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SF MARATHON 1ST HALF 2026

Byron Leiva Contreras

Bib: 20222•M•Age: 40

Richmond, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 6575
Top 43%
Gender (Male)
#0 / 3619
Masters (Masters Men)
#0 / 1030
Top 43%
Division (M40-44)
#0 / 319
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
9:46/mi
19:32
→ flat
4M
9:43/mi
38:58
↑ 67↓ 69
6M
9:57/mi
58:52
↑ 1231.1%
8M
9:44/mi
1:18:19
↑ 166↓ 531.1%
9.6M
9:44/mi
1:33:53
↑ 68↓ 1931.5%
10M
18:54/mi
1:41:26
↓ 241.1%
10.5M
5:08/mi
1:44:00
↓ 732.7%
12M
15:03/mi
2:06:35
↑ 2803.2%
Finish· 13.11 mi
11:04/mi
2:18:51
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time58:52
Pace9:49 /mi
2nd Half
Distance7.11 mi
Time1:19:59
Pace11:15 /mi
📊Positive Split: 35.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:10:0019:329:4619:32
9:46
-
4M
4.00 mi07:29:2638:589:4519:26
9:43
-0:03
6M
6.00 mi07:49:2058:529:4919:54
9:57
+0:14
8M
8.00 mi08:08:471:18:199:4719:27
9:44
-0:13
9.6M
9.60 mi08:24:211:33:539:4715:34
9:44
0:00
10M
10.00 mi08:31:541:41:2610:097:33
18:54
+9:10
10.5M
10.50 mi08:34:281:44:009:542:34
5:08
-13:46
12M
12.00 mi08:57:032:06:3510:3322:35
15:03
+9:55
Finish
13.11 mi09:09:192:18:5110:3612:16
11:04
-3:59

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

5:08 /mi

Average Pace

10:36 /mi

Slowest Pace

18:54 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34

2% of race

Time at Steady Pace

1:46:09

76% of race

Time at Slower Pace

30:08

22% of race

Average Pace: 10:35 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi07:10:0019:329:4619:32
9:46
#2673
4M
4.00 mi07:29:2638:589:4519:26
9:43
#2490
6M
6.00 mi07:49:2058:529:4919:54
9:57
#2498
8M
8.00 mi08:08:471:18:199:4719:27
9:44
#2343
9.6M
9.60 mi08:24:211:33:539:4715:34
9:44
#2525
10M
10.00 mi08:31:541:41:2610:097:33
18:54
#2540
10.5M
10.50 mi08:34:281:44:009:542:34
5:08
#2550
12M
12.00 mi08:57:032:06:3510:3322:35
15:03
#2719
Finish
13.11 mi09:09:192:18:5110:3612:16
11:04
#2832
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 45%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

10:07

Segment Time

11:15/mi

Pace

0.90 mi

Distance

Overall

2945

Men

1968

Division

164

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
2M2.00 mi2.00 mi267318681573589(Top 55%)2260(Top 62%)186(Top 58%)
4M4.00 mi2.00 mi2490+1831759+109149+82415(Top 37%)1715(Top 47%)144(Top 45%)
6M6.00 mi2.00 mi2498-81767-8146+32602(Top 40%)1826(Top 50%)145(Top 45%)
8M8.00 mi2.00 mi2343+1551699+68138+82043(Top 31%)1521(Top 42%)128(Top 40%)
9.6M9.60 mi1.60 mi2525-1821774-75144-63643(Top 55%)2226(Top 62%)183(Top 57%)
10M10.00 mi0.40 mi2540-151781-71442912(Top 44%)1946(Top 54%)162(Top 51%)
10.5M10.50 mi0.50 mi2550-101784-31443479(Top 53%)2268(Top 63%)188(Top 59%)
12M12.00 mi1.50 mi2719-1691877-93153-93589(Top 55%)2260(Top 62%)186(Top 58%)
Finish13.11 mi1.11 mi2832-1131938-61163-104079(Top 62%)2522(Top 70%)207(Top 65%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 55%
~flat
+5ft-3ft

Overall

3589

Males

2260

M40-44

186

2M→4M

2.0 - 4.0 mi

Top 37%
×4story building
+67ft-69ft

Overall

2415

Males

1715

M40-44

144

4M→6M

4.0 - 6.0 mi

Top 40%
×9story building
+123ft-9ft

Overall

2602

Males

1826

M40-44

145

6M→8M

6.0 - 8.0 mi

Top 31%
×12story building
+166ft-53ft

Overall

2043

Males

1521

M40-44

128

8M→9.6M

8.0 - 9.6 mi

Top 55%
×13story building
+68ft-193ft

Overall

3643

Males

2226

M40-44

183

9.6M→10M

9.6 - 10.0 mi

Top 44%
×2story building
+0ft-24ft

Overall

2912

Males

1946

M40-44

162

10M→10.5M

10.0 - 10.5 mi

Top 53%
×6story building
+1ft-73ft

Overall

3479

Males

2268

M40-44

188

10.5M→12M

10.5 - 12.0 mi

Top 55%
×21story building
+280ft-26ft

Overall

3589

Males

2260

M40-44

186

12M→Finish

12.0 - 13.1 mi

Top 62%
×7story building
+14ft-89ft

Overall

4079

Males

2522

M40-44

207

Passing Analysis

Category:
Athletes Passed
629*
Passed By
788
Net Change
-159
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#2673
2M → 4M23451+183#2673#2490
4M → 6M8391-8#2490#2498
6M → 8M202*47+155#2498#2343
8M → 9.6M33215-182#2343#2525
9.6M → 10M2439-15#2525#2540
10M → 10.5M616-10#2540#2550
10.5M → 12M23192-169#2550#2719
12M → Finish24*137-113#2719#2832
TOTALS629*788-159

* 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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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events