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BOSTON MARATHON 2025

Deanna Szwarc

Bib: 17118•F

SC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 48%
Gender (Female)
#0 / 12228
Top 34%
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
7:54/mi
24:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
47:47
↑ 79↓ 1380.4%
15K· 9.32 mi
7:24/mi
1:10:46
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:37:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:42:25
↑ 19↓ 370.5%
25K· 15.53 mi
8:29/mi
2:03:00
↑ 66↓ 880.2%
30K· 18.64 mi
9:11/mi
2:31:32
↑ 181↓ 1480.2%
20M
8:48/mi
2:43:29
↑ 64↓ 500.2%
21M
8:30/mi
2:51:59
↑ 106↓ 241.6%
35K· 21.75 mi
8:01/mi
2:57:59
↑ 17↓ 861.7%
23M
8:01/mi
3:08:01
↑ 23↓ 630.6%
24M
7:21/mi
3:15:22
↓ 821.3%
40K· 24.85 mi
7:30/mi
3:21:47
↓ 200.3%
25.2M
8:07/mi
3:24:35
↑ 13↓ 160.2%
Finish· 26.22 mi
6:59/mi
3:31:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:25
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:49:17
Pace8:20 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0724:347:5424:34
7:54
-
10K
6.21 mi11:38:2047:477:4123:13
7:28
-0:26
15K
9.32 mi12:01:191:10:467:3622:59
7:24
-0:04
20K
12.43 mi12:27:461:37:137:4926:27
8:31
+1:07
Half
13.11 mi12:32:581:42:257:495:12
7:37
-0:54
25K
15.53 mi12:53:332:03:007:5520:35
8:29
+0:52
30K
18.64 mi13:22:052:31:328:0828:32
9:11
+0:42
20M
20.00 mi13:34:022:43:298:1011:57
8:48
-0:23
21M
21.00 mi13:42:322:51:598:118:30
8:30
-0:18
35K
21.75 mi13:48:322:57:598:116:00
8:01
-0:29
23M
23.00 mi13:58:343:08:018:1010:02
8:01
0:00
24M
24.00 mi14:05:553:15:228:087:21
7:21
-0:40
40K
24.85 mi14:12:203:21:478:076:25
7:30
+0:09
25.2M
25.20 mi14:15:083:24:358:072:48
8:07
+0:37
Finish
26.22 mi14:22:153:31:428:057:07
6:59
-1:08

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

6:59 /mi

Average Pace

8:05 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:12:17

34% of race

Time at Steady Pace

43:24

21% of race

Time at Slower Pace

1:36:01

45% of race

Average Pace: 8:04 /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 mi11:15:0724:347:5424:34
7:54
#15773
10K
6.21 mi11:38:2047:477:4123:13
7:28
#13848
15K
9.32 mi12:01:191:10:467:3622:59
7:24
#12806
20K
12.43 mi12:27:461:37:137:4926:27
8:31
#14435
Half
13.11 mi12:32:581:42:257:495:12
7:37
#14344
25K
15.53 mi12:53:332:03:007:5520:35
8:29
#14889
30K
18.64 mi13:22:052:31:328:0828:32
9:11
#15738
20M
20.00 mi13:34:022:43:298:1011:57
8:48
#15652
21M
21.00 mi13:42:322:51:598:118:30
8:30
#15328
35K
21.75 mi13:48:322:57:598:116:00
8:01
#15182
23M
23.00 mi13:58:343:08:018:1010:02
8:01
#14838
24M
24.00 mi14:05:553:15:228:087:21
7:21
#14481
40K
24.85 mi14:12:203:21:478:076:25
7:30
#14182
25.2M
25.20 mi14:15:083:24:358:072:48
8:07
#14037
Finish
26.22 mi14:22:153:31:428:057:07
6:59
#13671
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi157735002500210882(Top 38%)2320(Top 19%)2320(Top 42%)
10K6.21 mi3.10 mi13848+19253854+11483854+114811862(Top 42%)2745(Top 22%)2745(Top 50%)
15K9.32 mi3.11 mi12806+10423275+5793275+57910882(Top 38%)2320(Top 19%)2320(Top 42%)
20K12.43 mi3.11 mi14435-16294253-9784253-97818336(Top 65%)6524(Top 53%)6524(Top 119%)
Half13.11 mi0.68 mi14344+914205+484205+4812856(Top 45%)3435(Top 28%)3435(Top 63%)
25K15.53 mi2.42 mi14889-5454561-3564561-35617126(Top 60%)5923(Top 48%)5923(Top 108%)
30K18.64 mi3.11 mi15738-8495077-5165077-51618574(Top 65%)6871(Top 56%)6871(Top 126%)
20M20.00 mi1.36 mi15652+865067+105067+1015633(Top 55%)5377(Top 44%)5377(Top 98%)
21M21.00 mi1.00 mi15328+3244906+1614906+16110515(Top 37%)2874(Top 24%)2874(Top 53%)
35K21.75 mi0.75 mi15182+1464841+654841+6512325(Top 43%)3832(Top 31%)3832(Top 70%)
23M23.00 mi1.25 mi14838+3444674+1674674+16710174(Top 36%)2841(Top 23%)2841(Top 52%)
24M24.00 mi1.00 mi14481+3574502+1724502+1726772(Top 24%)1381(Top 11%)1381(Top 25%)
40K24.85 mi0.85 mi14182+2994380+1224380+1226883(Top 24%)1523(Top 12%)1523(Top 28%)
25.2M25.20 mi0.35 mi14037+1454306+744306+746721(Top 24%)1549(Top 13%)1549(Top 28%)
Finish26.22 mi1.02 mi13671+3664138+1684138+1685676(Top 20%)1142(Top 9%)1142(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10882

Females

2320

F18-39

2320

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11862

Females

2745

F18-39

2745

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10882

Females

2320

F18-39

2320

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

18336

Females

6524

F18-39

6524

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12856

Females

3435

F18-39

3435

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

17126

Females

5923

F18-39

5923

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

18574

Females

6871

F18-39

6871

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15633

Females

5377

F18-39

5377

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

10515

Females

2874

F18-39

2874

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12325

Females

3832

F18-39

3832

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10174

Females

2841

F18-39

2841

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6772

Females

1381

F18-39

1381

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6883

Females

1523

F18-39

1523

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6721

Females

1549

F18-39

1549

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5676

Females

1142

F18-39

1142

Passing Analysis

Category:
Athletes Passed
5411
Passed By
3309
Net Change
+2102
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15773
5K → 10K193510+1925#15773#13848
10K → 15K10464+1042#13848#12806
15K → 20K251654-1629#12806#14435
20K → Half965+91#14435#14344
Half → 25K67612-545#14344#14889
25K → 30K76925-849#14889#15738
30K → 20M16781+86#15738#15652
20M → 21M3306+324#15652#15328
21M → 35K1559+146#15328#15182
35K → 23M3473+344#15182#14838
23M → 24M3570+357#14838#14481
24M → 40K2990+299#14481#14182
40K → 25.2M1450+145#14182#14037
25.2M → Finish3660+366#14037#13671
TOTALS54113309+2102
📊

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