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BOSTON MARATHON 2025

Emily Byrd

Bib: 9822•F

MN

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 28%
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
7:05/mi
22:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:00/mi
43:46
↑ 79↓ 1380.4%
15K· 9.32 mi
7:02/mi
1:05:37
↑ 67↓ 78
20K· 12.43 mi
7:14/mi
1:28:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:33:02
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:51:05
↑ 66↓ 880.2%
30K· 18.64 mi
7:47/mi
2:15:16
↑ 181↓ 1480.2%
20M
8:06/mi
2:26:17
↑ 64↓ 500.2%
21M
8:38/mi
2:34:55
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
2:41:09
↑ 17↓ 861.7%
23M
8:29/mi
2:51:46
↑ 23↓ 630.6%
24M
8:08/mi
2:59:54
↓ 821.3%
40K· 24.85 mi
8:02/mi
3:06:46
↓ 200.3%
25.2M
8:33/mi
3:09:43
↑ 13↓ 160.2%
Finish· 26.22 mi
7:32/mi
3:17:24
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:02
Pace7:06 /mi
2nd Half
Distance13.11 mi
Time1:44:22
Pace7:58 /mi
📊Positive Split: 12.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1022:007:0522:00
7:05
-
10K
6.21 mi11:09:5643:467:0321:46
7:00
-0:05
15K
9.32 mi11:31:471:05:377:0221:51
7:02
+0:02
20K
12.43 mi11:54:141:28:047:0522:27
7:14
+0:12
Half
13.11 mi11:59:121:33:027:064:58
7:17
+0:03
25K
15.53 mi12:17:151:51:057:0918:03
7:27
+0:10
30K
18.64 mi12:41:262:15:167:1524:11
7:47
+0:20
20M
20.00 mi12:52:272:26:177:1911:01
8:06
+0:19
21M
21.00 mi13:01:052:34:557:238:38
8:38
+0:32
35K
21.75 mi13:07:192:41:097:256:14
8:20
-0:18
23M
23.00 mi13:17:562:51:467:2810:37
8:29
+0:09
24M
24.00 mi13:26:042:59:547:308:08
8:08
-0:21
40K
24.85 mi13:32:563:06:467:316:52
8:02
-0:06
25.2M
25.20 mi13:35:533:09:437:322:57
8:33
+0:31
Finish
26.22 mi13:43:343:17:247:327:41
7:32
-1:01

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

7:00 /mi

Average Pace

7:32 /mi

Slowest Pace

8:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:05

56% of race

Time at Steady Pace

38:44

20% of race

Time at Slower Pace

47:35

24% of race

Average Pace: 7:32 /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 mi10:48:1022:007:0522:00
7:05
#8494
10K
6.21 mi11:09:5643:467:0321:46
7:00
#8213
15K
9.32 mi11:31:471:05:377:0221:51
7:02
#8044
20K
12.43 mi11:54:141:28:047:0522:27
7:14
#8076
Half
13.11 mi11:59:121:33:027:064:58
7:17
#8148
25K
15.53 mi12:17:151:51:057:0918:03
7:27
#8301
30K
18.64 mi12:41:262:15:167:1524:11
7:47
#8484
20M
20.00 mi12:52:272:26:177:1911:01
8:06
#8652
21M
21.00 mi13:01:052:34:557:238:38
8:38
#8779
35K
21.75 mi13:07:192:41:097:256:14
8:20
#9008
23M
23.00 mi13:17:562:51:467:2810:37
8:29
#9219
24M
24.00 mi13:26:042:59:547:308:08
8:08
#9341
40K
24.85 mi13:32:563:06:467:316:52
8:02
#9369
25.2M
25.20 mi13:35:533:09:437:322:57
8:33
#9343
Finish
26.22 mi13:43:343:17:247:327:41
7:32
#9332
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8494116411647850(Top 28%)988(Top 8%)988(Top 18%)
10K6.21 mi3.10 mi8213+2811072+921072+927977(Top 28%)1002(Top 8%)1002(Top 18%)
15K9.32 mi3.11 mi8044+1691018+541018+547850(Top 28%)988(Top 8%)988(Top 18%)
20K12.43 mi3.11 mi8076-321051-331051-338442(Top 30%)1295(Top 11%)1295(Top 24%)
Half13.11 mi0.68 mi8148-721091-401091-409893(Top 35%)1909(Top 16%)1909(Top 35%)
25K15.53 mi2.42 mi8301-1531166-751166-759518(Top 34%)1885(Top 15%)1885(Top 34%)
30K18.64 mi3.11 mi8484-1831293-1271293-1279818(Top 35%)2199(Top 18%)2199(Top 40%)
20M20.00 mi1.36 mi8652-1681401-1081401-10811168(Top 39%)3016(Top 25%)3016(Top 55%)
21M21.00 mi1.00 mi8779-1271477-761477-7611294(Top 40%)3236(Top 26%)3236(Top 59%)
35K21.75 mi0.75 mi9008-2291599-1221599-12214478(Top 51%)4932(Top 40%)4932(Top 90%)
23M23.00 mi1.25 mi9219-2111739-1401739-14013180(Top 46%)4357(Top 36%)4357(Top 80%)
24M24.00 mi1.00 mi9341-1221821-821821-8212148(Top 43%)3864(Top 32%)3864(Top 71%)
40K24.85 mi0.85 mi9369-281871-501871-5010431(Top 37%)3131(Top 26%)3131(Top 57%)
25.2M25.20 mi0.35 mi9343+261882-111882-119147(Top 32%)2584(Top 21%)2584(Top 47%)
Finish26.22 mi1.02 mi9332+111912-301912-309504(Top 33%)2759(Top 23%)2759(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7850

Females

988

F18-39

988

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

7977

Females

1002

F18-39

1002

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7850

Females

988

F18-39

988

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8442

Females

1295

F18-39

1295

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9893

Females

1909

F18-39

1909

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9518

Females

1885

F18-39

1885

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9818

Females

2199

F18-39

2199

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11168

Females

3016

F18-39

3016

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

11294

Females

3236

F18-39

3236

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

14478

Females

4932

F18-39

4932

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13180

Females

4357

F18-39

4357

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

12148

Females

3864

F18-39

3864

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10431

Females

3131

F18-39

3131

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9147

Females

2584

F18-39

2584

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9504

Females

2759

F18-39

2759

Passing Analysis

Category:
Athletes Passed
1448
Passed By
2286
Net Change
-838
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8494
5K → 10K395114+281#8494#8213
10K → 15K22960+169#8213#8044
15K → 20K136168-32#8044#8076
20K → Half1183-72#8076#8148
Half → 25K78231-153#8148#8301
25K → 30K153336-183#8301#8484
30K → 20M59227-168#8484#8652
20M → 21M62189-127#8652#8779
21M → 35K21250-229#8779#9008
35K → 23M61272-211#9008#9219
23M → 24M51173-122#9219#9341
24M → 40K6391-28#9341#9369
40K → 25.2M5428+26#9369#9343
25.2M → Finish7564+11#9343#9332
TOTALS14482286-838
📊

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