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BOSTON MARATHON 2025

Colleen Masse

Bib: 21556•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
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
8:53/mi
27:36
↑ 97↓ 3451.5%
10K· 6.21 mi
9:06/mi
55:53
↑ 79↓ 1380.4%
15K· 9.32 mi
9:08/mi
1:24:15
↑ 67↓ 78
20K· 12.43 mi
9:09/mi
1:52:42
↑ 106↓ 860.1%
Half· 13.11 mi
9:01/mi
1:58:51
↑ 19↓ 370.5%
25K· 15.53 mi
9:23/mi
2:21:37
↑ 66↓ 880.2%
30K· 18.64 mi
9:49/mi
2:52:08
↑ 181↓ 1480.2%
20M
10:09/mi
3:05:55
↑ 64↓ 500.2%
21M
10:39/mi
3:16:34
↑ 106↓ 241.6%
35K· 21.75 mi
9:44/mi
3:23:51
↑ 17↓ 861.7%
23M
10:09/mi
3:36:34
↑ 23↓ 630.6%
24M
9:57/mi
3:46:31
↓ 821.3%
40K· 24.85 mi
10:27/mi
3:55:27
↓ 200.3%
25.2M
10:55/mi
3:59:13
↑ 13↓ 160.2%
Finish· 26.22 mi
9:38/mi
4:09:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:51
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:10:11
Pace9:56 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:1627:368:5327:36
8:53
-
10K
6.21 mi11:55:3355:539:0028:17
9:06
+0:13
15K
9.32 mi12:23:551:24:159:0228:22
9:08
+0:02
20K
12.43 mi12:52:221:52:429:0428:27
9:09
+0:01
Half
13.11 mi12:58:311:58:519:046:09
9:01
-0:08
25K
15.53 mi13:21:172:21:379:0722:46
9:23
+0:22
30K
18.64 mi13:51:482:52:089:1430:31
9:49
+0:26
20M
20.00 mi14:05:353:05:559:1813:47
10:09
+0:20
21M
21.00 mi14:16:143:16:349:2210:39
10:39
+0:30
35K
21.75 mi14:23:313:23:519:227:17
9:44
-0:55
23M
23.00 mi14:36:143:36:349:2512:43
10:09
+0:25
24M
24.00 mi14:46:113:46:319:269:57
9:57
-0:12
40K
24.85 mi14:55:073:55:279:288:56
10:27
+0:30
25.2M
25.20 mi14:58:533:59:139:303:46
10:55
+0:28
Finish
26.22 mi15:08:424:09:029:309:49
9:38
-1:17

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

8:53 /mi

Average Pace

9:30 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:37

57% of race

Time at Steady Pace

57:34

23% of race

Time at Slower Pace

49:51

20% of race

Average Pace: 9:30 /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 mi11:27:1627:368:5327:36
8:53
#21928
10K
6.21 mi11:55:3355:539:0028:17
9:06
#22400
15K
9.32 mi12:23:551:24:159:0228:22
9:08
#22442
20K
12.43 mi12:52:221:52:429:0428:27
9:09
#22237
Half
13.11 mi12:58:311:58:519:046:09
9:01
#22201
25K
15.53 mi13:21:172:21:379:0722:46
9:23
#22079
30K
18.64 mi13:51:482:52:089:1430:31
9:49
#21920
20M
20.00 mi14:05:353:05:559:1813:47
10:09
#21853
21M
21.00 mi14:16:143:16:349:2210:39
10:39
#21759
35K
21.75 mi14:23:313:23:519:227:17
9:44
#21739
23M
23.00 mi14:36:143:36:349:2512:43
10:09
#21667
24M
24.00 mi14:46:113:46:319:269:57
9:57
#21652
40K
24.85 mi14:55:073:55:279:288:56
10:27
#21653
25.2M
25.20 mi14:58:533:59:139:303:46
10:55
#21622
Finish
26.22 mi15:08:424:09:029:309:49
9:38
#21614
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi219288588858822595(Top 80%)8887(Top 73%)8887(Top 682%)
10K6.21 mi3.10 mi22400-4728834-2468834-24622842(Top 80%)9040(Top 74%)9040(Top 694%)
15K9.32 mi3.11 mi22442-428829+58829+522595(Top 80%)8887(Top 73%)8887(Top 682%)
20K12.43 mi3.11 mi22237+2058723+1068723+10621724(Top 76%)8444(Top 69%)8444(Top 648%)
Half13.11 mi0.68 mi22201+368709+148709+1421916(Top 77%)8552(Top 70%)8552(Top 656%)
25K15.53 mi2.42 mi22079+1228649+608649+6021520(Top 76%)8373(Top 68%)8373(Top 643%)
30K18.64 mi3.11 mi21920+1598579+708579+7021066(Top 74%)8267(Top 68%)8267(Top 634%)
20M20.00 mi1.36 mi21853+678554+258554+2521423(Top 75%)8590(Top 70%)8590(Top 659%)
21M21.00 mi1.00 mi21759+948530+248530+2420468(Top 72%)8168(Top 67%)8168(Top 627%)
35K21.75 mi0.75 mi21739+208532-28532-221142(Top 74%)8584(Top 70%)8584(Top 659%)
23M23.00 mi1.25 mi21667+728529+38529+320998(Top 74%)8555(Top 70%)8555(Top 657%)
24M24.00 mi1.00 mi21652+158546-178546-1721224(Top 75%)8717(Top 71%)8717(Top 669%)
40K24.85 mi0.85 mi21653-18571-258571-2521786(Top 77%)9083(Top 74%)9083(Top 697%)
25.2M25.20 mi0.35 mi21622+318556+158556+1520434(Top 72%)8382(Top 69%)8382(Top 643%)
Finish26.22 mi1.02 mi21614+88566-108566-1021679(Top 76%)9003(Top 74%)9003(Top 691%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

22595

Females

8887

F50-54

8887

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

22842

Females

9040

F50-54

9040

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

22595

Females

8887

F50-54

8887

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

21724

Females

8444

F50-54

8444

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21916

Females

8552

F50-54

8552

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21520

Females

8373

F50-54

8373

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

21066

Females

8267

F50-54

8267

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

21423

Females

8590

F50-54

8590

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20468

Females

8168

F50-54

8168

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

21142

Females

8584

F50-54

8584

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

20998

Females

8555

F50-54

8555

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

21224

Females

8717

F50-54

8717

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21786

Females

9083

F50-54

9083

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20434

Females

8382

F50-54

8382

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21679

Females

9003

F50-54

9003

Passing Analysis

Category:
Athletes Passed
1699
Passed By
1385
Net Change
+314
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21928
5K → 10K106578-472#21928#22400
10K → 15K157199-42#22400#22442
15K → 20K28277+205#22442#22237
20K → Half5317+36#22237#22201
Half → 25K20886+122#22201#22079
25K → 30K273114+159#22079#21920
30K → 20M12053+67#21920#21853
20M → 21M13238+94#21853#21759
21M → 35K5030+20#21759#21739
35K → 23M11038+72#21739#21667
23M → 24M6146+15#21667#21652
24M → 40K5960-1#21652#21653
40K → 25.2M4110+31#21653#21622
25.2M → Finish4739+8#21622#21614
TOTALS16991385+314
📊

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