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BOSTON MARATHON 2025

Brittany Saia

Bib: 12218•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 29%
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
7:25/mi
23:02
↑ 97↓ 3451.5%
10K· 6.21 mi
7:27/mi
46:11
↑ 79↓ 1380.4%
15K· 9.32 mi
7:24/mi
1:09:11
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:32:19
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:37:22
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:55:27
↑ 66↓ 880.2%
30K· 18.64 mi
7:34/mi
2:18:59
↑ 181↓ 1480.2%
20M
7:42/mi
2:29:27
↑ 64↓ 500.2%
21M
8:01/mi
2:37:28
↑ 106↓ 241.6%
35K· 21.75 mi
7:34/mi
2:43:08
↑ 17↓ 861.7%
23M
7:44/mi
2:52:49
↑ 23↓ 630.6%
24M
7:44/mi
3:00:33
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:07:16
↓ 200.3%
25.2M
8:48/mi
3:10:18
↑ 13↓ 160.2%
Finish· 26.22 mi
7:31/mi
3:17:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:22
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:40:36
Pace7:40 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0523:027:2523:02
7:25
-
10K
6.21 mi11:14:1446:117:2623:09
7:27
+0:02
15K
9.32 mi11:37:141:09:117:2523:00
7:24
-0:03
20K
12.43 mi12:00:221:32:197:2623:08
7:27
+0:03
Half
13.11 mi12:05:251:37:227:265:03
7:24
-0:03
25K
15.53 mi12:23:301:55:277:2618:05
7:27
+0:03
30K
18.64 mi12:47:022:18:597:2723:32
7:34
+0:07
20M
20.00 mi12:57:302:29:277:2810:28
7:42
+0:08
21M
21.00 mi13:05:312:37:287:308:01
8:01
+0:19
35K
21.75 mi13:11:112:43:087:305:40
7:34
-0:27
23M
23.00 mi13:20:522:52:497:319:41
7:44
+0:10
24M
24.00 mi13:28:363:00:337:317:44
7:44
0:00
40K
24.85 mi13:35:193:07:167:326:43
7:51
+0:07
25.2M
25.20 mi13:38:213:10:187:333:02
8:48
+0:57
Finish
26.22 mi13:46:013:17:587:337:40
7:31
-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

7:24 /mi

Average Pace

7:33 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:56

98% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

3:02

2% of race

Average Pace: 7:33 /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 mi10:51:0523:027:2523:02
7:25
#11477
10K
6.21 mi11:14:1446:117:2623:09
7:27
#11555
15K
9.32 mi11:37:141:09:117:2523:00
7:24
#11274
20K
12.43 mi12:00:221:32:197:2623:08
7:27
#11003
Half
13.11 mi12:05:251:37:227:265:03
7:24
#10996
25K
15.53 mi12:23:301:55:277:2618:05
7:27
#10708
30K
18.64 mi12:47:022:18:597:2723:32
7:34
#10204
20M
20.00 mi12:57:302:29:277:2810:28
7:42
#9980
21M
21.00 mi13:05:312:37:287:308:01
8:01
#9787
35K
21.75 mi13:11:112:43:087:305:40
7:34
#9735
23M
23.00 mi13:20:522:52:497:319:41
7:44
#9619
24M
24.00 mi13:28:363:00:337:317:44
7:44
#9588
40K
24.85 mi13:35:193:07:167:326:43
7:51
#9532
25.2M
25.20 mi13:38:213:10:187:333:02
8:48
#9535
Finish
26.22 mi13:46:013:17:587:337:40
7:31
#9505
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi114772517251710919(Top 38%)2328(Top 19%)2328(Top 43%)
10K6.21 mi3.10 mi11555-782582-652582-6511651(Top 41%)2638(Top 22%)2638(Top 48%)
15K9.32 mi3.11 mi11274+2812460+1222460+12210919(Top 38%)2328(Top 19%)2328(Top 43%)
20K12.43 mi3.11 mi11003+2712339+1212339+12110315(Top 36%)2107(Top 17%)2107(Top 39%)
Half13.11 mi0.68 mi10996+72336+32336+310935(Top 38%)2377(Top 19%)2377(Top 43%)
25K15.53 mi2.42 mi10708+2882236+1002236+1009630(Top 34%)1943(Top 16%)1943(Top 36%)
30K18.64 mi3.11 mi10204+5042061+1752061+1758275(Top 29%)1503(Top 12%)1503(Top 27%)
20M20.00 mi1.36 mi9980+2241977+841977+848386(Top 30%)1707(Top 14%)1707(Top 31%)
21M21.00 mi1.00 mi9787+1931922+551922+557466(Top 26%)1500(Top 12%)1500(Top 27%)
35K21.75 mi0.75 mi9735+52192219229189(Top 32%)2211(Top 18%)2211(Top 40%)
23M23.00 mi1.25 mi9619+1161915+71915+78130(Top 29%)1876(Top 15%)1876(Top 34%)
24M24.00 mi1.00 mi9588+311942-271942-279356(Top 33%)2489(Top 20%)2489(Top 46%)
40K24.85 mi0.85 mi9532+561949-71949-79201(Top 32%)2545(Top 21%)2545(Top 47%)
25.2M25.20 mi0.35 mi9535-31967-181967-1810639(Top 37%)3295(Top 27%)3295(Top 60%)
Finish26.22 mi1.02 mi9505+301999-321999-329376(Top 33%)2704(Top 22%)2704(Top 49%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10919

Females

2328

F18-39

2328

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11651

Females

2638

F18-39

2638

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10919

Females

2328

F18-39

2328

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

10315

Females

2107

F18-39

2107

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10935

Females

2377

F18-39

2377

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9630

Females

1943

F18-39

1943

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

8275

Females

1503

F18-39

1503

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8386

Females

1707

F18-39

1707

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

7466

Females

1500

F18-39

1500

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

9189

Females

2211

F18-39

2211

35K→23M

21.8 - 23.0 mi

Top 29%
×5story building
+23ft-63ft

Overall

8130

Females

1876

F18-39

1876

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

9356

Females

2489

F18-39

2489

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9201

Females

2545

F18-39

2545

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10639

Females

3295

F18-39

3295

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9376

Females

2704

F18-39

2704

Passing Analysis

Category:
Athletes Passed
2780*
Passed By
808
Net Change
+1972
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11477
5K → 10K209287-78#11477#11555
10K → 15K33958+281#11555#11274
15K → 20K31847+271#11274#11003
20K → Half3629+7#11003#10996
Half → 25K32739+288#10996#10708
25K → 30K52016+504#10708#10204
30K → 20M245*21+224#10204#9980
20M → 21M21421+193#9980#9787
21M → 35K8533+52#9787#9735
35K → 23M16650+116#9735#9619
23M → 24M10473+31#9619#9588
24M → 40K9640+56#9588#9532
40K → 25.2M3235-3#9532#9535
25.2M → Finish8959+30#9535#9505
TOTALS2780*808+1972

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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