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BOSTON MARATHON 2025

Melissa Sundermann

Bib: 23731•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
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
9:33/mi
29:39
↑ 97↓ 3451.5%
10K· 6.21 mi
9:35/mi
59:25
↑ 79↓ 1380.4%
15K· 9.32 mi
9:55/mi
1:30:15
↑ 67↓ 78
20K· 12.43 mi
9:16/mi
1:59:03
↑ 106↓ 860.1%
Half· 13.11 mi
9:17/mi
2:05:23
↑ 19↓ 370.5%
25K· 15.53 mi
9:27/mi
2:28:17
↑ 66↓ 880.2%
30K· 18.64 mi
9:46/mi
2:58:39
↑ 181↓ 1480.2%
20M
9:55/mi
3:12:07
↑ 64↓ 500.2%
21M
10:25/mi
3:22:32
↑ 106↓ 241.6%
35K· 21.75 mi
9:41/mi
3:29:47
↑ 17↓ 861.7%
23M
9:36/mi
3:41:49
↑ 23↓ 630.6%
24M
9:36/mi
3:51:25
↓ 821.3%
40K· 24.85 mi
9:39/mi
3:59:40
↓ 200.3%
25.2M
10:09/mi
4:03:10
↑ 13↓ 160.2%
Finish· 26.22 mi
9:04/mi
4:12:24
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:23
Pace9:34 /mi
2nd Half
Distance13.11 mi
Time2:07:01
Pace9:41 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:4329:399:3329:39
9:33
-
10K
6.21 mi11:58:2959:259:3429:46
9:35
+0:02
15K
9.32 mi12:29:191:30:159:4130:50
9:55
+0:20
20K
12.43 mi12:58:071:59:039:3528:48
9:16
-0:39
Half
13.11 mi13:04:272:05:239:346:20
9:17
+0:01
25K
15.53 mi13:27:212:28:179:3322:54
9:27
+0:10
30K
18.64 mi13:57:432:58:399:3530:22
9:46
+0:19
20M
20.00 mi14:11:113:12:079:3613:28
9:55
+0:09
21M
21.00 mi14:21:363:22:329:3910:25
10:25
+0:30
35K
21.75 mi14:28:513:29:479:397:15
9:41
-0:44
23M
23.00 mi14:40:533:41:499:3912:02
9:36
-0:05
24M
24.00 mi14:50:293:51:259:399:36
9:36
0:00
40K
24.85 mi14:58:443:59:409:398:15
9:39
+0:03
25.2M
25.20 mi15:02:144:03:109:393:30
10:09
+0:30
Finish
26.22 mi15:11:284:12:249:389:14
9:04
-1:05

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

9:04 /mi

Average Pace

9:38 /mi

Slowest Pace

10:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:58:29

94% of race

Time at Steady Pace

13:55

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:38 /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 mi11:28:4329:399:3329:39
9:33
#24383
10K
6.21 mi11:58:2959:259:3429:46
9:35
#24352
15K
9.32 mi12:29:191:30:159:4130:50
9:55
#24540
20K
12.43 mi12:58:071:59:039:3528:48
9:16
#23949
Half
13.11 mi13:04:272:05:239:346:20
9:17
#23904
25K
15.53 mi13:27:212:28:179:3322:54
9:27
#23548
30K
18.64 mi13:57:432:58:399:3530:22
9:46
#23049
20M
20.00 mi14:11:113:12:079:3613:28
9:55
#22868
21M
21.00 mi14:21:363:22:329:3910:25
10:25
#22708
35K
21.75 mi14:28:513:29:479:397:15
9:41
#22617
23M
23.00 mi14:40:533:41:499:3912:02
9:36
#22424
24M
24.00 mi14:50:293:51:259:399:36
9:36
#22315
40K
24.85 mi14:58:443:59:409:398:15
9:39
#22220
25.2M
25.20 mi15:02:144:03:109:393:30
10:09
#22158
Finish
26.22 mi15:11:284:12:249:389:14
9:04
#22042
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi243839893989324848(Top 87%)10137(Top 83%)10137(Top 1020%)
10K6.21 mi3.10 mi24352+319872+219872+2124312(Top 86%)9868(Top 81%)9868(Top 993%)
15K9.32 mi3.11 mi24540-1889979-1079979-10724848(Top 87%)10137(Top 83%)10137(Top 1020%)
20K12.43 mi3.11 mi23949+5919666+3139666+31322190(Top 78%)8695(Top 71%)8695(Top 875%)
Half13.11 mi0.68 mi23904+459644+229644+2222920(Top 81%)9098(Top 74%)9098(Top 915%)
25K15.53 mi2.42 mi23548+3569448+1969448+19621696(Top 76%)8482(Top 69%)8482(Top 853%)
30K18.64 mi3.11 mi23049+4999216+2329216+23220916(Top 74%)8186(Top 67%)8186(Top 824%)
20M20.00 mi1.36 mi22868+1819141+759141+7520653(Top 73%)8172(Top 67%)8172(Top 822%)
21M21.00 mi1.00 mi22708+1609063+789063+7819775(Top 70%)7784(Top 64%)7784(Top 783%)
35K21.75 mi0.75 mi22617+919029+349029+3421009(Top 74%)8513(Top 70%)8513(Top 856%)
23M23.00 mi1.25 mi22424+1938955+748955+7419095(Top 67%)7567(Top 62%)7567(Top 761%)
24M24.00 mi1.00 mi22315+1098915+408915+4020027(Top 71%)8109(Top 66%)8109(Top 816%)
40K24.85 mi0.85 mi22220+958871+448871+4419303(Top 68%)7794(Top 64%)7794(Top 784%)
25.2M25.20 mi0.35 mi22158+628853+188853+1817786(Top 63%)7038(Top 58%)7038(Top 708%)
Finish26.22 mi1.02 mi22042+1168803+508803+5019372(Top 68%)7804(Top 64%)7804(Top 785%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24848

Females

10137

F55-59

10137

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

24312

Females

9868

F55-59

9868

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24848

Females

10137

F55-59

10137

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

22190

Females

8695

F55-59

8695

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

22920

Females

9098

F55-59

9098

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21696

Females

8482

F55-59

8482

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

20916

Females

8186

F55-59

8186

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

20653

Females

8172

F55-59

8172

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

19775

Females

7784

F55-59

7784

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

21009

Females

8513

F55-59

8513

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

19095

Females

7567

F55-59

7567

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20027

Females

8109

F55-59

8109

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19303

Females

7794

F55-59

7794

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17786

Females

7038

F55-59

7038

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19372

Females

7804

F55-59

7804

Passing Analysis

Category:
Athletes Passed
2894
Passed By
553
Net Change
+2341
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24383
5K → 10K233202+31#24383#24352
10K → 15K78266-188#24352#24540
15K → 20K5932+591#24540#23949
20K → Half483+45#23949#23904
Half → 25K3615+356#23904#23548
25K → 30K51516+499#23548#23049
30K → 20M1898+181#23049#22868
20M → 21M1666+160#22868#22708
21M → 35K998+91#22708#22617
35K → 23M1963+193#22617#22424
23M → 24M12516+109#22424#22315
24M → 40K1049+95#22315#22220
40K → 25.2M631+62#22220#22158
25.2M → Finish1248+116#22158#22042
TOTALS2894553+2341
📊

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