%)7102(Top 392%)
25K15.53 mi2.42 mi19038+1866940+996940+9918202(Top 64%)6533(Top 53%)6533(Top 360%)
30K18.64 mi3.11 mi18851+1876859+816859+8118157(Top 64%)6666(Top 55%)6666(Top 368%)
20M20.00 mi1.36 mi18735+1166822+376822+3717538(Top 62%)6435(Top 53%)6435(Top 355%)
21M21.00 mi1.00 mi18500+2356722+1006722+10015005(Top 53%)5188(Top 42%)5188(Top 286%)
35K21.75 mi0.75 mi18367+1336659+636659+6314782(Top 52%)5131(Top 42%)5131(Top 283%)
23M23.00 mi1.25 mi18048+3196518+1416518+14113306(Top 47%)4444(Top 36%)4444(Top 245%)
24M24.00 mi1.00 mi17837+2116444+746444+7413705(Top 48%)4679(Top 38%)4679(Top 258%)
40K24.85 mi0.85 mi17654+1836364+806364+8013102(Top 46%)4513(Top 37%)4513(Top 249%)
25.2M25.20 mi0.35 mi17586+686339+256339+2514262(Top 50%)5182(Top 42%)5182(Top 286%)
Finish26.22 mi1.02 mi17467+1196293+466293+4614058(Top 49%)4989(Top 41%)4989(Top 275%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

19377

Females

7106

F45-49

7106

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

19166

Females

6981

F45-49

6981

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

19377

Females

7106

F45-49

7106

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

19166

Females

6999

F45-49

6999

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19381

Females

7102

F45-49

7102

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

18202

Females

6533

F45-49

6533

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18157

Females

6666

F45-49

6666

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17538

Females

6435

F45-49

6435

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

15005

Females

5188

F45-49

5188

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14782

Females

5131

F45-49

5131

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

13306

Females

4444

F45-49

4444

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13705

Females

4679

F45-49

4679

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13102

Females

4513

F45-49

4513

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14262

Females

5182

F45-49

5182

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

14058

Females

4989

F45-49

4989

Passing Analysis

Category:
Athletes Passed
2827
Passed By
910
Net Change
+1917
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19384
5K → 10K326201+125#19384#19259
10K → 15K191214-23#19259#19282
15K → 20K223153+70#19282#19212
20K → Half3143-12#19212#19224
Half → 25K25670+186#19224#19038
25K → 30K323136+187#19038#18851
30K → 20M15640+116#18851#18735
20M → 21M25116+235#18735#18500
21M → 35K1429+133#18500#18367
35K → 23M3223+319#18367#18048
23M → 24M2176+211#18048#17837
24M → 40K1852+183#17837#17654
40K → 25.2M713+68#17654#17586
25.2M → Finish13314+119#17586#17467
TOTALS2827910+1917
📊

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